Dark Pools Quant Interview Guide
Dark pools quant interview guide covering hidden liquidity, midpoint fills, adverse selection, fill probability, routing, and caveats.
Candidates discussing hidden liquidity, information leakage, and venue choice.
Dark pools provide non-displayed liquidity
Dark venues allow participants to seek fills without displaying full order interest in the public limit order book before execution.
Hidden liquidity has tradeoffs
A dark fill may reduce market impact or spread cost, but fill probability, adverse selection, and information leakage still matter.
Concrete example
A large institutional order may ping dark venues for midpoint liquidity before routing residual quantity to lit markets.
Venue quality must be measured
Compare fill rates, price improvement, toxicity, reversion after fills, fees, and missed opportunity across venues over time.
Common mistakes
Candidates often assume dark fills are automatically better. A fill can be cheap on spread but poor if adverse selection is high.
Practice the pattern
Use the LeetQuidity curriculum and calibration to turn this topic into a focused practice plan.