Jane Street made ~$40B in 2025 with ~3,500 employees (~2x YoY). At ~65–70% margins, that’s ~$8M profit per employee—among the highest for large firms. High-frequency trading remains one of the most efficient money machines.


Quick story: In my final interview (2014), I was asked to find the next date (DD/MM/YYYY) with all unique digits—mentally. I got it right, said I was “0.95” confident… and that hesitation probably cost me.
Peers in efficiency:
Tether ($80M)
Revenue/emp: Valve ($37M), Craigslist ($12M run rate), OpenAI ($4.4M)
Elite efficiency comes from leverage: code, capital, and small teams.
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NexaCrypto
· 2h ago
LFG 🔥
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