Stocks / AON vs WTFC

AON vs WTFC: Which Stock Is the Better Buy?

Aon plc and Wintrust Financial Corporation side by side — fundamentals from SEC filings, refreshed nightly. Sector: Financial Services.

AON is the larger company ($76.5B vs $10.5B). On the fundamentals, WTFC grows revenue faster (74.2% vs 9.2%); WTFC earns a higher net margin (28.4% vs 21.5%); AON has the stronger return on equity (39.5% vs 10.7%). On the filings, AON carries fewer potential red flags (0 vs 1). Full numbers below — the stronger figure on each row is in green.

AI verdict — AON vs WTFC, read from the filings

The stronger business, the cheaper stock, and the risks — synthesised from both companies’ SEC filings, every figure computed not guessed. Not investment advice.

 Aon plc (AON)Wintrust Financial Corporation (WTFC)
Market cap$76.5B$10.5B
Revenue (latest FY)$17.18B$2.73B
Net income (latest FY)$3.69B$774.15M
Revenue growth (5y CAGR)9.2%74.2%
Net margin21.5%28.4%
Return on equity39.5%10.7%
P/E ratio19.913.0
Dividend yield0.9%1.4%
Profitable years (of last 10)1010
Positive free cash flowYesYes

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See the full AON vs WTFC breakdown

Both companies across 19 years of income statement, balance sheet and cash flow — with ratios, health checks and Ask, the SEC-grounded research assistant. Free, no account needed.

Open AON's full financials →   Open WTFC's full financials →

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Frequently asked questions

Which is bigger, AON or WTFC?

Aon plc is larger by market capitalization — $76.5B versus $10.5B.

Which grows faster, AON or WTFC?

Over the last five fiscal years, Wintrust Financial Corporation grew revenue faster — 74.2%/yr versus 9.2%/yr, computed from SEC-filed statements.

Where does this data come from?

All figures are computed from official SEC filings (10-K), refreshed nightly. This is a data comparison, not investment advice.

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