The number of Shares, contracts, or units a seller is willing to sell at the ask price in a trading environment. It represents the supply side of a trade and is an essential element of the bid-ask spread. A large ask size can indicate strong resistance at a particular price point, while a small ask size may suggest limited selling pressure. Traders use ask size, along with bid size, to assess market depth and liquidity. Understanding ask size helps in making informed decisions regarding order placement, especially in fast-moving or illiquid markets.
Example:
The order book shows 2,000 Shares available at the current ask price, indicating how much stock sellers are offering at that level.
