Stocks / AON vs FIBK

AON vs FIBK: Which Stock Is the Better Buy?

Aon plc and First Interstate BancSystem, Inc. side by side — fundamentals from SEC filings, refreshed nightly. Sector: Financial Services.

AON is the larger company ($76.5B vs $3.5B). On the fundamentals, FIBK earns a higher net margin (28.5% vs 21.5%); AON has the stronger return on equity (39.5% vs 8.8%); FIBK trades cheaper on earnings (11.8× vs 19.9×). 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 FIBK, 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)First Interstate BancSystem, Inc. (FIBK)
Market cap$76.5B$3.5B
Revenue (latest FY)$17.18B$1.06B
Net income (latest FY)$3.69B$302.10M
Revenue growth (5y CAGR)9.2%
Net margin21.5%28.5%
Return on equity39.5%8.8%
P/E ratio19.911.8
Dividend yield0.9%5.2%
Profitable years (of last 10)1010
Positive free cash flowYes

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Use the filing period and source shown by each tool before treating two figures as comparable.

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See the full AON vs FIBK 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 FIBK's full financials →

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Frequently asked questions

Which is bigger, AON or FIBK?

Aon plc is larger by market capitalization — $76.5B versus $3.5B.

Which grows faster, AON or FIBK?

Five-year growth data is not available for both companies.

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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