Quant interview prep guides

Pre Trade Risk Checks Interview Guide

Pre-trade risk checks interview guide for order validation, price bands, size limits, exposure, throttles, rejects, and safe submission.

Candidates explaining risk controls in order gateways and trading systems.

Risk checks guard order entry

Pre-trade checks evaluate an order before it leaves the system. Common toy checks include price reasonableness, max size, exposure, duplicate order detection, and throttles.

Checks need clear failure behavior

A rejected order should produce an explicit reason and leave state consistent. Silent drops can create confusion for strategy logic and operators.

Concrete example

If a buy order price is far above a reference price, a price-band check can reject it before submission and alert the strategy or operator.

Risk controls have tradeoffs

Checks that are too strict can block valid trading, while loose checks can allow dangerous orders. Good answers discuss configuration, monitoring, and testing.

Common mistakes

Candidates often describe risk checks as a single if statement. Production-like reasoning includes state, limits, failure modes, logs, and escalation paths.

Practice the pattern

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