Leland, I've got no answer for you regarding shorts as I trade strickly Nas. Since I'm considering dabbling in listed I've got a question about one of your previous posts: I used to do that too but I have found that I often get filled on a at a better price using a regular market order. If you enter a limit order at .20 over the offer and I enter a market order at the same time guess who's order gets filled first I think you were implying that your market order would get filled first, but it seems that it would be in the best interest of the specialist to fill the limit order .20 over the offer? If he's got 2 minutes (max) to get to your market order why wouldn't he sell to the other guy for the higher price first? Then, if he upticks during those 2 min he can sell to your market order at a higher price too? As I said, I'm not real familiar with listed transactions so please fill me in. Thanks.