Quote from Pyramid20:
Here is my assessment of the groups that seem to have come up most often on this forum. This is based on my impression of both the opportunity for success/edge/knowledge and how well-capitalized I perceive the group to be. Of course there are numerous smaller groups that are equally as good and perhaps as large but the ones below have come up alot on past threads here. These are mostly in chicago and mostly futures/equity options.
Top Tier:
-Susquehanna
-Chicago Trading Company
-Infinium
-Transmarket
-Peak 6
-DRW
-Allston
-Eldorado
-GETCO
-Jump Trading
-Wolverine
2nd Tier:
-Marex (formerly refco)
-FNYS
-Geneva Trading
-Gelber Group
-Breakwater
3rd Tier:
-International Trading Group/DE Trading
-GHCO
-Kingstree Trading
-M&N Trading
-SMW
-Marquette
-Harrison Trading
-League Trading
-Tradelink/TradeGroup
TradeGroup was shut down a year ago.