Inventory Skew
Inventory skew refers to the situation where a market maker's holdings are heavily weighted toward one side of the market, either long or short. This often happens when the market maker experiences a series of one-sided trades, such as buying more than they are selling.
To manage this imbalance, the market maker will skew their quotes, offering more attractive prices on the side they want to trade to reduce their position. For example, if they are long too much of an asset, they will lower their sell price to encourage buyers and raise their buy price to discourage further accumulation.
Inventory skew is a natural result of market-making activity and is a key indicator of the directional pressure being exerted on the market. It forces the market maker to constantly balance their book to maintain a neutral position.