Mesa Laboratories Inc
MLAB- Exchange
- Nasdaq
- Industry
- Industrial Instruments For Measurement, Display, and Control
- SEC CIK
- 0000724004
In the last 90 days, Mesa Laboratories Inc insiders filed 2 open-market purchases and 1 sale; 159 institutions reported holding it in 13F filings for Q2 2026, worth $500.8M in total; no superinvestor holds it.
13F holders, Q3 2025
Institutional positions in Mesa Laboratories Inc as of Sep 30, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 141
- −13 vs. Q2 2025
- Shares held
- 4.98M
- −206.3K (−4.0%) vs. Q2 2025
- Total value
- $334.0M
- −$155.1M (−31.7%) vs. Q2 2025
- New holders
- 26
- 41 more added
- Sold out
- 39
- 54 more reduced
1 institution that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting MLAB on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 159 | $500.8M |
| Q1 2026 | 161 | $426.6M |
| Q4 2025 | 159 | $372.5M |
| Q3 2025 | 141 | $334.0M |
| Q2 2025 | 155 | $489.1M |
| Q1 2025 | 151 | $613.4M |
| Q4 2024 | 157 | $673.0M |
| Q3 2024 | 166 | $633.6M |
| Q2 2024 | 155 | $424.4M |
| Q1 2024 | 155 | $534.3M |
| Q4 2023 | 158 | $507.5M |
| Q3 2023 | 154 | $515.1M |
| Q2 2023 | 161 | $630.0M |
| Q1 2023 | 160 | $877.7M |
| Q4 2022 | 160 | $846.5M |
| Q3 2022 | 164 | $680.9M |
| Q2 2022 | 175 | $1.00B |
| Q1 2022 | 175 | $1.24B |
| Q4 2021 | 178 | $1.57B |
| Q3 2021 | 172 | $1.44B |
| Q2 2021 | 159 | $1.28B |
| Q1 2021 | 173 | $1.12B |
Institutions, Q3 2025
Shares, value and share of portfolio for each institution holding Mesa Laboratories Inc; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Royal Bank of Canada | 26,882 | $1.80M | 0.00% | −10,396−27.9% | Reduced |
| Qube Research & Technologies Ltd | 30,725 | $2.06M | 0.00% | +10,827+54.4% | Added |
| AQR Capital Management LLC | 32,639 | $2.19M | 0.00% | +24,912+322.4% | Added |
| D. E. Shaw & Co., Inc. | 32,811 | $2.20M | 0.00% | +24,146+278.7% | Added |
| Bank of New York Mellon Corp | 33,683 | $2.26M | 0.00% | −19,814−37.0% | Reduced |
| Monimus Capital Management, LP | 33,744 | $2.26M | 1.68% | +33,744 | New |
| Citadel Advisors LLC | 34,178 | $2.29M | 0.00% | +7,305+27.2% | Added |
| Cubist Systematic Strategies, LLC | 35,988 | $2.41M | 0.03% | +35,988 | New |
| Jane Street Group, LLC | 38,227 | $2.56M | 0.00% | +24,442+177.3% | Added |
| Ameriprise Financial Inc | 39,095 | $2.62M | 0.00% | −34,418−46.8% | Reduced |
| Goldman Sachs Group Inc | 41,781 | $2.80M | 0.00% | +12,355+42.0% | Added |
| Comerica Bank | 42,388 | $2.84M | 0.01% | −1,875−4.2% | Reduced |
| Bank of America Corp | 47,099 | $3.16M | 0.00% | −17,829−27.5% | Reduced |
| Raymond James Financial Inc | 47,402 | $3.18M | 0.00% | −138,153−74.5% | Reduced |
| Herald Investment Management Ltd | 50,000 | $3.34M | 0.44% | +37,500+300.0% | Added |
| Gabelli Funds LLC | 53,974 | $3.62M | 0.02% | +28,818+114.6% | Added |
| Charles Schwab Investment Management Inc | 54,605 | $3.66M | 0.00% | −7,159−11.6% | Reduced |
| Mason Capital Management LLC | 70,300 | $4.71M | 0.96% | +70,300 | New |
| Northern Trust Corp | 71,966 | $4.82M | 0.00% | −20,766−22.4% | Reduced |
| Meros Investment Management, LP | 76,477 | $5.12M | 2.19% | +39,859+108.9% | Added |
| Roubaix Capital, LLC | 76,657 | $5.14M | 2.39% | +76,657 | New |
| Crawford Investment Counsel Inc | 82,467 | $5.53M | 0.09% | +30,723+59.4% | Added |
| Russell Investments Group, Ltd. | 99,187 | $6.65M | 0.01% | +19,711+24.8% | Added |
| Boston Partners | 114,357 | $7.66M | 0.01% | +108,936+2,009.5% | Added |
| Dimensional Fund Advisors LP | 116,772 | $7.82M | 0.00% | +1,488+1.3% | Added |
| State Street Corp | 118,948 | $7.97M | 0.00% | −92,887−43.8% | Reduced |
| Kennedy Capital Management, Inc. | 121,546 | $8.14M | 0.18% | +31,067+34.3% | Added |
| Diamond Hill Capital Management Inc | 123,381 | $8.27M | 0.04% | +84,582+218.0% | Added |
| Select Equity Group, L.P. | 126,715 | $8.49M | 0.04% | +24,517+24.0% | Added |
| Geode Capital Management, LLC | 127,860 | $8.57M | 0.00% | −10,909−7.9% | Reduced |
| Millennium Management LLC | 133,817 | $8.97M | 0.01% | +76,107+131.9% | Added |
| Kent Lake PR LLC | 134,516 | $9.01M | 4.61% | +134,516 | New |
| Janus Henderson Group PLC | 145,654 | $9.76M | 0.00% | +32,369+28.6% | Added |
| Royce & Associates LP | 148,558 | $9.95M | 0.10% | −99,048−40.0% | Reduced |
| Simcoe Capital Management, LLC | 190,929 | $12.8M | 1.85% | +190,929 | New |
| Geneva Capital Management LLC | 191,386 | $12.8M | 0.22% | −7,706−3.9% | Reduced |
| Ranger Investment Management, L.P. | 209,700 | $14.1M | 0.98% | −4,590−2.1% | Reduced |
| Morgan Stanley | 254,974 | $17.1M | 0.00% | +36,178+16.5% | Added |
| Vanguard Group Inc | 321,717 | $21.6M | 0.00% | −67,692−17.4% | Reduced |
| BlackRock, Inc. | 388,795 | $26.1M | 0.00% | −402,332−50.9% | Reduced |
| Conestoga Capital Advisors, LLC | 426,457 | $28.6M | 0.46% | −139,693−24.7% | Reduced |
| Wellington Management Group LLP | 0 | $0 | 0.00% | −22,471−100.0% | Sold out |
| Public Sector Pension Investment Board | 0 | $0 | 0.00% | −18,528−100.0% | Sold out |
| UBS Asset Management Americas Inc | 0 | $0 | 0.00% | −17,403−100.0% | Sold out |
| Swiss National Bank | 0 | $0 | 0.00% | −10,402−100.0% | Sold out |
| Man Group plc | 0 | $0 | 0.00% | −7,869−100.0% | Sold out |
| Great West Life Assurance Co | 0 | $0 | 0.00% | −6,927−100.0% | Sold out |
| Prudential Financial Inc | 0 | $0 | 0.00% | −5,658−100.0% | Sold out |
| RSM US Wealth Management LLC | 0 | $0 | 0.00% | −4,971−100.0% | Sold out |
| Dynamic Technology Lab Private Ltd | 0 | $0 | 0.00% | −4,801−100.0% | Sold out |
| Thrivent Financial for Lutherans | 0 | $0 | 0.00% | −3,996−100.0% | Sold out |
| Franklin Resources Inc | 0 | $0 | 0.00% | −3,476−100.0% | Sold out |
| Illinois Municipal Retirement Fund | 0 | $0 | 0.00% | −2,884−100.0% | Sold out |
| Wiley Bros.-Aintree Capital, LLC | 0 | $0 | 0.00% | −2,664−100.0% | Sold out |
| Intech Investment Management LLC | 0 | $0 | 0.00% | −2,593−100.0% | Sold out |
| State Board of Administration of Florida Retirement System | 0 | $0 | 0.00% | −2,564−100.0% | Sold out |
| Los Angeles Capital Management LLC | 0 | $0 | 0.00% | −2,504−100.0% | Sold out |
| Louisiana State Employees Retirement System | 0 | $0 | 0.00% | −2,500−100.0% | Sold out |
| Cambridge Investment Research Advisors, Inc. | 0 | $0 | 0.00% | −2,252−100.0% | Sold out |
| Virtu Financial LLC | 0 | $0 | 0.00% | −2,226−100.0% | Sold out |
| MQS Management LLC | 0 | $0 | 0.00% | −2,194−100.0% | Sold out |
| Teachers Retirement System of the State of Kentucky | 0 | $0 | 0.00% | −1,613−100.0% | Sold out |
| Pacer Advisors, Inc. | 0 | $0 | 0.00% | −1,354−100.0% | Sold out |
| Oregon Public Employees Retirement Fund | 0 | $0 | 0.00% | −1,278−100.0% | Sold out |
| New York State Teachers Retirement System | 0 | $0 | 0.00% | −1,159−100.0% | Sold out |
| KLP Kapitalforvaltning AS | 0 | $0 | 0.00% | −1,000−100.0% | Sold out |
| Bank of Montreal | 0 | $0 | 0.00% | −900−100.0% | Sold out |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0 | $0 | 0.00% | −148−100.0% | Sold out |
| Skopos Labs, Inc. | 0 | $0 | 0.00% | −96−100.0% | Sold out |
| Annis Gardner Whiting Capital Advisors, LLC | 0 | $0 | 0.00% | −94−100.0% | Sold out |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 0 | $0 | 0.00% | −62−100.0% | Sold out |
| Massmutual Trust Co FSB | 0 | $0 | 0.00% | −46−100.0% | Sold out |
| Caitong International Asset Management Co., Ltd | 0 | $0 | 0.00% | −31−100.0% | Sold out |
| Umb Bank N A | 0 | $0 | 0.00% | −10−100.0% | Sold out |
| Beacon Capital Management, LLC | 0 | $0 | 0.00% | −6−100.0% | Sold out |
| Larson Financial Group LLC | 0 | $0 | 0.00% | −5−100.0% | Sold out |
| Farmers & Merchants Investments Inc | 0 | $0 | 0.00% | −4−100.0% | Sold out |
| Parkside Financial Bank & Trust | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| TFC Financial Management | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| Twin Peaks Wealth Advisors, LLC | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| First Horizon Advisors, Inc. | – | – | – | – | Not filed |