Open

Open

Used in the context of general equities. Having either buy or sell interest at the indicated price level and side of a preceding trade. "Open on the buy/sell side" means looking for buyers/sellers (for someone who is a seller/buyer). Antithesis of clean.

Open

1. The time trading begins on an exchange. This is important to matters like a security's opening price or opening bid. See also: Close.

2. An order to buy or sell a security that has not yet been filled. Some orders are only open for a certain amount of time, while some remain open until they are filled. See also: IOC, GTC.