Also, I just checked NYSE's website and it shows BMY's previous close was indeed $27.15 ... The specialist must have been in a good mood this morning to have filled you @ $27.1 on you natural short ...
X Dividend today.....28 cents, that explains the uptick. Since a stock will open "flat" at a lower price (the dividend amount), then anything higher than that adjusted price will be an uptick.
Sorry for any confusion.....glad to see you're all paying attention!!