MLAB Mesa Laboratories, Inc.
Mesa Laboratories, Inc. (MLAB) Institutional Ownership
What the institutions did with MLAB last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
Sign in or subscribeOwnership map
Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| Long Path Partners LP | 477.1K | 9.5% |
| BlackRock, Inc. | 440.6K | 8.8% |
| Boston Partners | 265.1K | 5.3% |
| VANGUARD CAPITAL MANAGEMENT LLC | 237.5K | 4.7% |
| AQR CAPITAL MANAGEMENT LLC | 203.7K | 4.0% |
| Ranger Investment Management, L.P. | 174.0K | 3.5% |
| MORGAN STANLEY | 157.0K | 3.1% |
| DIAMOND HILL CAPITAL MANAGEMENT INC | 155.8K | 3.1% |
| RAYMOND JAMES FINANCIAL INC | 149.9K | 3.0% |
| DIMENSIONAL FUND ADVISORS LP | 148.4K | 2.9% |
| GEODE CAPITAL MANAGEMENT, LLC | 139.7K | 2.8% |
| KENNEDY CAPITAL MANAGEMENT LLC | 138.3K | 2.7% |
| JACOBS LEVY EQUITY MANAGEMENT, INC | 130.8K | 2.6% |
| STATE STREET CORP | 124.3K | 2.5% |
| Russell Investments Group, Ltd. | 121.8K | 2.4% |
| WASATCH ADVISORS LP | 115.7K | 2.3% |
| ROYCE & ASSOCIATES LP | 113.4K | 2.3% |
| CRAWFORD INVESTMENT COUNSEL INC | 98.8K | 2.0% |
| FMR LLC | 88.9K | 1.8% |
| D. E. Shaw & Co., Inc. | 81.8K | 1.6% |
| JANE STREET GROUP, LLC | 71.6K | 1.4% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 69.4K | 1.4% |
| Meros Investment Management, LP | 68.0K | 1.4% |
| NORTHERN TRUST CORP | 65.7K | 1.3% |
| GOLDMAN SACHS GROUP INC | 64.3K | 1.3% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| Select Equity Group, L.P. | Sold Out | 235.9K | 0 | -235.9K |
| JACOBS LEVY EQUITY MANAGEMENT, INC | Increased | 44.4K | 130.8K | +86.4K |
| FMR LLC | Increased | 6.5K | 88.9K | +82.4K |
| Roubaix Capital, LLC | Sold Out | 72.1K | 0 | -72.1K |
| JANE STREET GROUP, LLC | New | 0 | 71.6K | +71.6K |
| Long Path Partners LP | Increased | 405.6K | 477.1K | +71.5K |
| WASATCH ADVISORS LP | Increased | 51.2K | 115.7K | +64.4K |
| ROYCE & ASSOCIATES LP | Reduced | 161.2K | 113.4K | -47.8K |
| BlackRock, Inc. | Increased | 393.9K | 440.6K | +46.7K |
| MONIMUS CAPITAL MANAGEMENT, LP | Reduced | 101.3K | 55.3K | -45.9K |
| Qube Research & Technologies Ltd | New | 0 | 37.4K | +37.4K |
| AQR CAPITAL MANAGEMENT LLC | Increased | 170.6K | 203.7K | +33.2K |
| Ranger Investment Management, L.P. | Reduced | 202.9K | 174.0K | -28.9K |
| CITADEL ADVISORS LLC | Increased | 8.4K | 35.9K | +27.5K |
| D. E. Shaw & Co., Inc. | Increased | 54.6K | 81.8K | +27.2K |
| RAYMOND JAMES FINANCIAL INC | Increased | 122.9K | 149.9K | +27.0K |
| DIMENSIONAL FUND ADVISORS LP | Increased | 124.6K | 148.4K | +23.8K |
| Man Group plc | Increased | 2.5K | 24.1K | +21.6K |
| LAZARD ASSET MANAGEMENT LLC | Sold Out | 20.3K | 0 | -20.3K |
| Trexquant Investment LP | Sold Out | 18.7K | 0 | -18.7K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 52.6K | 69.4K | +16.8K |
| NFJ INVESTMENT GROUP, LLC | New | 0 | 14.3K | +14.3K |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO | Sold Out | 13.7K | 0 | -13.7K |
| Russell Investments Group, Ltd. | Reduced | 135.1K | 121.8K | -13.2K |
| TWO SIGMA INVESTMENTS, LP | Increased | 16.4K | 29.2K | +12.9K |
| WELLS FARGO & COMPANY/MN | Increased | 1.9K | 14.4K | +12.5K |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 128.0K | 139.7K | +11.7K |
| XTX Topco Ltd | Increased | 6.2K | 17.5K | +11.3K |
| Engineers Gate Manager LP | Increased | 3.8K | 14.7K | +11.0K |
| Connor, Clark & Lunn Investment Management Ltd. | Sold Out | 9.5K | 0 | -9.5K |
| MARSHALL WACE, LLP | New | 0 | 8.7K | +8.7K |
| CM WEALTH ADVISORS LLC | New | 0 | 8.3K | +8.3K |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | Reduced | 62.4K | 54.5K | -8.0K |
| BANK OF AMERICA CORP /DE/ | Reduced | 57.9K | 50.0K | -7.9K |
| HERALD INVESTMENT MANAGEMENT Ltd | Reduced | 50.0K | 42.5K | -7.5K |
| LOS ANGELES CAPITAL MANAGEMENT LLC | Increased | 34 | 7.4K | +7.4K |
| AMERICAN CENTURY COMPANIES INC | Increased | 13.4K | 20.4K | +7.0K |
| TUDOR INVESTMENT CORP ET AL | Sold Out | 6.9K | 0 | -6.9K |
| Numerai GP LLC | Increased | 11.0K | 17.8K | +6.8K |
| CenterBook Partners LP | Reduced | 14.2K | 7.7K | -6.5K |
| GOLDMAN SACHS GROUP INC | Reduced | 70.6K | 64.3K | -6.3K |
| Point72 Asset Management, L.P. | Increased | 16.3K | 22.5K | +6.2K |
| Mariner, LLC | Increased | 9.0K | 14.4K | +5.4K |
| MORGAN STANLEY | Reduced | 162.1K | 157.0K | -5.1K |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 232.6K | 237.5K | +4.8K |
| RICE HALL JAMES & ASSOCIATES, LLC | Increased | 14.2K | 19.0K | +4.7K |
| Brevan Howard Capital Management LP | New | 0 | 4.5K | +4.5K |
| UBS Group AG | Reduced | 12.0K | 7.8K | -4.3K |
| Magnetar Financial LLC | New | 0 | 4.1K | +4.1K |
| INCEPTIONR LLC | Sold Out | 4.1K | 0 | -4.1K |
| KENNEDY CAPITAL MANAGEMENT LLC | Reduced | 142.3K | 138.3K | -4.0K |
| IEQ CAPITAL, LLC | Increased | 9.7K | 13.6K | +3.9K |
| ACADIAN ASSET MANAGEMENT LLC | Sold Out | 3.9K | 0 | -3.9K |
| Nuveen, LLC | Increased | 10.1K | 13.9K | +3.8K |
| STRS OHIO | New | 0 | 3.7K | +3.7K |
| Y-Intercept (Hong Kong) Ltd | Increased | 6.3K | 10.0K | +3.7K |
| MERCER GLOBAL ADVISORS INC /ADV | Increased | 3.1K | 6.8K | +3.7K |
| Boston Partners | Reduced | 268.7K | 265.1K | -3.6K |
| NORTHERN TRUST CORP | Reduced | 69.3K | 65.7K | -3.5K |
| EntryPoint Capital, LLC | Sold Out | 3.5K | 0 | -3.5K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.