"commercial" has different meanings depending on what pit your in. S&P "commercial" will look a lot like Golman, Merrill, etc, whereas in corn/beans etc, "commerical" is more along the lines of hedgers....ala...ADM, Bunge, etc, but the big "players" that come across doing the big volume are simply stated as the clearing firms....ala RJO, Fimat, Newedge, etc.