<"Anyone with any guesses on the 9% drop today?"> - and the spike on volume today ? <a href="http://finance.yahoo.com/q/bc?s=OPXA&t=1d&l=on&z=m&q=l&c=" rel="nofollow" target="_blank">http://finance.yahoo.com/q/bc?s=OPXA&t=1d&l=on&z=m&q=l&c=</a>