Quant interview prep guides

Trading Game After Mistake Interview

Trading game after mistake interview guide for correcting arithmetic, quote, and state errors during live trading rounds.

Candidates practicing recovery in live rounds.

Name the mistake plainly

If you notice a mistake, say what was wrong and correct it. A clear correction is better than quietly building on a broken state.

Restore the state

After an error, rebuild the current cash, inventory, fair value, and quote before making the next decision.

Concrete example

If you quoted 48 at 52 but meant a 6-point spread around 50, correct it to 47 at 53 and explain the spread.

Do not panic-adjust

A mistake does not mean the next quote should be extreme. Return to the framework and update only what changed.

Review the failure mode

After the round, label whether the mistake came from arithmetic, state tracking, rule confusion, or communication.

Common mistakes

Candidates often hide mistakes until they become larger. In live interviews, clean recovery is usually stronger than pretending nothing happened.

Practice the pattern

Use the LeetQuidity curriculum and calibration to turn this topic into a focused practice plan.