S&P 500 stocks with abnormal volume

Volume is a measurement of how much a particular stock (or index) is trading. If investors are buying and selling a lot of shares, a stock has high volume. If they aren't doing a lot of buying and selling, then low volume.

By taking a stock's current volume and dividing it by average volume, we can get an indicator that highlights which stocks are making abormal moves. Either due to high trading volume or a relative lack of trading volume.