I'm an IB lover, but there's one thing I really don't understand about their system. I've read repeatedly that ETF's do not require an uptick for shorting. Yet IB requires an uptick from what I have been told by multiple IB reps. One member wrote in to IB (according to another thread) that he had difficulty even with screen prints of brokerage documents to get IB to understand/believe what he was talking about. But I have talked to several of their customer service reps and they seem to know that you don't have to uptick on an ETF but just claim it's IB's "software". I've got a feeling that I'm missing something here: IB is usually pretty savvy on giving its traders every advantage possible. Can someone explain to me if I'm missing something? Why would IB require an uptick on an ETF?