Market Making Inventory Risk
Market making inventory risk is the danger that a liquidity provider will be left holding an unwanted position as a result of their market-making activities. Because market makers are required to provide both buy and sell quotes, they often accumulate long or short positions based on the order flow.
If the price moves against their accumulated inventory, they face significant losses. To manage this risk, market makers use sophisticated hedging strategies, such as delta hedging with options or futures.
They also constantly adjust their quotes to encourage offsetting trades and rebalance their inventory. In volatile markets, inventory risk increases significantly, forcing market makers to widen their spreads to compensate for the higher risk.
This risk is a primary driver of liquidity provision costs. Effective management of inventory risk is the hallmark of a successful market maker.