Perception is currently pushing the major indexes higher.Bullish sentiment is 66% and doesnt show any signs of weakening in the near term.Until that bullish sentiment subsides ,shorting to the extreme could be elevating your risk level to the extreme.Throw out the technical and historical data,charts and any other indicators you may be using,because in this respect,perception and perception alone will rule the major indexes.I would equate your position to fighting the fed,its like beating your head against a brick wall and in all likelyhood you'll loose because the wall rarely looses.Brokerboy made an excellent point ,in just catching part of the move.Its been my own experience that trying to time a trend shift is next to impossible and have probably suffered my worst losses over the past 20 plus years in trying to do so.Make sure you have a bulletproof exit plan.I just had my best year ever and did it by following trends already in place.You can make very good money without exposing yourself to so much risk.Last but not least,always remember that greed is a double edged sword,it can make all your dreams come true,or it can just as easily become your worst nightmare. Goodluck