| Name | Category | City | State |
| 1 Shulam Financial Services | Investment Advisory Services | Peabody | MA |
| 1 World Business And Financial Group | Investment Advisory Services | White Plains | NY |
| 1031 America | Investment Advisory Services | Westport | CT |
| 1031 Investment Co | Investment Advisory Services | Saint Louis | MO |
| 123TD.Com | Investment Advisory Services | Westminster | CA |
| 1334 Cambridge St Realty | Investment Advisory Services | Cambridge | MA |
| 1620 Investment Advisors | Investment Advisory Services | Plymouth | MA |
| 1717 Capital Management | Investment Advisory Services | New York | NY |
| 1717 Capital Management Company | Investment Advisory Services | Richmond | VA |
| 1861 Capital Management Llc | Investment Advisory Services | New York | NY |
| 1POINT Administrative Services Inc | Investment Advisory Services | Nashville | TN |
| 1st Commercial Funding Inc | Investment Advisory Services | Beverly Hills | CA |
| 1st National Bank & Trust - 1St National Investment Services- Trust & Financial Plan | Investment Advisory Services | Bradenton | FL |
| 2 The Limit Inc | Investment Advisory Services | Lake Elsinore | CA |
| 200 5th Club For Events After April 2004 | Investment Advisory Services | New York | NY |
| 2020 Advisors | Investment Advisory Services | Oak Brook | IL |
| 218 | Investment Advisory Services | Naperville | IL |
| 21st Century Equity Advisors Corporation | Investment Advisory Services | Columbus | OH |
| 21st Century Wealth Management | Investment Advisory Services | York | PA |
| 2323 Office Centre | Investment Advisory Services | Milwaukee | WI |
| 3 Wall Investments | Investment Advisory Services | Los Angeles | CA |
| 3035 White Plains Road Realty Corporation | Investment Advisory Services | Bronx | NY |
| 3555 Timmons Investor | Investment Advisory Services | Houston | TX |
| 3G Capital Management | Investment Advisory Services | Saint Louis | MO |
| 4 H Investment Mutual | Investment Advisory Services | Virginia Beach | VA |