Schwab has the hard to borrow flag on SPNG. Here is what that means: <a href="http://www.investopedia.com/ask/answers/09/hard-to-borrow-list.asp?viewed=1" rel="nofollow" target="_blank">http://www.investopedia.com/ask/answers/09/hard-to-borrow-list.asp?viewed=1</a> ¶ What does that mean?