Who Owns Mesa Laboratories Inc (MLAB)? -- Institutional Holders (2026-06-30)
173 institutions reported holding $506.0M of Mesa Laboratories Inc (MLAB) in SEC 13F filings for 2026-06-30. Largest institutional holders: Long Path Partners LP ($47.5M), BlackRock, Inc. ($43.9M), VANGUARD GROUP INC ($34.7M), Boston Partners ($26.4M), AQR CAPITAL MANAGEMENT LLC ($20.3M). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|
| 1 | Long Path Partners LP | $47.5M | 477,126 | Added |
| 2 | BlackRock, Inc. | $43.9M | 440,552 | Added |
| 3 | VANGUARD GROUP INC | $34.7M | 348,335 | Added |
| 4 | Boston Partners | $26.4M | 265,149 | Trimmed |
| 5 | AQR CAPITAL MANAGEMENT LLC | $20.3M | 203,739 | Added |
| 6 | Ranger Investment Management, L.P. | $17.3M | 173,988 | Trimmed |
| 7 | MORGAN STANLEY | $15.6M | 156,979 | Trimmed |
| 8 | DIAMOND HILL CAPITAL MANAGEMENT INC | $15.5M | 155,771 | Added |
| 9 | RAYMOND JAMES FINANCIAL INC | $14.9M | 149,937 | Added |
| 10 | DIMENSIONAL FUND ADVISORS LP | $14.8M | 148,395 | Added |
| 11 | GEODE CAPITAL MANAGEMENT, LLC | $13.9M | 139,682 | Added |
| 12 | KENNEDY CAPITAL MANAGEMENT LLC | $13.8M | 138,301 | Trimmed |
| 13 | JACOBS LEVY EQUITY MANAGEMENT, INC | $13.0M | 130,838 | Added |
| 14 | STATE STREET CORP | $12.4M | 124,292 | Added |
| 15 | Russell Investments Group, Ltd. | $12.1M | 121,845 | Trimmed |
| 16 | WASATCH ADVISORS LP | $11.5M | 115,668 | Added |
| 17 | ROYCE & ASSOCIATES LP | $11.3M | 113,395 | Trimmed |
| 18 | CRAWFORD INVESTMENT COUNSEL INC | $9.8M | 98,805 | Added |
| 19 | FMR LLC | $8.8M | 88,857 | Added |
| 20 | D. E. Shaw & Co., Inc. | $8.1M | 81,755 | Added |
| 21 | JANE STREET GROUP, LLC | $7.1M | 71,580 | New |
| 22 | Meros Investment Management, LP | $6.8M | 67,962 | Trimmed |
| 23 | NORTHERN TRUST CORP | $6.5M | 65,745 | Trimmed |
| 24 | GOLDMAN SACHS GROUP INC | $6.4M | 64,322 | Trimmed |
| 25 | GABELLI FUNDS LLC | $6.2M | 62,499 | Hold |
Source: SEC Form 13F filings · as of 2026-06-30