AIZ vs WRB: Which Is the Better Buy in 2026?
Last updated August 2026
Short answer
WRB is the larger of the two ($26.92B market cap): the incumbent the market prices for continued execution (15.02x forward earnings, beta 0.29). AIZ is the smaller challenger ($14.28B), cheaper on forward earnings (12.50x): more room to run, but more to prove. The real question is which set of drivers you believe, and whether owning one (or both) leaves you over-concentrated.
AIZ vs WRB: the tie-breaker metrics
Same yardstick, side by side (as of August 2026). Valuation lined up like this is most meaningful for two names in the same corner of the market, which these are. Figures are approximate; verify before investing.
| Metric | AIZ | WRB | What it tells you |
|---|---|---|---|
| Market cap | $14.28B | $26.92B | Size. The larger name is the incumbent; the smaller has more room to grow and more to prove. |
| Forward P/E | 12.50 | 15.02 | Valuation on next year's expected earnings, the same yardstick for both. Lower is cheaper for that growth; higher means the market is paying up. |
| Trailing P/E | 13.87 | 14.93 | Valuation on the last 12 months. A big drop from trailing to forward means the market expects earnings to jump, so more growth is already in the price. |
| Beta | 0.54 | 0.29 | Volatility vs the market. Above 1 swings harder than the index; below 1 is steadier. Higher beta means bigger drawdowns to hold through. |
| Price vs 52-week range | 86% of range | 60% of range | Where today's price sits between the 52-week low and high. Near the high is momentum with less margin of safety; near the low is out of favor or a discount, depending on why. |
Reading it: AIZ is the cheaper of the two on forward earnings, but cheaper is not the same as better. Pair the valuation with growth (how far the forward P/E sits below the trailing P/E) and risk (beta) before you decide.
Before you buy: how AIZ and WRB affect your concentration
The metrics above tell you which is the marginally better business. The bigger risk for most people is not picking the slightly worse stock, it is over-concentrating. AIZ and WRB share themes, so owning both, or adding either to what you already hold, can quietly push a large share of your portfolio into one bet.
This is the part a generic comparison page cannot answer, because it depends on what you own. Connect your brokerage and Walnut shows your real, combined AIZ and WRB exposure, flags overlap with your existing positions, and tells you if adding one would tip you past a concentration you are comfortable with, read-only by default, with your login staying at your broker. Walnut is not an investment adviser.
What does Assurant (AIZ) do?
Assurant, Inc. traces back to 1892 and today runs two reportable segments. Global Lifestyle is the larger one and covers Connected Living (mobile device protection, trade-in and upgrade programs, extended service contracts on appliances and electronics) plus Global Automotive (vehicle service contracts, guaranteed asset protection and other finance-and-insurance products sold through dealers and OEMs). Global Housing covers lender-placed homeowners insurance, renters insurance and manufactured-housing coverage. Almost none of this is sold under the Assurant name to a consumer directly. The company embeds itself with wireless carriers, retailers, auto dealers, OEMs and mortgage servicers, then underwrites and administers the programs behind the partner's brand, which is why most people who own an Assurant product have never heard of Assurant.
What does W. R. Berkley (WRB) do?
W.R. Berkley Corporation is one of the larger commercial property and casualty insurers in the United States, organized into two reporting segments: an Insurance segment that writes commercial lines, excess and surplus (E&S) coverage, and specialty risks through dozens of separately branded operating units, and a Reinsurance and Monoline Excess segment that assumes risk on a treaty and facultative basis. The decentralized, niche-by-niche structure lets each unit price complex or hard-to-place risks that standard carriers avoid, which is where the company earns much of its underwriting margin.
AIZ vs WRB: how do they differ?
Both fit overlapping themes, but they are not interchangeable. The useful comparison is which set of drivers and risks you want exposure to.
- AIZ drivers: Connected Living and the device replacement cycle; Global Automotive and the F&I channel.
- WRB drivers: Specialty and E&S underwriting discipline; Rising investment income on the float.
Which fits which kind of investor
A faster-growing, richer-valued name usually swings harder, so it suits a longer horizon and a higher tolerance for volatility; a steadier, more cash-generative business suits a more conservative or income-minded investor. The honest test is which set of risks you could hold through a drawdown: Catastrophe exposure is the clearest risk: Global Housing writes property coverage in hurricane and wildfire regions, and a severe season can swing a quarter materially, which is why management guides on an excluding-catastrophes basis and buys substantial reinsurance whose cost is itself a variable. For WRB, property and casualty insurance is cyclical, and commercial pricing has been softening after several strong years, which could compress future margins if rate increases no longer outpace claims inflation.
AIZ or WRB: which should you pick?
Growth-minded investors who believe the theme has years to run tend to accept the richer multiple for more upside; value-minded investors lean toward the cheaper forward earnings and steadier profile. Pick AIZ if you believe its drivers more; WRB if you believe its. Many investors hold both, but since they share themes, that is a concentrated bet, not diversification. Decide deliberately and check overlap. For the full detail, see the AIZ and WRB guides.
AIZ vs WRB: the full fundamentals
AIZ. All figures are approximate and tied to the August 2026 asOf date, so verify live numbers before acting. The low-teens earnings multiple against roughly 18 percent return on equity is the tension at the center of this stock: the market has historically discounted Assurant because its revenue depends on partner programs it does not control and because Global Housing carries catastrophe risk. Note that the P/S ratio near 1.1 is not a low bar for an insurer, since net margins here run in the high single digits by structure rather than by weakness.
WRB. WRB reported record Q1 2026 operating income of about $514 million and net income to common stockholders near $515 million, up more than 20% year over year, on revenue of roughly $3.69 billion. The trailing P/E in the mid-teens is typical for a high-quality P&C insurer, and the headline dividend yield near 0.55% understates total cash returned because Berkley frequently pays special dividends on top of its regular quarterly payout.
Headline figures (approximate, August 2026): AIZ shows revenue (ttm) ~$13.46 billion, with Connected Living at ~$5.85 billion and Global Automotive at ~$4.20 billion, net income (ttm) ~$1.06 billion, or ~$20.9 in trailing earnings per share, latest quarter (q2 2026) Revenue ~$3.45 billion, net income ~$298.6 million (up ~27%), adjusted EPS ~$6.41 (up ~26%), market cap and valuation ~$14.3 billion at a share price near $290, ~13.9x trailing earnings, ~13.0x forward, ~2.3x book, ~1.1x sales; WRB shows market cap ~$27B, revenue (ttm) ~$14.5B, net income (q1 2026) ~$515M, combined ratio (q1 2026) ~90.7%.
The bottom line: AIZ vs WRB
AIZ and WRB are related but distinct: same themes, different businesses and risks. Neither wins in the abstract; the right pick is whichever thesis you actually believe, sized so you are not over-concentrated in one theme. Walnut can show your combined AIZ and WRB exposure against your real portfolio. It is not an investment adviser.
Wondering how AIZ or WRB fits the portfolio you already own? Walnut is an AI investing app that connects your brokerage read-only and answers questions like that about your actual holdings: overlap, concentration, and how each position tracks the S&P 500. Compare the best AI portfolio analyzers or see the best AI investing apps in 2026.
Investing in Assurant with AI
Connect the broker you already use and ask Walnut's AI how AIZ fits what you actually hold: whether you own it already through a fund, what it would do to your concentration, and how it has tracked the S&P 500. Read-only by default, and you approve anything before it reaches your broker.
FAQ
What is the difference between AIZ and WRB?
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Assurant, Inc. W.R. They show up together because they share investment themes, but they are different businesses, so the better fit depends on which thesis you are expressing.
Is AIZ or WRB the better stock?
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Neither is universally better. WRB is the larger incumbent; AIZ is the smaller challenger and looks cheaper on forward earnings. Walnut is informational, not investment advice. Compare what each does, the tie-breaker metrics above, and the risks, then decide which fits your thesis and what you already own.
Which is cheaper, AIZ or WRB?
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On forward P/E (as of August 2026), AIZ trades at 12.50x and WRB at 15.02x, so AIZ is the cheaper of the two on next year's expected earnings. A lower multiple is not automatically the better buy: a richer valuation can be justified by faster growth, and a lower one can reflect real risk. Weigh the multiple against how fast each business is compounding.
Should you own both AIZ and WRB?
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Because they share themes, owning both concentrates you in that theme. That can be intentional (a focused bet) or accidental (less diversification than it looks). Walnut can show your combined exposure across both, and whether adding either over-concentrates you, before you buy.
What are the risks of AIZ vs WRB?
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AIZ: Catastrophe exposure is the clearest risk: Global Housing writes property coverage in hurricane and wildfire regions, and a severe season can swing a quarter materially, which is why management guides on an excluding-catastrophes basis and buys substantial reinsurance whose cost is itself a variable. Partner concentration is the second: Connected Living depends on a small number of very large wireless carriers and OEMs, and losing or repricing one program would be hard to replace quickly. Lender-placed insurance has a long history of state regulatory and consumer-litigation scrutiny over pricing and commission arrangements, and placement rates fall when mortgage delinquencies are low. Reserve development cuts both ways, with the raised 2026 outlook explicitly separating growth excluding prior-year reserve development from the headline figure. International operations add currency translation risk, and the investment portfolio's yield moves with interest rates. Walnut found no active securities-fraud class action against Assurant on the record as of August 2026; the company does disclose ordinary-course regulatory and consumer litigation in its filings, and readers should check the Legal Proceedings section of the latest 10-K and 10-Q directly. WRB: Property and casualty insurance is cyclical, and commercial pricing has been softening after several strong years, which could compress future margins if rate increases no longer outpace claims inflation. Reserve adequacy is a persistent risk: if past claims prove more costly than booked, prior-year reserve charges hit earnings. Catastrophe exposure from hurricanes, wildfires, and severe convective storms can spike losses in any quarter. Investment income depends on interest rates, so a sharp decline in yields would slow that engine, and credit or equity losses in the portfolio would flow through book value. Finally, the shares typically trade at a premium to book value, so any slip in the sub-91% combined ratio could pressure the multiple.
Walnut is informational, not investment advice. This page is descriptive and not a recommendation to buy or sell AIZ or WRB; figures are approximate and dated (as of August 2026). Verify current data before investing.