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Q: In a recent response to another member you mentioned "IBKR is almost twice the size of HOOD ($99B vs. $56B market cap, respectively)".

I ended up looking into IBKR and HOOD a bit more and discovered this about IBKR:

Depending on the data platform, some list the IBKR market cap as ~$25B and others list it as ~$99B. This has to do with whether you consider both public and private shareholders counts when calculating market cap.

I learned that GAAP handles this where the non controlling interests are removed from the income statement ("less net income attributable to non-controlling interests" which was $2.652B for 2024 leaving $765B Net Income) to leave only the net income attributable to IBKR public share holders. The bigger chunk goes to IBG Holdings controlled solely by Thomas Peterffy.

Based on this I believe IBKR is half the size of HOOD, at least the portion that common shareholders attribute earnings too.

How do you think about companies structured like this?
Read Answer Asked by Michael on February 20, 2025
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