Market Making Practice Drills
Market making practice drills for fair value, spread, inventory, quote updates, mental math, and post-round review.
Candidates building market-making interview practice routines.
Fair-value drills
Practice turning probabilities, estimates, and payoff tables into a midpoint before you think about bid and ask.
Spread drills
Given a midpoint and uncertainty level, choose a spread and explain why it is tight, normal, or wide.
Inventory drills
Run short sequences where each trade changes your position, then requote with an inventory-aware skew.
Update drills
Practice reacting to a trade, signal, or clue by stating whether fair value, spread, size, or skew changes.
Review log
After each drill, log the main mistake category: fair value, arithmetic, spread, inventory, information update, or communication.
Common mistakes
Candidates often do random practice games without isolating the weak subskill. Focused drills make the next session easier to improve.
Practice the pattern
Use the LeetQuidity curriculum and calibration to turn this topic into a focused practice plan.