Call

A call can mean two things. It can refer to an option contract giving the owner the right, but not the obligation, to buy a specified amount of an underlying security at a specified price within a specified time. It can also refer to a call auction, a time when buyers set a maximum acceptable price to buy, and sellers set the minimum satisfactory price to sell a security on an exchange. Matching buyers and sellers in this process increases liquidity and decreases volatility. The auction is sometimes referred to as a call market.