Quant Finance

⏱ 7 min read Linear Algebra for Quant Interviews: What’s Actually Tested Linear algebra is the core mathematical machinery of modern quantitative finance. Almost […] Read article

⏱ 7 min read Monty Hall Variations: Game-Show Probability for Quant Interviews The Monty Hall problem is the most famous probability puzzle ever posed Read article

⏱ 6 min read Conditional Probability and Bayesian Interview Problems for Quant Roles Conditional probability is the most heavily tested topic in quant-trading interviews Read article

⏱ 8 min read 100 Prisoners, Hats, and Light Bulbs: Classic Quant Brainteasers A handful of brainteasers come up so often in quant-trading interviews Read article

⏱ 7 min read Market-Making Interview Questions: Bid-Ask, Fair Value, Spread Reasoning The market-making round is the central interview at firms whose business is Read article

⏱ 8 min read Random Walks and Stopping Times for Quant Interviews Random walks come up everywhere in quant interviews because they model price Read article

⏱ 8 min read Expected Value and Fair-Game Reasoning for Quant Interviews Expected value is the central tool of quant interviews, trading, and risk Read article

⏱ 5 min read Mental Math Drills for Trading Interviews: How to Pass the Test The mental math test is the gatekeeper at most Read article

⏱ 9 min read Options Pricing Basics for Quant Interviews: Black-Scholes, Greeks, Put-Call Parity Options pricing comes up in nearly every quant interview at Read article

⏱ 9 min read Probability Brainteasers for Quant Interviews: Dice, Coins, Cards, Urns Quant interview rounds at Jane Street, Citadel, Two Sigma, Optiver, SIG, Read article

⏱ 10 min read Breaking Into Quant Finance and Wall Street: 2026 Guide Quant finance and Wall Street technology are a parallel universe to Read article