Quant Interview Practice Plan for Traders
A quant trader interview practice plan covering mental math, probability, expected value, market making games, risk, and communication.
Quant trader and trader intern candidates building a role-specific prep plan.
Prioritize decision speed with control
Trader interviews test whether you can make reasonable decisions under uncertainty. Practice should combine probability, expected value, mental math, and market making instead of treating them as isolated school topics.
Build the weekly rotation
A trader-focused week can include mental math warmups, one probability block, one expected value or betting block, one market making game, and one review session. The review should identify whether misses came from math, quote discipline, or communication.
Practice market updates
Do not stop at the first quote. Practice moving markets after trades, new information, and inventory changes. Say why the bid, ask, or width changed. This trains the live decision loop that trading interviews often test.
Concrete session
A 75-minute session could use ten minutes of fractions and percentages, twenty minutes of expected value bets, twenty minutes of a market making game, and twenty-five minutes reviewing the worst quote or sizing decision.
Add mocks late enough
Mocks are useful once the main methods are visible. Early mocks should diagnose. Later mocks should test whether you can combine arithmetic, risk, and explanation without freezing.
Common mistakes
Trader candidates often chase speed while ignoring risk, or practice puzzles without quoting or sizing decisions. A strong plan repeatedly asks: what is fair value, what is the uncertainty, and what trade would I actually make?
Practice the pattern
Use the LeetQuidity curriculum and calibration to turn this topic into a focused practice plan.