Your offline cockpit for quant interviews: cheatsheets + simulation lab + flashcards for learning + experimenting + drilling. Customize your subject tiles, pin your weak points, and add your own flashcards and cheatsheets.
Your collection. Hit PIN on any cheatsheet card or flashcard below to pin a copy here; unpin to remove. Pins persist in this browser.
Jump straight to any cheatsheet topic (read) or flashcard domain (drill). Counts update as the library grows.
Your own reference library — build cheatsheet cards in the Workshop below; each new topic gets its own tab.
Search, filter by domain, click to flip. Drill out loud — narrate reasoning, don't recite. ◆ reported = appears in real quant interviews.
Build intuition by visualizing and simulating — an option-payoff explorer, a distribution explorer, a market-making game, a linear-regression simulator, and an in-browser Python sandbox. Switch tools below.
Interactive option-payoff explorer — pick a structure or build your own legs, tune spot / vol / time, read breakeven, max-profit & max-loss live. Toggle net P&L (folds in the Black–Scholes premium) vs payoff only (gross intrinsic value — the textbook diagram).
Make it yours — add your own subjects, flashcards, and cheatsheet cards. Saved in this browser; they appear instantly across Browse / Flashcards / Cheatsheets.
Creates a new subject in both the cheatsheet and flashcard sections — they share one subject list.