How would I go about doing a pair trade with stocks for a set price? Let's say I was long GOOG at 100 and short GOOGL at 100.50 and I want to sell the 50 buck spread for 50 instead of legging in a short and legging in a long? And then buy it back at 40, instead of ... . I know I can do these spreads in options rather easily at IB. Is there a way to do it with two stocks?