AJG vs WTW: Which Is the Better Buy in 2026?

Same yardstick, side by side (as of September 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.

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.

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.

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.

Full AJG guide

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.

Full WTW guide

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.

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.

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. AJG reported roughly 28% total revenue growth in Q1 2026, blending about 5% organic growth with large contributions from acquisitions including AssuredPartners. The stock's trailing P/E in the mid-30s to around 40x sits well above the broader insurance industry average, a premium the market has historically assigned to its consistency. Forward multiples look lower on expected earnings growth, but the shares clearly price in continued execution.

WTW. As of July 2026 WTW traded around $289 per share with a market cap near $27 billion and a forward P/E under 15, a moderate multiple for a stable advisory and broking franchise. Full-year 2025 revenue was about $9.7 billion with net income around $1.6 billion, and Q1 2026 revenue grew roughly 8% to $2.41 billion with adjusted EPS up 19%. The stock is valued more like a steady cash compounder than a high-growth name.

Headline figures (approximate, July 2026): AJG shows market cap ~$56 billion, revenue (ttm) ~$13 billion, q1 2026 revenue ~$4.76 billion, q1 2026 adjusted eps ~$4.47; WTW shows revenue (ttm) ~$9.9B, net income (fy2025) ~$1.6B, market cap ~$27B, forward p/e ~15x.

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.