What Is A Sweep?
Transcript
Orders marked SWEEP are multi-exchange sweep to fill orders.
A sweep is typically a large order that is broken into a number of different smaller orders that can then be filled more quickly on multiple exchanges. A sweep order instructs your broker to identify the best prices on the market, regardless of offer size, and fill your order piece-by-piece until the entire order has been filled.
These types of orders are especially useful for option traders who prefer speed over the lowest possible price.