- Ameritrade Inc
- Argus Research Corp
- Barron Marshall & Kamen Co Inc
- BCS Brokerage Inc
- Chicago Board Option Exch Inc
- Cohen Specialists LLC
- Cuttone & Co
- E A Sheslow Co
- Fargenson Co Inc
- Fargenson Co Inc
- Fargenson Co Inc
- Garban Corporates Inc
- Garban Corporates Inc
- Griswold Co
- Griswold Co
- Griswold Co
- Group One Trading LTD
- Group One Trading LTD
- Group One Trading LTD
- Inet
- Inet
- Kepmen Capital
- Kepmen Capital
- Kingsley Boye & Southwood Inc
- Kingsley Boye & Southwood Inc
- Lasher Group Inc
- Lasher Group Inc
- Lee Securities
- Lee Securities
- Lombardi & Co
- Lombardi & Co
- M H Meyerson & Co
- M H Meyerson & Co
- MAI North America
- MAI North America
- Market Vision
- Market Vision
- Mc Ginn Smith & Co
- Meyers Associates LP
- Meyers Associates LP
