This paper examines a novel pattern of option return predictability. Specifically, we find option trading volume negatively and significantly predicts the cross-section of delta-hedged option returns. Our portfolio strategies of option trading volume yield significant returns in options across different moneyness and time to maturity. Furthermore, the evidence shows that the market capitalization and idiosyncratic volatility are able to explain the predictability of option trading volume on option returns. Our results are robust to alternative measures of option returns and option subsamples.