| Business | Phone |
| C F Financial Svc Inc 823 W Jericho Tpke # C, Smithtown 11787 | (631) 543-0458 |
| Charles Schwab & Co 180 E Main St # 210, Smithtown 11787 | (631) 000-1111 |
| Charles Schwab & Co 200 Broadhollow Rd # 302, Smithtown 11787 | (631) 000-1111 |
| Merrill Lynch 50 Route 111 # 100, Smithtown 11787 | (631) 361-3200 |
| Network Capital Svc Inc 811 W Jericho Tpke # 103, Smithtown 11787 | (631) 366-1999 |
| Electronic Trading Group 180 E Main St # 303a, Smithtown 11787 | (631) 724-6010 |
| Schneider Securities 732 Smithtown Byp, Smithtown 11787 | (631) 382-5013 |
| Timecapital Securities Corp 51 E Main St, Smithtown 11787 | (631) 366-0070 |
| Ubs Financial Svc 285 Middle Country Rd, Smithtown 11787 | (631) 382-3820 |