A share/stock that is most active by value indicates that the stock is been traded with the highest turnover . However, most active by value stocks must be thoroughly analysed before investing i.e an investor must look into the fundamentals, financials and technical charts before investing. Investing in active by value stocks may sound like a potential opportunity. At the same time you must evaluate the risk associated with it as well. Only considering a day's turnover price may not be a good investing factor.