| Business | Phone |
| Argo Futures Group Inc 1285 Old River Rd, Cleveland 44113 | (216) 621-9600 |
| Argo Futures Group Inc 30050 Chagrin Blvd, Cleveland 44124 | (216) 593-7700 |
| Byrne Investment Svc 4526 W 210th St, Cleveland 44126 | (440) 356-7080 |
| Carnegie Trading 1701 E 12th St, Cleveland 44114 | (216) 861-2290 |
| R C Futures 3673 Traver Rd, Cleveland 44122 | (216) 751-0060 |
| Integrated Commodities 18624 Detroit Ave, Cleveland 44107 | (216) 226-0449 |