Liquidity Risk Quant Interview Guide
Liquidity risk quant interview guide covering spread, depth, volume, market impact, liquidation horizon, capacity, and examples.
Candidates connecting portfolio size, turnover, and market depth.
Liquidity risk is execution risk
Liquidity risk is the risk that positions cannot be traded quickly, cheaply, or reliably at the intended size when the portfolio needs to act.
Size changes the problem
A trade that is easy for a small portfolio can become expensive or impossible for a large one. Capacity depends on volume, depth, and impact.
Concrete example
A strategy trading small-cap names may show high gross returns but fail when position sizes require a large share of daily volume.
Liquidation horizon matters
Risk should consider how long it would take to exit under normal and stressed conditions, not just whether the asset usually trades.
Common mistakes
Candidates often use average volume alone. Liquidity also involves spread, depth, volatility, market state, and whether many participants exit together.
Practice the pattern
Use the LeetQuidity curriculum and calibration to turn this topic into a focused practice plan.