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Re: dussfan post# 171

Wednesday, 05/01/2013 3:51:06 PM

Wednesday, May 01, 2013 3:51:06 PM

Post# of 278
You can only sell short if your broker has identified a source where they could borrow the shares from. When your trade settles three days after the trade (t+3), if your broker no longer has a source to borrow the shares from, your position will automatically be closed, sometimes without warning. At ST this happens a lot, I am told. It happens much less often at Interactive Brokers, as they have a powerful algorithm that manages short positions on a first-in last-out basis.