Among other things, some huge sell orders would be prohibited.

He saw it was a sell order signed by the Gamemaster.

Their sell orders were filled later in the day, as the price declined, at prices of $64.50 to $95 a share.

The shares opened the next day at $16.10, as public investors sent in sell orders.

"We ran into sell orders because the market got ahead of itself."

Most of the sell orders were 5,000 to 10,000 share blocks.

"He had a sell order in for a while, and the stock happened to hit the price that day."

The sell order caused the futures market to plunge 24 percent in minutes.

The sell orders continued for about 20 minutes, and by 10:30 the stock had fallen more than $2 in half an hour.

It's how fast you can get to the trading desk to place your sell order.