We present evidence that market sentiment is positively priced in the cross-section of stock returns in low-sentiment periods. We estimate individual stock exposure to market sentiment and find that, in periods of low market sentiment, stocks in the highest sentiment beta quintile generate a 0.66% higher ex-post monthly return, on average, relative to stocks in the lowest sentiment beta quintile. However, this return spread is not significant in medium- or high-sentiment periods. This finding is consistent with the argument that overpricing in high-sentiment periods is more prevalent than underpricing in low-sentiment periods due to short-sale constraints.