The Nasdaq (-1.91%) is now down close to two percent on the day, while the S&P 500(-1.08%), Russell 2000 (-0.79%), and Dow (-0.32%) are hitting day lows. 55.3% (3,076) issues are now in decline against 41.2% (2,291) advancing. With that, let's turn our attention to the top and bottom 20 stocks ...