Arthur J. Gallagher & Co. (AJG)
Arthur J. Gallagher is an insurance brokerage and risk-management consulting firm serving businesses worldwide.
Financials stock comparison
AJG vs WTW: which business are you actually underwriting?
Compare Arthur J. Gallagher & Co. with Willis Towers Watson Public Limited Company using their business models, SEC classifications, fiscal calendars, current primary filings, and the research questions that matter. This is a thesis framework—not a price target or automatic winner.
- Sector
- Financials
- Industry
- Same SIC
- Shared themes
- 2
- Updated
- 2026-02-25
AJG vs WTW: quick comparison
| Company fact | AJG | WTW |
|---|---|---|
| Company | Arthur J. Gallagher & Co. | Willis Towers Watson Public Limited Company |
| Exchange | NYSE | NASDAQ |
| Headquarters | Not recorded | Not recorded |
| Founded | Not recorded | Not recorded |
| SEC industry | Insurance Agents, Brokers & Service | Insurance Agents, Brokers & Service |
| Fiscal year-end | December 31 | December 31 |
| Latest annual filing | 10-K · 2026-02-17 | 10-K · 2026-02-25 |
How the businesses differ
Willis Towers Watson Public Limited Company (WTW)
Willis Towers Watson provides insurance brokerage, risk advisory, and human-capital consulting.
The useful starting point is not which ticker has performed better. It is whether the two companies convert the same economic forces into revenue and cash flow in the same way. AJG is classified by the SEC as Insurance Agents, Brokers & Service, while WTW is classified as Insurance Agents, Brokers & Service. The matching industry code strengthens the peer comparison, although product mix can still differ materially.
Which thesis does each company fit?
Use the distinction below to decide which filing deserves deeper work. It is a research routing rule, not a recommendation or prediction.
Study AJG when…
- The shape of the yield curve and net interest margins
- Credit quality and loan-loss provisions
- Regulation and capital requirements
- Deal activity and market volatility
Study WTW when…
- The shape of the yield curve and net interest margins
- Credit quality and loan-loss provisions
- Regulation and capital requirements
- Deal activity and market volatility
Shared research themes
US marketsRates & central banks
SEC filing comparison and disclosure evidence
Start with primary filings because fiscal calendars and accounting presentation can make superficially similar quarters incomparable.AJG's fiscal year ends December 31, while WTW's ends December 31. Normalize the reporting periods before comparing growth, margins, capital intensity, or guidance.
The current verified House Clerk snapshot contains 0matched transaction rows for AJGand 0 for WTW. These delayed, range-based disclosures can identify a filing to inspect; they do not establish motive, conviction, or a real-time trading signal.
AJG primary filings
WTW primary filings
What this comparison cannot tell you
This page does not contain licensed live prices, a valuation model, earnings estimates, portfolio constraints, or a forecast of future returns. SEC classifications can be broad, company descriptions can lag strategic change, and the latest annual filing may predate a material acquisition or divestiture. Read subsequent quarterly and current reports before making a decision.
A stronger business is not automatically the better stock. Starting valuation, expectations, capital structure, cyclicality, dilution, and the probability of each thesis determine the investment outcome. Use this comparison to frame the work, then verify the numbers in the linked filings and current company disclosures.
More comparisons involving AJG or WTW
AJG vs WTW FAQs
Are AJG and WTW direct competitors?
Arthur J. Gallagher & Co. and Willis Towers Watson Public Limited Company share the SEC industry classification “Insurance Agents, Brokers & Service.” That makes the operating comparison relevant, but it does not prove that every product, customer, or revenue stream competes directly.
Which is better, AJG or WTW?
There is no context-free winner. Compare the operating exposures, filing evidence, valuation, balance sheet, and risks against the specific thesis you are testing. This page deliberately does not turn a static profile into a buy or sell recommendation.
Does this AJG vs WTW comparison include live prices?
No. Yield Theory does not republish unlicensed real-time market data. Use a regulated broker or licensed quote provider for current prices, then use the primary filings here to test the business thesis.
Where does the company information come from?
Company classifications, fiscal year-ends, and filing links come from the SEC EDGAR submissions API snapshot refreshed 2026-08-10. Business summaries and research themes are maintained by Yield Theory.
Data snapshot: SEC EDGAR submissions API, refreshed 2026-08-10. Independent educational research; not investment advice.
Go beyond AJG vs WTW.
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