I think you are referring short-term trading...

  To make money, all players must be traders.

     A long-term trader maybe trades once a year,

       or once in 5 years, or even once in ten years.

         Short-term traders trade for varying shorter periods.

            Since they can stand to lose more money,

              long-term traders take much bigger risks than shorter-term ones,

                although their potential gains may be bigger.

                  Thus, it is not a matter of trading frequency,

                     but the level of risk  that differentiates the two categories of players...

Richman, how do you detect the BBs is buying/selling from your system?

Thanks.