In 427 class the other day, I was talking about barrier options and lamenting the inability to place trades depending on the level of some market index. I found out today, that my broker does have the ability to make CONDITIONAL trades. This is a trade that gets triggered when the price of any security (or index) reaches a certain level. The trade could be in any security not just the one that serves as the trigger. My only consolation is that the trigger I was considering was never reached anyway.