upc = uniform practice code, rule 11830. These are stocks that the Fed designates as unavailable for shorting. re: the short list, i found out that Bear is not one of the firms we deal with but the firms we borrow stocks from are the big names in the business. I'll pass along your message about the IB short list and see if we can find a few additional sources. BTW, i doubt beating up on the xmit button will get the system to relent.