Quant interview prep
Practice the problems Jane Street, Citadel and Optiver actually ask.
1,124 probability, EV and market making problems. Each with hints, a full solution, and the firms that ask it.
25 free, no account. The full bank, syllabus and dashboards are Pro.
Tagged by the desks that ask them
Jane Street469·Citadel Securities287·SIG179·Optiver170·Two Sigma129·Hudson River Trading82·Jump Trading70·DE Shaw65·and 9 more
1,124
Problems
17
Firms tagged
88
Topics
75
Free to start
The bank
1,124 problems, hints, then the full solution.
Difficulty 1 to 5, auto-graded. A curated path from the core 75 up to 250.
Firm-tagged
Train for the exact desk.
Jane Street's EV, Optiver's mental math, SIG's game theory. 469 Jane Street problems alone.
Timed games
Mental math and market making, on the clock.
A Zetamac-style trainer that finds your weak spots, and a market making sim with a live P&L.
Retention
Spaced repetition, so it sticks.
SM-2 scheduling, review forecasts, and concept notes worth reading.
Start with the 75 that matter most.
No card, no account.