Stocks / BLK vs IBKR

BlackRock, Inc. (BLK) vs Interactive Brokers Group, Inc. (IBKR)

BlackRock, Inc. and Interactive Brokers Group, Inc. side by side — fundamentals from SEC filings, refreshed nightly. Sector: Financial Services.

BLK is the larger company ($187.9B vs $159.9B). On the fundamentals, IBKR grows revenue faster (36.8% vs 29.8%); BLK earns a higher net margin (22.9% vs 16.0%); IBKR has the stronger return on equity (18.3% vs 9.9%). Over the last five years, IBKR returned 508.5% vs 39.3%. On the filings, IBKR carries fewer potential red flags (0 vs 2). Full numbers below — the stronger figure on each row is in green.

AI verdict — BLK vs IBKR, 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.

 BlackRock, Inc. (BLK)Interactive Brokers Group, Inc. (IBKR)
Market cap$187.9B$159.9B
Revenue (latest FY)$24.22B$6.16B
Net income (latest FY)$5.55B$984.00M
Revenue growth (5y CAGR)29.8%36.8%
Net margin22.9%16.0%
Return on equity9.9%18.3%
P/E ratio27.737.3
Dividend yield2.0%0.4%
Profitable years (of last 10)410
Positive free cash flowYes

Performance — BLK vs IBKR

Total returns from monthly split- and dividend-adjusted closes; 52-week range from the latest quote. Past performance is not a prediction.

 BlackRock, Inc. (BLK)Interactive Brokers Group, Inc. (IBKR)
1-year return5.5%54.5%
3-year return78.1%327.2%
5-year return39.3%508.5%
10-year return297.4%1039.6%
52-week range$917.39–$1219.94$58.95–$98.75

Verify the comparison

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

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See the full BLK vs IBKR 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 BLK's full financials →   Open IBKR's full financials →

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Frequently asked questions

Which is bigger, BLK or IBKR?

BlackRock, Inc. is larger by market capitalization — $187.9B versus $159.9B.

Which grows faster, BLK or IBKR?

Over the last five fiscal years, Interactive Brokers Group, Inc. grew revenue faster — 36.8%/yr versus 29.8%/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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