Quant interview prep guides

Drawdown Interview Intuition

Drawdown interview intuition for path-dependent losses, peak-to-trough decline, risk constraints, and average-only mistakes.

Candidates discussing sequences of gains, losses, and risk constraints.

Drawdown is path-dependent

A drawdown measures decline from a prior peak. It depends on the sequence of outcomes, not only the final average.

Peak to trough

In a toy sequence, a fall from 100 to 80 after reaching 100 is a 20-point drawdown even if later outcomes recover.

Concrete example

Two payoff sequences can end at the same value but have different worst drawdowns along the way.

Relation to ruin

Drawdown is not identical to ruin, but large drawdowns can violate constraints or force stopping before positive expected value has time to show up.

Risk discussion

When a prompt includes risk limits, discuss path behavior in addition to expected value and variance.

Common mistakes

Candidates often compare only starting and ending values. Drawdown asks what happened in between.

Practice the pattern

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