SIG Interview Prep
How to prepare for SIG quant and trading interviews with probability, decision games, expected value, and communication.
Candidates preparing for SIG trading, quant, or internship interviews.
What to expect
SIG preparation should emphasize probability, game reasoning, expected value, and explaining decisions. Many prompts are simple to state but require disciplined handling of uncertainty and incentives.
Concrete example
A betting prompt may ask whether you take a positive expected value wager. A strong answer computes the edge, discusses variance and bankroll, and says how size changes if the game repeats.
How to practice
Practice probability and expected value with an emphasis on decision-making. After solving a problem, ask what bet you would take, what price is fair, and what information would change your answer.
Decision layer
After the math, translate the result into an action: take the bet, pass, quote wider, size smaller, or ask for more information. That decision layer is what makes the answer interview-useful.
Common mistakes
Candidates stop after the math and never make the trading decision. Another mistake is failing to communicate uncertainty. In game-based interviews, the reasoning is the product.
Practice the pattern
Use the LeetQuidity curriculum and calibration to turn this topic into a focused practice plan.