Bid Price

The bid price is half the equation that goes into deciding the price of a stock (or any other tradable item). The other side is bid size (See: Bid Size).

The bid price consists of the amount someone is willing to pay for a particular stock. On the other side of the transaction is a series of "asks," the amount other people are looking to get for the stocks they are selling.

These separate prices are reconciled by market makers. They get the bids and asks together to reach an acceptable price. (See: Bid and Asked).