Jane Street

4 ex-YC founders

Of the 3,256 Y Combinator founders who left the company they started, 4 work at Jane Street today — employment read from public LinkedIn as of July 2026, part of After YC, a census of 11,220 YC founders.

Alex Hsia

Quantitative Trader

Gait F24

in ↗

Leila Clark

Stardrift S24

Nathaniel Masfen-Yan

Quantitative Trader

Notebook Labs S22

in ↗

Zeyneb Kaya

Machine Learning Researcher

Topological S25

in ↗