It has become public knowledge in the trading sphere that high frequency trading exist in the capital markets of the world.
According to the TABB Group: “TABB Group estimates that high-frequency trading accounts for 61 percent of U.S. equity share volume (remember to double-count average daily shares!) and generates $8 billion per year in trading profits”.
The question becomes, what is it for the futures market? In 2010, the Aite Group has estimated this number to be 25% of trading volume, and expect this number to grow.