The American Association of Individual Investors reported investor bullish sentiment fell over eight percentage points this week. The AAII Investor Sentiment Survey measures the percentage of individual investors who are bullish, bearish, and neutral on the stock market for the next six months. The bullish sentiment reading of 22.19% was the lowest level since August 26, 2010 when the bullish reading was reported at 20.74%. In August of 2010 the S&P 500 Index was trading at 1,055.33. In the subsequent 12-months, the S&P rose 9.8% to 1,159.27. This one behavioral measures tends to be a contrarian indicator.