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Operator
Good day, and welcome to the Chubb Limited Third Quarter 2017 Earnings Conference Call. Today's call is being recorded. (Operator Instructions) For opening remarks and introductions, I would like to turn the call over to Helen Wilson, Investor Relations. Please go ahead.
Helen Wilson - SVP of IR
Thank you, and welcome to our September 30, 2017, third quarter earnings conference call.
Our report today will contain forward-looking statements, including statements relating to company performance, pricing and business mix, economic and market conditions and integration of our Chubb Corporation acquisition and potential synergies and expense savings. These are subject to risks and uncertainties and actual results may differ materially. See our most recent SEC filings and earnings press release and financial supplements, which are available on our website at investors.chubb.com for more information on factors that could affect these matters.
We will also refer today to non-GAAP financial measures. Reconciliations of these non-GAAP financial measures to the most direct comparable GAAP measures and related information are provided in our earnings press release and financial supplement at investors.chubb.com. In particular, references to 2016 underwriting results will be on an as-if basis, which includes the Chubb Corporation's results for the first 14 days of 2016 and excludes the impact of purchase accounting adjustments relating to the merger.
Now I'd like to introduce our speakers. First, we have Evan Greenberg, Chairman and Chief Executive Officer; followed by Phil Bancroft, our Chief Financial Officer. Then we'll take your questions. Also with us to assist with your questions are several members of our management team.
And now it's my pleasure to turn the call over to Evan.
Evan G. Greenberg - Chairman & CEO
Good morning. It was a difficult quarter for the insurance industry and Chubb, a quarter dominated by catastrophe losses. But frankly, it's a part of the business we're in. The headlines were, obviously, the series of large natural cats, specifically Harvey, Irma and Maria, as well as the Mexican earthquakes. While no one has certainty at the moment, the third quarter events will likely cost the industry in the range of $80 billion to $100 billion plus anyway.
For Chubb, our after-tax net cat losses estimate of $1.5 billion cost us about 1 quarter of earnings or about 3.5% of our September 30 tangible capital. In the aggregate, this was within our risk tolerance, and the amount of loss we would expect from these types of events. We view the loss for these events as between a 1 in 5-year and 1 in 10-year industry and Chubb event on a worldwide aggregate basis. This gives you a sense of how we think about risk, including basis risk in the models and significant amount of non-modeled loss that is included primarily from Harvey and likely, Maria and Irma. By the way, '17 is on track to join '05 and '11 as the third $100 billion plus year for insured cat losses in the last 12.
The events of the third quarter for Chubb were first and foremost about service and responding to our customers in their time of need. Let's remember, that's what insurance is all about and that's why we exist. Our claims organization is large, experienced and so capable and with a mindset to serve. They performed admirably and at times, heroically, often sacrificing their own personal well-being in the impacted areas of Texas, Florida, Puerto Rico and Mexico to come to the aid of our customers and distribution partners and fellow employees. In a spate of about 6 weeks, they responded to nearly 17,000 claims in 5 different major events. Service levels remained consistently high with over 95% of the 52,000 customer calls in North America answered in less than 5 seconds, and by a human being from our company, not a machine or third-party. As of today, over 90% of Harvey and Irma claims have been physically inspected.
I should add, our loss prevention and claims organization continue to perform at the highest levels and distinguish our company, as they respond to both our Personal Lines and commercial lines customers impacted by the California wildfires, which as you know, remain an active cat.
On the prevention side, our special Wildfire Defense Services teams have so far visited over 250 homeowners and taken active measures to protect more than half of them. By the way, when it comes to wildfire prevention services for high net worth customers, there are a few pretenders touting capability, but with little exception, no one holds a candle to our vast network of capability.
Looking beyond this quarter's catastrophe losses and the shadow it casts, there is an important story to tell about our company. Our underlying health is excellent. Excluding the cats, operating income was about $1.5 billion or $3.12 per share. Our published combined ratio was 111% because of the cats. Excluding them was 84.7%. And on a current accident year basis excluding cats, the combined ratio was 88.5%, compared with 88.9% last year, with the loss ratio up over 1 point and the expense ratio down 1.7%. While the expense ratio last year included an adverse impact of about 0.5 percentage point from purchase accounting, and the 1.25-point improvement illustrates our merger-related efficiency efforts.
Net investment income for the quarter was a record $893 million, up nearly 8% over prior year and a very strong result, which included a onetime item Phil will speak more about.
In the quarter, per-share book value grew 0.5% while per-share tangible was essentially flat. Book and tangible are up nearly 5% and 7.5%, respectively so far for the year. Phil will have more to say about investment income, book value, the cats and prior period development.
Given the inadequacy of pricing and terms in a number of important classes around the globe and the consequent anemic industry results, along with the magnitude of year-to-date cat losses, we should be at the beginning of a firming market, and I believe we are. How extensive and broad the firming remains to be seen, and the timing will vary by geography and type of business, but pricing should and will move. While conditions vary depending on territory, line of business and size of risk, pricing overall today is too cheap, and we should strive for price adequacy. Chubb is a leader, and we recognize our responsibility to insist on receiving an adequate rate for the coverage we provide. This includes educating our customers and distribution partners about the reason and need to move pricing to adequacy where it is not, so that we earn a reasonable risk-adjusted return and avoid more volatile price moves in the future if prices continue to stagnate or erode.
Following years of rate decreases, property needs rate to return to adequacy. Property rates have 2 components: the catastrophe and attritional loss elements. Property cat risks should be priced to model, and today it is priced at a substantial discount to model in many instances. The attritional loss component of property is also, in many cases, inadequately priced and should return to adequacy. By the way, even though it is inadequately priced, property cat premiums have been used by many to subsidize inadequate pricing and other classes during the recent years of lighter cat losses, a pretty dumb strategy.
As I have said in the past, many classes of D&O and employment practices liability are not adequately priced. Loss frequency and severity have been increasing. Combined ratios have reached a point in certain classes that are simply unacceptable.
Many primary and excess casualty-related classes, including U.S. commercial auto need rate. Loss cost trend while more benign in recent years has nonetheless continued while rates have moved down. Chubb's risk appetite has not changed. We have an exceptionally strong balance sheet and we're willing to deploy it where we can achieve an adequate underwriting margin.
Before the third quarter's cat events and during the third quarter, like the second, we were beginning to see signs of a bit more stable pricing environment for the business we wrote. Remember though we pay a penalty in terms of new business to achieve this result. We began to achieve rate in a few areas while rates were essentially flat or the rate of decline slowed in others. For example, in U.S. publicly traded D&O, rates went flat in the second quarter and were, in fact, up 2% in the third.
Rate movement for the business we wrote in the quarter varied by territory and market segment. In our U.S. middle market and U.S. major accounts in specialty businesses, renewal pricing in aggregate was up about 1.5%, with exposure change an additional positive 1%. By major class of business, pricing for our risk management business is up 1.5%.
General and Specialty Casualty-related pricing was up about 4%. Financial Lines pricing was flat with management liability up 2% and property-related pricing was down about 2.5%.
In our international retail commercial P&C business, pricing for general and Specialty Casualty, Financial Lines and property-related rates were all down 2%. For our London wholesale business, property rates were up 1%, and marine down 2% and Financial Lines flat.
Now with that as context, let me give you some color on our revenue results for the quarter, which was stronger on both a published basis and when adjusted for merger noise. Continuing the trend from prior quarter, this was our best quarter since the merger in terms of growth and reflects a careful balance between leveraging the power, broad capabilities of the organization and underwriting discipline where we will trade market share for an underwriting profit.
For the quarter, P&C net premiums written globally were up over 4.5% in constant dollars. Adjusted for merger-related underwriting action, they were up 4%. As a reminder, the impact from these merger-related items will continue to ameliorate as we move forward.
In our North America commercial P&C business, net premiums were down about 0.5%. Normalizing for merger-related actions, they were up 1%. The renewal retention rate for our North America commercial P&C business was steady at 92%, with major account and specialty at 94% and middle market at 88%.
Overall new business writings for North America commercial were up about 1.5% over third quarter '16, with new business growth coming from major accounts, middle market, small commercial and Bermuda wholesale.
In our North America Personal Lines business, net premiums written were up 18%. Excluding the 13-point impact of a one-time unearned premium transfer that reduced premiums written in the prior year, growth was about 5%. Rates were up about 2% and exposure change added 3%. Retention remains very strong at 95%.
Turning to Overseas General. Net premiums written for international retail P&C were up over 2% in the quarter in constant dollar and nearly 4% excluding merger-related actions. Latin America led the way with growth of 12% while the U.K./Ireland had a good quarter with growth of 4%.
Our Asia-focused international life insurance business had a very strong quarter with net premiums written and deposits up 28% bringing their year-to-date growth to 18%. John Keogh, John Lupica, Paul Krump and Juan Andrade can provide further color on the quarter, including current market conditions and pricing trends.
We are in good shape with the remainder of our integration activities. Operationally and financially, all areas of integration are on track or ahead of schedule.
Lastly, we're continuing to plant seeds to capitalize on future growth opportunities around the globe. You saw, for example, our recent announcement of a 15-year exclusive distribution agreement with one of Asia's most respected banks, Singapore-based DBS. At the heart of our venture is our joint ability to market and service insurance digitally to DBS customers, both consumer and business.
In sum, the company is in great shape, and we are optimistic about the future. While it was a tough quarter for cats, again, it's the business we are in. We should be at the beginning of a firming market, and we intend to help lead in that direction. Our company is in great shape from the perspectives of risk management, growth opportunity and financial efficiency. We are investing aggressively in our future while delivering results to shareholders today.
With that, I'll turn the call over to Phil, and then we'll come back and take your questions.
Philip V. Bancroft - CFO, Executive VP
Thank you, Evan. Due to the unusually high level of catastrophe losses in the quarter, we sustained an operating loss of $60 million or $0.13 per share. Catastrophe losses totaled over $1.5 billion after-tax or $3.27 per share net of reinsurance and reinstatement premiums.
Our underlying results were strong with current accident year underwriting income, excluding catastrophes, a record $839 million, up over 5.5% from the prior year.
Our balance sheet remains strong, and we maintained necessary liquidity to support our business around the globe with total capital exceeding $63 billion.
Among the capital-related actions in the quarter, we returned $563 million to shareholders, including $331 million in dividends and $232 million in share repurchases. Year-to-date through September 30, our share repurchases have totaled $707 million and our program for the year remains open. Operating cash flow for the quarter was a record $1.8 billion.
As Evan mentioned, book value and tangible book value per share were up 0.5% and down 0.3%, respectively. Our operating loss and capital-related actions in the quarter were offset by positive portfolio returns and favorable currency movements.
Our invested assets grew by $2.2 billion or over 2% for the quarter, reflecting the favorable impact of foreign currency and positive cash flows.
Investment income of $893 million was a record and higher than expected due to a $44 million distribution from a co-investment by Chubb with one of the company's private equity fund partners. We now expect our quarterly run rate to be in the range of $845 million to $855 million.
Net realized and unrealized gains for the quarter were $829 million pretax, and included a $680 million gain from FX and a $223 million gain from the investment portfolio, driven by a slight decline in yields and a positive return on our private equity portfolio.
Our pretax catastrophe losses in the quarter, principally from Hurricanes Harvey, Irma and Maria, were $3 billion gross and $1.9 billion net of reinsurance and reinstatement premiums. This compares to an expected net catastrophe loss for the third quarter of $330 million pretax.
Additional information on catastrophe losses is detailed in our financial supplement. Net loss reserves increased over $2.3 billion for the quarter. After adjusting for cat losses, our loss reserves increased $660 million. The paid-to-incurred ratio in the quarter was 69%. Adjusting for cat losses and prior period development, the ratio was 87%.
We had positive prior period development in the quarter of $270 million pretax or $206 million after-tax. This included $77 million pretax of adverse development for our legacy environmental liability exposure versus $52 million in 2016. The remaining favorable development of $347 million was principally in long-tail lines related to accident years 2012 and prior.
Overall, our favorable prior period development is down compared to last year by $79 million pretax. This is primarily due to the higher environmental charge in 2017, and the fact that 2016 included the release of an individual legacy liability case reserve of $25 million.
In the fourth quarter, we expect our combined ratio to be favorably impacted by incremental benefits from integration savings at a level similar to the third quarter. By year-end 2017, we will have achieved our full annualized run rate integration-related savings in accordance with the disclosed target of $875 million. As we move through 2018, the relative impact on our combined ratio will dissipate.
Merger-related underwriting actions were $87 million in the quarter. We expect this to increase modestly in the fourth quarter because it includes the impact of the accounting policy alignment we discussed on this year's first quarter conference call. The merger-related impact on premiums will decrease substantially beginning in the first quarter of 2018.
The operating income tax rate for the quarter was impacted by the high level of catastrophe losses. Excluding catastrophe losses, in excess of our expectation, the effective tax rate in the quarter was 16.5%. We continued to expect our annual effective tax rate excluding the impact of the excess third quarter catastrophes to remain within the 16% to 18% range for the year. I'll turn it back to Helen.
Helen Wilson - SVP of IR
Thank you. At this point, we'll be happy to take your questions.
Operator
(Operator Instructions) We'll take our first question from Kai Pan with Morgan Stanley.
Kai Pan - Executive Director
Evan, on the pricing outlook, some argue that industry still has plenty of excess capital and it's a very fragment marketplace. So what gives you comfort that this is the beginning of a firming market and potential price increase will be sustainable?
Evan G. Greenberg - Chairman & CEO
Well, Kai, it's one thing for there to be plenty of capital, and I agree that there is. It's another thing to receive a reasonable return on that capital. And when I -- when you look at industry results, in aggregate, many in the industry are not even achieving cost of capital, let alone, a reasonable risk-adjusted return. Combined ratios are under pressure. You take out cat premiums that subsidize -- that mask the underlying health, you've got rate going in one direction, trend going in the other. And so in my judgment, it has reached a point where, the industry, there is enough pressure that I think among all the responsible companies, there is a recognition of that need. And you'd like the market to be -- to behave market-to-market and hardly they behave always rationally. But if we were to suppose a rational and responsible industry, you'd like to not have volatility in terms of pricing and in terms to customers. You'd like it to behave in a more orderly way. And I believe all that bodes towards that direction. The other thing I'd tell you is losses were concentrated. These events weren't just evenly spread. They were concentrated in a number of important places. And those are the -- the plumbing -- the financial plumbing for insurance is global and it is connected. And I think the loss disproportionately hit some of those centers. London, as an example, drives a behavior that has an impact on many other markets at the same time. So while there's no guarantees, that's my point of view.
Kai Pan - Executive Director
Okay, that's great. And my second question, on your, like, revenue growth you said. The underlying premium growth you said is best since merger. And could you quantify so how much of that is attributable to the revenue opportunities you discussed in the merger? And would a hardening market accelerate the realization of the revenue opportunities?
Evan G. Greenberg - Chairman & CEO
Well, look, I can't put a -- I'm not -- dollar or a coin estimate on that. The fact is, when you look at the parts and pieces of this organization combined and the complementary nature of the strengths of what we now have, that is 1 organization, so I'm hardly going to talk about it 2 years on in some artificial way of 2 organizations, it's all one. And the complementary strengths and capabilities are simply compelling from a market point of view for customers, whether it is from small commercial to middle market to large commercial, and whether it is in the United States or it is overseas or it is for a global customer, no one has the total capability that this organization has in terms of product and service and reputation for delivering, and we are capitalizing on that. And the fact is we're underwriters and we're disciplined in underwriting. We will trade growth for underwriting discipline. And the more the market rationalizes to a reasonable risk-adjusted price for the risk they take, the more opportunity that will create for Chubb. Thank you for the question.
Operator
And we'll go next to Elyse Greenspan with Wells Fargo.
Elyse Beth Greenspan - VP and Senior Analyst
Just following up a little bit, on the market outlook as well. You have insinuated there being about $100 billion of losses this quarter. Now when we look at the disclosures that we see to date, obviously, there is a decent size delta between the losses that are out there and that $100 billion figure. Do we need to see a $100 billion, meaning if the losses come in lower, will the potential and the start of what you said is a firming market not be there? I mean, how do you view the need to see about $100 billion of losses?
Evan G. Greenberg - Chairman & CEO
Look, I think that's thinking of it a little too simplistically. You're just putting a point estimate. So if it's $99 billion, Elyse, what do you think? $101 billion, what do you think? -- excuse me, we're talking circa in the range of. And what you always see in large cats, if you look back through experience, and let's take Katrina as an example. What was the initial reported loss by insurers, and what did Katrina ultimately develop to? I recall somewhere in the $30 billion range that ultimately became $42 billion to $45 billion. I think that's what you're seeing here, and I think you're going to continue to see creep. And it happens over a period of time.
Elyse Beth Greenspan - VP and Senior Analyst
Okay, that's great. And more matches because there's estimates out there now that you can ballpark at to, maybe $50 billion. I wasn't talking about $1 billion, but in terms of pricing just when you think...
Evan G. Greenberg - Chairman & CEO
Well, you pick your number, I'll pick mine. So that's okay.
Elyse Beth Greenspan - VP and Senior Analyst
And then when you're talking about pricing in this firmer market, how are you thinking about price specific to really property and then certain pricing levels that you think are needed for Chubb to get a lot more aggressive? I mean, how has the dialogue been with your clients following on these events in and around the potential to push for more price?
Evan G. Greenberg - Chairman & CEO
Elyse, the -- it is very early days when you think about the rhythm of how things move and how the business actually works. So in October, you're really quoting late November and December business. In September, your business for October was already done. So there is a lag and it takes time and that is just building now. The rate increase, I was very clear in my commentary. It varies by customer in the way Chubb will approach this. It doesn't -- it's not some blunt instrument, here is how much it needs to move. Some customers, it needs to be flat. Some customers need to go up 30% because what's the adequacy? Where are you priced to model on cat and where are you priced for attritional loss? And that both need to be adequate. And overall for the industry, if you're large account shared and layered, you're talking double digit and it has to be. If you talk in middle market commercial, well, the pricing is going to vary depending on the class and where you are located in the United States or where you're located overseas. We're underwriters, and so we price to the exposure.
Elyse Beth Greenspan - VP and Senior Analyst
Okay, that's helpful. And then one last for Phil on the tax side. You said 16% to 18%. That's a Q4 and a full year figure?
Philip V. Bancroft - CFO, Executive VP
I would say, in general, on a quarterly run rate basis, yes, we would expect to run 16% to 18%. Now if you're talking about this year, as I said, that 16% to 18% excludes the impact of the excess cats in this quarter. So on a normal year, I would say 16% to 18%.
Operator
We will take our next question from Jay Gelb with Barclays.
Jay H. Gelb - MD and Senior Equity Analyst
Given the expectations for primary commercial insurance rates, it would seem that reinsurance rates could go up more. Could you talk about how much of its reinsurance protection Chubb already has placed for 2018, or how much it might purchase next year relative to this year, please?
Evan G. Greenberg - Chairman & CEO
Our purchase appetite is pretty steady, Jay, and that isn't something that changes year-on-year in any dramatic way. Our notion of risk and how we see risk has not changed. These cats didn't show us something else about risk that we didn't already know and that's what I tried to speak to in the beginning, and I think that speaks to it. Remember something about reinsurance. If primary gets rate, the reinsurer automatically got rate because excess pricing, when you think about cat protection, is a derivative of the premium that is collected and that premium is a proxy for the underlying rate and exposure. And so they automatically get rate. Now you're talking about rate on rate and how much that will be. And I can't speak to that at this moment in time, it would be pure speculation. Our treaties come up through the year, and we already have -- so depending on as they come up through the year, we have treaties that will run for 6 months into '18 and 3 months into '18 and 9 months into '18. It all varies. We don't have it all piled into 1 day.
Jay H. Gelb - MD and Senior Equity Analyst
That's what I figured. My next question is on the California wildfires. Can you discuss what you think the industry total insured loss might be and then Chubbs exposure given its market presence in high net worth homeowners as well as the winery industry?
Evan G. Greenberg - Chairman & CEO
Sure. Look, I can't speak to the industry loss right now. My own gut feel for it is the numbers that are out there that -- have a range around them and where it sort of coalesces around that $5 billion mark, doesn't feel off to me. But I don't know with any certainty. And for Chubb, I'm not going to give you a number because it's too early. It's too early to estimate our losses with precision, but from all we know at the moment, the net loss appears to be in the range of our cat load for the fourth quarter. But again, it's early days. You then going to say what's our cat load for the fourth quarter, and I'm not going to disclose our cat load for the fourth quarter. We don't do that. But I think you have a way of doing research into the past.
Jay H. Gelb - MD and Senior Equity Analyst
Would it be -- would the fourth quarter typically be less than the third quarter?
Evan G. Greenberg - Chairman & CEO
We gave the third quarter number, right? It's less.
Operator
And we'll take our next question from Brian Meredith with UBS.
Brian Robert Meredith - MD
Just -- 1 quick question just on the pricing one here. So history, I think, has shown that, particularly, in the casualty line and even in the property lines, that firming markets typically follow an increase in the kind of perception of risk in those lines of business or higher loss trends -- something happening. Do we really have that this time around?
Evan G. Greenberg - Chairman & CEO
I think we do among a lot of players, I do. Remember you had a lot of nonmodeled risk here. Let's take Harvey as an example. Harvey was a rain event. It wasn't a wind event. It was a flood event. And models hardly imagine that. I think when the dust all settles -- and you look at Maria, the devastation in Puerto Rico, I mean, it was pummeled back to the Stone Age. And the kind of business interruption exposures that can emerge from that, I think, stand up and get people to take attention. When you saw Irma approaching. If Irma moved 70 miles east, you were looking at a $150 billion event. I think people stood up to take attention to that. The number of territories that were, in essence, correlated in single event -- in single events and then in aggregate in the events. While people understood it theoretically possible, it's another thing when it actually occurs. And it's something about human nature, that when you're taking a bet and you don't lose the bet over years, your perception of risk just has a way of moderating. Humans start to feel almost omnipotent that way. And then, as soon as it hits, isn't it amazing how people feel chastened? It's not just in catastrophes. It's in any kind of risk taking. It's just the human condition. And that's what you've got going on. And that's why I started out by saying, it's not my company. And cat losses, well, stop your crying. This is the business we're in. This is what we do for a living.
Brian Robert Meredith - MD
Got you. And then what do you think about the reaction of the alternative markets or capital markets? And did they put a lid on any type of, (inaudible) property pricing, property cat, those types of things?
Evan G. Greenberg - Chairman & CEO
Well, we'll see. Look, the retro market was hit very, very hard and both with impaired capital and capital that is tied up because of the big question mark of whether it's impaired or not in the ultimate loss. To Elyse's question of what we've seen reported, but there will be a big delta between what's been reported and when you look back a year or 2 years from now what the ultimate loss is. And that capital -- a lot of capital is tied up. And how much capital comes back in and based on what kind of return will be expected, which I can guarantee, is a lot higher than to get a return, a lot higher than the rates they took in the past. Well, that's in front of us and it's a short window because here comes January 1 and reinsurers have to make their plans about how much capacity to commit.
Operator
And we'll take our next question from Ian Gutterman with Balyasny.
Ian Gutterman - Portfolio Manager
So, I had a couple of questions similar to Brian's. I'll ask a couple others first. So I guess Maria -- can you talk about more -- I've been surprised that's been everyone's lowest number. I know there's a lot of different ranges on the industry event, but nothing -- it seems for a lot of people, it's half of less of the others. And I would have thought for a company like yours, frankly, it would've been higher just given your national account exposure. There is almost as many Home Depots and Walmarts, et cetera, on the island of Puerto Rico as New Orleans. So I guess I'm surprised we're not seeing more national account type losses. I would say, if you can't open the doors.
Evan G. Greenberg - Chairman & CEO
I don't mind telling you that Chubb, fundamentally, overall our company in the last 2 years, 3 years, we cut our exposure in the Caribbean and Puerto Rico in half or more. We didn't like pricing, we didn't like aggregations and we didn't like terms, period. Number two, you're referring to big real estate schedules when you're using proxy of the kinds of accounts you named. And by the way, the most underpriced business with the greatest basis risk and exposure is real estate schedules. And any underwriter worth half their salt understands that. So that's how I can comment on it based on Chubb. I can't comment -- I can't comment for you based on others. And on one hand, I scratch my head a little bit, but on the other hand, what I do know is, many simply don't have good data yet. They don't know. And unlike us, they're not on the ground with people, actually examining the exposure with -- through the eyes of experienced adjusters and with that kind of command and control around it. And I think there will be a surprise. I think business interruption when -- time will tell, and I could be wrong, but I think business interruption is going to be uglier out of Maria than is imagined for the obvious reasons [Jay] electricity, ports and transportation, ability to operate.
Ian Gutterman - Portfolio Manager
Exactly, that's what I was wondering about. So I'm glad you're not on it, but I'm worried that others are. On your cat load, I'm doing some very back-of-the-envelope math, which is maybe a little unfair, but I think Phil said -- I guess I'm wondering do these events make you rethink your annual cat load just -- you said this is a 1 in 5 to 1 in 10, and Phil said, I think, $330 million is a normal Q3. So over 10 years, that would be $3.3 billion, and if you had a $1.9 billion every 7 years, that's about $2.9 billion with nothing in the other years. So again, that's a little bit change using Q3. But do these sort of return periods make you rethink what your normal cat load should be?
Evan G. Greenberg - Chairman & CEO
No. It actually -- and it depends, look, are you talking AALs or you talking expected cat in a normal year? And so there's different basis for thinking about it, number one. And number two, as I said, a 1 in 5 to a 1 in 10, and it fit within our expectation as we modeled aggregations and what our appetite would be at various return periods based upon our loss as a percentage of capital, as a percentage of earnings and as a percentage of industry as we imagined industry. These losses don't throw us.
Ian Gutterman - Portfolio Manager
Fair, fair, okay. So then, sort of...
Evan G. Greenberg - Chairman & CEO
I know what you want me to square for you on this call, and I'm not falling into a math that's not (inaudible) math with you -- of rapid-fire back-and-forth math.
Ian Gutterman - Portfolio Manager
I tried. I'm going to move on to the next question, Evan. I gave it my shot and I'm moving on to the next question. So to build on Brian's point about sort of what's the magnitude we might be seeing here, I guess to me, the question is 2005 versus 2011, right, and you could argue 2011, we hadn't seen that many quakes in a year, and some of those quakes were in places where the quakes were not even on the quake maps, right? I mean, those were significant surprises. And you had the tide flood, maybe that's like the wildfires being the final gut punch. And yet, all you really got was localized pricing. And I guess I'm just sort of going through sort of supply-demand and listening to all the calls so far, the companies that had much bigger losses than you, none of them are saying they're retreating. They're all saying that they are looking to maintain their net and grow their gross. So no one is pulling out. The alternative guys certainly are looking to reload. And if the models aren't changing and the rating agencies aren't changing, it doesn't necessarily seem there's more demand. So if the demand is the same, the capacity is at least the same, if not more, I just struggle with outside of, obviously, where there has been losses, why this is in 2011 like where it makes sense there should be pricing, but at the end of the day, there's just too many people who want to grow and none of the people are feeling pain.
Evan G. Greenberg - Chairman & CEO
Ian, there's your thesis. I gave you -- I don't agree with you, and I gave you my thesis. So...
Ian Gutterman - Portfolio Manager
Nothing else you want to add to that?
Evan G. Greenberg - Chairman & CEO
I don't. I'm not going to -- I don't think I'm going to repeat myself. I'm comfortable where I am. And by the way, I'm looking at property prices already moving. I can see trades and you can't. Now time will tell. Time will tell. I think the industry's reserve position is tighter than it was back in '11. I think the published results ex cat are under a lot more pressure than they were, and I've given you all my rationale.
Ian Gutterman - Portfolio Manager
Understood. Now it makes sense. It's a fair debate, we'll have to see how it plays out.
Evan G. Greenberg - Chairman & CEO
No. We don't need to debate it. We just need to get on.
Ian Gutterman - Portfolio Manager
I know, exactly, fair enough.
Evan G. Greenberg - Chairman & CEO
Hey, Ian, you know what, I'm going to give you -- I'm going to give you an answer. I can only be wrong.
Ian Gutterman - Portfolio Manager
I'm good at being wrong, so that's okay, I understood.
Evan G. Greenberg - Chairman & CEO
I can only be wrong. So what the heck. I told you what I imagined. I told you what -- if we can have anything to do with crafting reality, the reality we're going to craft.
Operator
We'll go next to Meyer Shields with KBW.
Meyer Shields - MD
A couple of small-ball questions, if I can. One, let me start with Phil. So the guidance that you gave for net investment income, we've seen interest rates just kind of sneak up in the past couple of months. Does that anticipate a continuation of that trend or is this based on current level?
Philip V. Bancroft - CFO, Executive VP
Well, it's a current view of our short-term run rate. We update the run rate periodically, and we think that it's based on the cash flow that we expect, and we do an analysis to estimate what we think our -- what we estimate as our investment income for the upcoming quarters.
Tim Boroughs - Chief Investment Officer
Yes. Let me just add. That's just for the fourth quarter. So for that, for higher rates to bite, it's going to take a while. So as we look forward, yes, we would anticipate some increase in rates and that will affect income and as we go forward in next few quarters.
Meyer Shields - MD
Okay, that's helpful. And can you talk to the adverse development in North American Personal?
Evan G. Greenberg - Chairman & CEO
Yes, Paul Krump is going to speak.
Paul J. Krump - EVP and President of Personal Lines & Claims
Sure. We had adverse PPD of $32 million PRS in Q3, that was some unfavorable loss development in homeowners, a little bit of an offset to that from the umbrella. That compares to $38 million in the third quarter of 2016. Recall here, Meyer, that we're harmonizing the 3 books of business and this is a huge portfolio. It's in the homeowners line, short-tail, very short-tail, and just get a little bit of movement on some of these losses. So there's nothing that what I would (inaudible) average noise.
Evan G. Greenberg - Chairman & CEO
That's all in the prior period, but -- I'm going to help you, Meyer. Okay, Paul, but we saw the loss ratio in the current accident year also continue to go up in Personal. So, why? I'm being your lawyer, Meyer.
Paul J. Krump - EVP and President of Personal Lines & Claims
That's a great question, Evan, and I don't consider that small ball. I consider that big boy ball. The Personal Lines current accident year loss ratio excluding cats is 51.9% in Q3. Well, 51.9%, Evan, I think, you and I would agree that's still a good number, it is 2.6% higher than Q3 2016 comp, which was at 49.3%, and that is several points higher than where we target the business to run. The causes of that elevated loss ratio were more large random fires than expected as well as an increase in water damage claims, specifically burst pipes. Given the high severity, low frequency nature of large fire losses, we anticipate random differences in their quarter-to-quarter impact. As you often say, it is our business. As I have mentioned in the past, we've been experiencing an elevated level of losses from burst pipes. We believe these water losses are an industry issue and are not isolated to us. But burst pipe losses typically cost us less than home fires. They're incredibly inconvenient for the homeowner and oftentimes, require them to be out of their homes for a period of time. Fortunately, no other carrier has more high net worth home data than us, and we have a proactive program to directly reach homeowners we've identified as more likely to have a water loss. We arm our customer with facts, and we give them practical advice on how to mitigate their chances of loss. We provide them with lists of qualified professionals who can install devices such as sensors, water softeners and especially automatic shutoff valves. And of course, once these devices are installed, we provide them with premium credits because of their improved risk. Though it's still early days for this proactive program, our agents and brokers are excited about it and readily embracing it. In fact, they like being advocates with tangible tools to reduce risk and rate. This is part of the Chubb high net worth advantage that so differentiates us in the market.
Meyer Shields - MD
Okay. And final question, which is a little bit of dead horse beating. But Evan, you talked about mechanic of the leadership position that you have at this time that Chubb is taking in terms of driving pricing.
Evan G. Greenberg - Chairman & CEO
Yes. It's in some ways a continuation of our playbook, we just crank it up. And it's how you -- it's how -- it's the command and control effect of underwriting management. So on one hand, it's materials you use to educate customers of why you need rate increases and what is mathematically the logic behind your statements and your action. And that is to educate both the customer and your distribution partners and prepare the environment. At the same time then, it's how you train and arm your underwriters, many of who have never been in an environment where they ask for a rate increase. They have only provided rate decreases and they're the ones on the front end. And for those of you who are not in the business, and you're not, you just observe the business, this is one of the reasons why it takes time for markets to move because going from the head to the tail to those who actually have to administer it on a daily transaction-by-transaction basis, the command and control to get them to move takes -- can take time. We understand that, and we're usually quicker. And it's getting our underwriters, therefore, and training them and having them work alongside others who've done it before and being able to actually experience getting a rate increase and that you can do it and you can ask for it. Sounds simple? Not as simple as you might imagine. And then to reinforce that. What you do is you start changing underwriting authorities and you say I'm only giving you of no authority to quote less than x. And if you're going to quote less than x as an increase, it has to -- it needs approval. It has to go up to a manager. And you limit the number of managers who have that authority to move off of your stated instructions. And that has a way of putting discipline within an organization. So that's just an example to you, of the kinds of tools and how you do it and you get out there in a very granular way to drive execution of something like this. We've done it before, and we know how to do that.
Operator
We'll go next to Jay Cohen with Bank of America Merrill Lynch.
Jay Adam Cohen - Research Analyst
A kind of different topic, I guess. I was wondering if you could talk about the tax proposals that are floating around Washington. We don't have a lot of specifics yet, but you probably have some view and also how it could affect Chubb given the complexity of Chubb's tax arrangements?
Evan G. Greenberg - Chairman & CEO
Yes. I won't comment directly because -- on the proposals right now because this is -- you've got House constructing their views of tax and details in proposals and they looking to pay for us, et cetera, and then you've got Senate doing the same. But let me -- but thank you for the question. I want to make a few other comments and observations about all this that I think are important at this moment. There's been a lot of noise recently from protectionist U.S. insurers, who are seeking to upset the global insurance market that is working well for U.S. consumers. They want to stop competition from foreign insurers who help keep rates down and that are providing the majority of the cash that is paying claims from, let's take, the recent hurricanes. U.S. insurer's claim they are suffering compared to foreign insurers because of tax rules. Well, this is fundamentally untrue. If you look at their stock prices over the last decade, shareholders of U.S. insurers, including Berkley and Travelers have been richly rewarded over the last decade. Just compare a cohort of U.S. insurers and foreign issuers, and you'll see a dramatic difference in how much more the U.S. insurers have improved their stock prices. And when they're not running the congress, to limit foreign competition, they are telling shareholders in the public just how well they are doing, just read their annual reports and listen to their analyst calls, it's a litany of market successes and bright futures. They also make false claims about insurance jobs moving overseas and decreasing tax revenues. In fact, look at what Chubb has done. It has invested for growth in the U.S. As ACE, we turned Cigna from a money loser into a profitable taxpaying company, securing the jobs of thousands of employees, and we used our capital to combine ACE and Chubb, we created a powerful competitor, offering U.S. customers an array of new products and efficiencies while rewarding shareholders at the same time. And increasing revenue and payrolls means an expanded U.S. tax base, bringing in more personal and corporate tax at all levels of government. While Chubb was investing in the U.S., what were U.S. companies, like Berkley and Travelers doing, complaining about decreasing market share while using their capital to buy back stock, maybe boosting their share price as a result, but failing to make the investments that are essential for long-term growth and creating more jobs. They know that strategy doesn't work against companies like Chubb, which are investing in innovation and growth. So they want to slow us down by changing the tax rules and protect their market share at the customers' expense. The current tax system, including the rules about affiliate Re makes sense because it recognizes that tax should be applied where the risk reside and that system has encouraged global distribution of risks, which maximizes the efficient use of capital, resulting in more competition and lower premiums. But you don't have to take my word that this system works to benefit customers and not as the tax avoidance scheme the U.S. insurers have fantasized. The OECD looked at the tax avoidance question and they would be skeptical of any industry claims. And they concluded that affiliate reinsurance has a legitimate business purpose. And the U.S. Treasury Department also concluded that affiliate Re is an important tool, allowing insurers to lower overall costs by pooling capital. So don't be fooled by claims of the U.S. insurers who're trying to hide behind a false patriotism and drape themselves in the flag. They are not interested in lowering costs for U.S. customers. They want to blow up the system that has worked so well to keep prices competitive in the United States. Thank you, Jay, for that question.
Operator
And we'll take our last question from Josh Shanker with Deutsche Bank.
Joshua David Shanker - Research Analyst
I want to dovetail a little on what Meyer asked about (inaudible) leadership. You guys have done a phenomenal job here, broke even in a $100 billion loss quarter. Your combined ratios on an underlying basis are about 100 basis points better than they were 3 years ago. Interest rates are higher for pricing. It looks like it's a better situation maybe for you and maybe not the industry. Why is Chubb in the best position to seek rate? Why don't let others make mistakes and allow you to capitalize on their mistakes as they come to you? Does Chubb need to be the one that demonstrates the leadership on the rate pricing?
Evan G. Greenberg - Chairman & CEO
Well, yes. I think Chubb and I think -- others will do as they think is in the interest of their own company. I know we'll do what's in the interest of our company. Josh, there are many -- you're looking at the book and aggregate and it's a global book you're looking at. You don't see the underlying parts and pieces as I do. And I know in the large commercial business and I know in pockets of all of our commercial business, the different classes and the different customer segments and where we are running a combined ratio that is adequate to earn a decent risk-adjusted return and where it is not. And we have many classes that are under pressure. They may earn an underwriting profit, but their combined ratio is too high. It is inadequate to earn a reasonable risk-adjusted return. And by the way, as I always say, we pay a penalty in terms of growth by maintaining underwriting discipline, particularly in those classes, in any class as it approaches inadequacy. And then what you know is, trend continues, it just marches on minute by minute, day by day. And you need -- you want -- you want to get ahead of that. You want to stay ahead of that. And what you don't want to do, and I don't want to see happen -- I care about our industry because I care about our industry's reputation and what customers don't want ultimately is volatility in pricing. They want more predictability. And so all of that says to me, when you add it all together, between opportunity, between need and between responsible behavior in an industry that is important to the plumbing of our economy, that we behave in a responsible rational way, so prices should and need to move.
Helen Wilson - SVP of IR
Thank you, everyone, for your time and attention this morning. We look forward to speaking with you again at the end of next quarter. Thank you, and good day.
Operator
This does conclude today's conference. We thank you for your participation. You may now disconnect.