AAII sentiment survey

What the weekly AAII investor sentiment survey measures, its long-run averages, historical extremes, and how contrarian investors read bearish readings.

What it is

Each week since 1987, the American Association of Individual Investors has asked members whether they expect stocks to rise, stay flat or fall over the next six months. The results are published as bullish, neutral and bearish percentages.

Long-run averages

Average
Bullish About 37.5%
Neutral About 31.5%
Bearish About 31.0%
Bull-bear spread About +6.5 points

Reading it as a contrarian

When most individual investors are bearish, much of the selling has often already happened. Extreme bearishness has frequently lined up with market bottoms, and extreme bullishness with tops.

Date Bearish What followed
March 2000 17% Dot-com peak; a long bear market
February 2003 58% Near the bear market bottom
March 2009 70% The financial crisis bottom
December 2018 50% A sharp low, then recovery
September 2022 61% Near the 2022 lows

Combining it with the VIX

Readings are strongest together: high bearishness plus a high The VIX (volatility index) marks real fear, while low bearishness plus a low VIX marks complacency.

Limits

It is a small, self-selected survey. Extremes can last for weeks and are not precise timing signals.

See also

Last updated September 30, 2026. Education only, not investment advice.