Inventory Risk Management
Inventory risk management is the process by which market makers balance their holdings to avoid excessive exposure to price fluctuations. When a market maker buys an asset from a seller, they accumulate a long position, and when they sell to a buyer, they accumulate a short position.
If the market moves against their position, the market maker incurs losses, which they must hedge or offset through subsequent trades. Effective management involves adjusting quotes to skew the order flow, thereby encouraging trades that move the inventory back toward a neutral state.
This strategy is essential for maintaining consistent liquidity without taking on undue directional risk. In volatile markets, inventory risk is a primary driver of quote adjustments, as market makers must constantly rebalance their portfolios to remain solvent.
This dynamic interaction between inventory levels and quote pricing is a core component of market microstructure.