| Business | Phone |
| Futrex Trading 30 S Wacker Dr 1516, Chicago 60606 | (312) 580-8064 |
| Direct Ally 367 W Chicago Ave, Chicago 60610 | (312) 643-5895 |
| Digital Bandwidth 21 S Clark St 3140, Chicago 60603 | (312) 795-0101 |
| Hemple Rhee America 125 S Wacker Dr, Chicago 60606 | (312) 214-4924 |
| Shepard Intl Futures & Option 30 S Wacker Dr 1418, Chicago 60606 | (312) 648-0275 |
| Pekao Trading Corp 5150 W Belmont Ave, Chicago 60641 | (773) 685-2020 |
| Returns For Us 11161 S Longwood Dr, Chicago 60643 | (773) 779-9350 |
| Rdi Trading 29 E Madison St, Chicago 60602 | (312) 422-0350 |
| Morris Trading 141 W Jackson Blvd 2188, Chicago 60604 | (312) 588-0291 |
| Wolverine Trading Llc 335 S La Salle St, Chicago 60604 | (312) 588-0176 |
| Lightning Trading 440 S La Salle St, Chicago 60605 | (312) 427-0304 |
| Mychaels Trading 440 S La Salle St, Chicago 60605 | (312) 922-0507 |
| Panos Trading 440 S La Salle St, Chicago 60605 | (312) 294-0182 |
| Richard Wheeler Trading 440 S La Salle St, Chicago 60605 | (312) 386-9328 |
| Chicago Fundamental Investors 71 S Wacker Dr, Chicago 60606 | (312) 416-4300 |
| Eckhart Trading Co 300 S Wacker Dr 1080, Chicago 60606 | (312) 765-0565 |
| Infinity Trading 1 S Wacker Dr, Chicago 60606 | (312) 373-9220 |
| Investors Business Daily 200 W Adams St, Chicago 60606 | (312) 704-2330 |
| Nico Trading 311 S Wacker Dr, Chicago 60606 | (312) 253-8000 |
| Pulse Trading Inc 123 N Wacker Dr, Chicago 60606 | (312) 456-0466 |
| Simpson Trading 100 S Wacker Dr 1150, Chicago 60606 | (312) 251-1260 |
| Trading Sb 1 N Wacker Dr 2125, Chicago 60606 | (312) 849-4944 |
| Vision Limited Partnership 125 S Wacker Dr 2000, Chicago 60606 | (312) 849-9377 |
| Speed Trading Group 601 W Harrison St 601, Chicago 60607 | (312) 360-0710 |
| Great West Trading Corp 640 N La Salle Dr, Chicago 60610 | (312) 787-6549 |
| Kingstree Trading 1165 N Clark St, Chicago 60610 | (312) 397-1500 |
| Henderson Global Investors 737 N Michigan Ave, Chicago 60611 | (312) 397-1122 |
| Integra Global Tradings 6020 W Higgins Ave, Chicago 60630 | (773) 774-5360 |
| Kylin Trading 4222 S Pulaski Rd, Chicago 60632 | (773) 927-8098 |
| National Investors Relations 6211 N Campbell Ave, Chicago 60659 | (773) 262-1090 |
| West Monroe Fund Investors Llc 555 W Monroe St, Chicago 60661 | (312) 930-1457 |