Market Making Liquidity Interview Intuition
Market making liquidity interview intuition for why quotes provide willingness to trade and how spread, size, and risk affect liquidity.
Candidates discussing why market makers quote at all.
Liquidity means available trading interest
In interview terms, liquidity is the willingness to buy or sell at quoted prices and sizes. A market maker supplies that willingness under uncertainty.
Spread compensates risk
Market makers do not provide liquidity for free. Spread helps compensate for uncertainty, adverse selection, inventory, and transaction costs.
Concrete example
A quote of 49 at 51 for 10 units provides more immediate liquidity than a quote of 45 at 55 for 1 unit, but it may also carry more risk.
Size is part of liquidity
A tight quote for tiny size and a wider quote for larger size can represent different risk choices.
Risk limits reduce liquidity
When inventory or loss limits bind, a market maker may quote wider, smaller, or not at all on one side.
Common mistakes
Candidates often discuss only price. Liquidity also depends on size, reliability, and willingness to trade after the market moves.
Practice the pattern
Use the LeetQuidity curriculum and calibration to turn this topic into a focused practice plan.