AJG vs WTW: Which Is the Better Buy in 2026?
Last updated October 2026
Short answer
AJG is the larger of the two ($65.33B market cap): the incumbent the market prices for continued execution (17.21x forward earnings, beta 0.55). WTW is the smaller challenger ($29.30B), cheaper on forward earnings (13.76x): 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.
AJG vs WTW: the tie-breaker metrics
Same yardstick, side by side (as of October 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 | AJG | WTW | What it tells you |
|---|---|---|---|
| Market cap | $65.33B | $29.30B | Size. The larger name is the incumbent; the smaller has more room to grow and more to prove. |
| Forward P/E | 17.21 | 13.76 | 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 | 42.27 | 19.52 | 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 | 0.55 | 0.47 | 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 | 69% of range | 68% 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. |
| Price / book | 2.75 | 3.82 | How much you pay over book value. Very high can signal an asset-light, high-return business or a rich price. |
Reading it: WTW 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 AJG and WTW 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. AJG and WTW 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 AJG and WTW 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 Arthur J. Gallagher (AJG) do?
Arthur J. Gallagher & Co. is a global insurance brokerage, risk management, and consulting firm, ranking as the third-largest publicly traded insurance broker behind Marsh & McLennan and Aon. Its Brokerage segment places property, casualty, employee benefits, wholesale, and reinsurance coverage for businesses and institutions, earning commissions and fees, while its Risk Management segment (Gallagher Bassett) handles third-party claims administration. The company runs an asset-light, fee-and-commission model that generates strong free cash flow, and it has built a decades-long track record of growing by acquiring smaller regional brokers and folding them into its platform.
What does Willis Towers Watson (WTW) do?
Willis Towers Watson (Nasdaq: WTW) is a global professional services firm built around two core lines: Risk and Broking (insurance brokerage, risk advisory, and reinsurance-adjacent services) and Health, Wealth and Career (employee benefits, retirement and pension consulting, compensation, and investment advice). The Health, Wealth and Career segment is the larger contributor at roughly 60% of revenue, while Risk and Broking has been the faster-growing engine. The company earns recurring fees and commissions from corporate clients ranging from small businesses to multinationals, which gives revenue a relatively stable, subscription-like character.
AJG vs WTW: 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.
- AJG drivers: Acquisition-led compounding; AssuredPartners integration and synergies.
- WTW drivers: Risk and Broking momentum; Margin expansion.
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: The most cited concern is valuation, as AJG often trades at a large premium to the broader insurance sector and to some peers, leaving little room for disappointment. For WTW, wTW is a mature business with mid-single-digit organic growth, so any deceleration in Risk and Broking or benefits demand can pressure a valuation that already assumes steady execution.
AJG or WTW: 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 AJG if you believe its drivers more; WTW 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 AJG and WTW guides.
AJG vs WTW: the full fundamentals
AJG. The gap between ~42 times trailing GAAP earnings and ~17 times forward adjusted earnings is mostly acquisition accounting: amortization of acquired intangibles and integration costs from AssuredPartners depress GAAP profit far more than the adjusted figure management guides to. On the forward basis the stock is cheaper than it has been for much of the past several years, after a flat 2026 and a ~10% decline over twelve months. The October 29, 2026 report, with consensus near $2.99 of adjusted EPS, is the next read on whether organic growth and synergies hold up against softer property pricing.
WTW. As of October 16, 2026 WTW traded around $314 per share with a market cap near $29 billion, about 19 times trailing and 14 times forward earnings, a moderate multiple for a stable advisory and broking franchise. Second quarter 2026 revenue of ~$2.47 billion grew about 9% and adjusted EPS beat consensus for a fourth straight quarter, yet the stock is down ~4% for the year. Third quarter results on October 29 carry a consensus of about $3.59 a share.
Headline figures (approximate, October 2026): AJG shows market cap ~$65 billion at ~$253 per share, revenue (ttm) ~$15.1 billion, up ~31% year over year in the June 2026 quarter, q2 2026 revenue ~$4.0 billion, q2 2026 adjusted eps ~$2.84 vs ~$2.81 expected; WTW shows revenue (ttm) ~$10.1B (Q2 2026 up ~9% YoY), net income (ttm) ~$1.56B (~15% profit margin), q2 2026 adjusted eps $3.35 vs ~$3.11 expected, market cap ~$29B.
The bottom line: AJG vs WTW
AJG and WTW 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 AJG and WTW exposure against your real portfolio. It is not an investment adviser.
Wondering how AJG or WTW 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 Arthur J. Gallagher with AI
Connect the broker you already use and ask Walnut's AI how AJG 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 AJG and WTW?
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Arthur J. Willis Towers Watson (Nasdaq: WTW) is a global professional services firm built around two core lines: Risk and Broking (insurance brokerage, risk advisory, and reinsurance-adjacent services) and Health, Wealth and Career (employee benefits, retirement and pension consulting, compensation, and investment advice). 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 AJG or WTW the better stock?
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Neither is universally better. AJG is the larger incumbent; WTW 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, AJG or WTW?
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On forward P/E (as of October 2026), AJG trades at 17.21x and WTW at 13.76x, so WTW 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 AJG and WTW?
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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 AJG vs WTW?
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AJG: The most cited concern is valuation, as AJG often trades at a large premium to the broader insurance sector and to some peers, leaving little room for disappointment. Larger acquisitions such as AssuredPartners carry integration, cultural, and technology-system risk that could delay synergies. Softening property insurance pricing could trim organic growth by up to about a percentage point if it continues. Regulatory scrutiny is a growing factor, including Department of Justice attention to roll-up M&A strategies and new federal rules requiring more granular disclosure of broker commissions. Benefits-related exposure to Medicare Advantage payment rates and general economic sensitivity of client exposures round out the risk set. Leverage is higher than it used to be: debt of ~$14.1 billion against ~$1.4 billion of cash after AssuredPartners leaves less room for error if organic growth slows. Several analysts trimmed targets into the third quarter (Wells Fargo to $284 from $291 on October 12, 2026), even as others raised theirs (Evercore ISI to $307 from $295). WTW: WTW is a mature business with mid-single-digit organic growth, so any deceleration in Risk and Broking or benefits demand can pressure a valuation that already assumes steady execution. Much of the earnings-per-share growth depends on margin gains and buybacks rather than revenue, which limits the cushion if margins stall. The firm is smaller and historically lower-margin than Marsh McLennan and Aon, leaving it more exposed to competitive pressure on talent and pricing. Insurance brokerage revenue is sensitive to insurance pricing cycles and macro conditions that affect client budgets and payrolls. Large advisory and consulting firms also carry integration, litigation, and reputational risks tied to complex client engagements. Brokerage sentiment has cooled in 2026: WTW shares are down ~4% year to date despite beating estimates, and in mid-October BofA and Wells Fargo trimmed price targets to $365 and $364, so a softening in commercial insurance pricing would hit a stock already priced for steady execution.
Walnut is informational, not investment advice. This page is descriptive and not a recommendation to buy or sell AJG or WTW; figures are approximate and dated (as of October 2026). Verify current data before investing.