List of institutional investors who are active in the last 9 months.
| # | Name | Latest Filing Quarter | Latest Holding Count | Latest AUM |
| 4501 | Lynx Investment Advisory | 2024Q4 | 146 | $146.6M |
| 4502 | Lynx1 Capital Management LP | 2025Q1 | 14 | $279.24M |
| 4503 | LYRICAL ASSET MANAGEMENT LP | 2025Q1 | 38 | $6.58B |
| 4504 | M & L Capital Management Ltd | 2025Q1 | 18 | $333.98M |
| 4505 | M Financial Asset Management Inc. | 2024Q4 | 9 | $20.65M |
| 4506 | M Holdings Securities Inc. | 2025Q1 | 135 | $575.41M |
| 4507 | M Wealth Management LLC | 2025Q1 | 45 | $91.11M |
| 4508 | M&G PLC | 2025Q1 | 408 | $15.3B |
| 4509 | M&T BANK CORP | 2025Q1 | 1487 | $27.31B |
| 4510 | M. Kraus & Co | 2025Q1 | 79 | $328.83M |
| 4511 | M. Kulyk & Associates LLC | 2025Q1 | 98 | $368.97M |
| 4512 | M.D. Sass LLC | 2025Q1 | 32 | $1.14B |
| 4513 | M.E. ALLISON & CO. INC. | 2025Q1 | 152 | $100.72M |
| 4514 | M1 Capital Management LLC | 2025Q1 | 89 | $159.92M |
| 4515 | M28 Capital Management LP | 2025Q1 | 11 | $72.98M |
| 4516 | M3 Advisory Group LLC | 2025Q1 | 131 | $123.84M |
| 4517 | M3F Inc. | 2025Q1 | 31 | $363.85M |
| 4518 | MA Private Wealth | 2025Q1 | 72 | $519.24M |
| 4519 | Mach-1 Financial Group LLC | 2025Q1 | 234 | $313.9M |
| 4520 | Machina Capital S.A.S. | 2025Q1 | 275 | $337.08M |
| 4521 | MACKAY SHIELDS LLC | 2025Q1 | 54 | $671.95M |
| 4522 | MACKENZIE FINANCIAL CORP | 2025Q1 | 1651 | $69.94B |
| 4523 | Macquarie Group Limited | 2025Q1 | 1637 | $76.38B |
| 4524 | MACROVIEW INVESTMENT MANAGEMENT LLC | 2025Q1 | 82 | $105.64M |
| 4525 | MAD RIVER INVESTORS | 2025Q1 | 23 | $232.37M |
| 4526 | Madden Advisory Services Inc. | 2025Q1 | 91 | $181.99M |
| 4527 | MADDEN SECURITIES Corp | 2025Q1 | 114 | $256.78M |
| 4528 | Mader & Shannon Wealth Management Inc. | 2025Q1 | 19 | $147.74M |
| 4529 | Madison Asset Management LLC | 2025Q1 | 349 | $8.98B |
| 4530 | Madison Avenue Partners, LP | 2025Q1 | 22 | $1.18B |
| 4531 | MADISON DEARBORN PARTNERS LLC | 2025Q1 | 0 | $0 |
| 4532 | Madison International Realty Holdings, LLC | 2025Q1 | 2 | $170.64M |
| 4533 | Madison Investment Advisors LLC | 2024Q4 | 335 | $8.87B |
| 4534 | Madison Park Capital Advisors LLC | 2025Q1 | 58 | $113.99M |
| 4535 | Madison Wealth Partners Inc | 2025Q1 | 152 | $396.54M |
| 4536 | Madrona Financial Services LLC | 2025Q1 | 106 | $362.61M |
| 4537 | Madrona Venture Group LLC | 2025Q1 | 3 | $28.49M |
| 4538 | MADRONE ADVISORS LLC | 2025Q1 | 6 | $597M |
| 4539 | Maestria Partners LLC | 2025Q1 | 14 | $236.66M |
| 4540 | Magellan Asset Management Ltd | 2025Q1 | 87 | $8.22B |
| 4541 | Magma Venture Partners General Partner Ltd. | 2025Q1 | 3 | $96.15M |
| 4542 | Magnetar Financial LLC | 2025Q1 | 643 | $6.52B |
| 4543 | Magnitude Capital LLC | 2025Q1 | 1 | $312.96M |
| 4544 | MAGNOLIA CAPITAL ADVISORS LLC | 2025Q1 | 221 | $346.74M |
| 4545 | MAGNOLIA CAPITAL MANAGEMENT LTD | 2025Q1 | 72 | $116.6M |
| 4546 | MAGNOLIA GROUP LLC | 2025Q1 | 9 | $589.89M |
| 4547 | Magnolia Private Wealth LLC | 2025Q1 | 109 | $118.19M |
| 4548 | Magnolia Wealth Management LLC | 2025Q1 | 11 | $94.36M |
| 4549 | Magnus Financial Group LLC | 2025Q1 | 350 | $996.55M |
| 4550 | MAI Capital Management | 2025Q1 | 3182 | $12.53B |