Hey there... I trade prop through a firm that clears with Penson, and today they couldn't find any AAPL to short. The customer service rep says that this is not all that unusual, and does happen from time to time. Are they correct in this statement, for a NASDAQ 100 stock like AAPL? Or should I expect my firm to always be able to borrow a stock that is this liquid? Was anyone else able to short APPL today? (Not that it was a good idea, mind you ) Thanks!