NEW YORK (TheStreet) -- Since March 9, 2009, when it hit bottom, the U.S. stock market is up 191%. I have been fully invested the entire time. But I also recognize that, like every bull market, this one will also come to an end. Another bear market is lurking out there somewhere. Read More: 8 Stocks George Soros Is Buying in 2014 The last bear market took 53% out of the market over a 15-month period.