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, Q1 2026
Institutional positions in Mesa Laboratories Inc as of Mar 31, 2026. 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
- 161
- +6 vs. Q4 2025
- Shares held
- 4.83M
- +405.3K (+9.2%) vs. Q4 2025
- Total value
- $426.6M
- +$79.4M (+22.9%) vs. Q4 2025
- New holders
- 26
- 61 more added
- Sold out
- 20
- 42 more reduced
4 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2026
Shares, value and share of portfolio for each institution holding Mesa Laboratories Inc; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Envestnet Asset Management Inc | 8,624 | $762.5K | 0.00% | +1,692+24.4% | Added |
| Quadrature Capital Ltd | 8,693 | $768.6K | 0.01% | −4,835−35.7% | Reduced |
| Mariner, LLC | 8,966 | $792.6K | 0.00% | +5,653+170.6% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 9,517 | $841.5K | 0.00% | −4,852−33.8% | Reduced |
| Ieq Capital, LLC | 9,658 | $854.0K | 0.00% | +9,658 | New |
| Nuveen, LLC | 10,139 | $896.5K | 0.00% | +61+0.6% | Added |
| Globeflex Capital L P | 10,838 | $958.3K | 0.15% | +10,838 | New |
| Numerai GP LLC | 10,952 | $968.4K | 0.10% | −3,957−26.5% | Reduced |
| Principal Financial Group Inc | 11,088 | $980.4K | 0.00% | −3,804−25.5% | Reduced |
| Stifel Financial Corp | 11,363 | $1.00M | 0.00% | +88+0.8% | Added |
| UBS Group AG | 12,046 | $1.07M | 0.00% | +3,221+36.5% | Added |
| Royal Bank of Canada | 13,275 | $1.17M | 0.00% | +7,818+143.3% | Added |
| American Century Companies Inc | 13,373 | $1.18M | 0.00% | −97−0.7% | Reduced |
| Public Employees Retirement System of Ohio | 13,722 | $1.21M | 0.00% | 00.0% | Unchanged |
| Invesco Ltd. | 14,103 | $1.25M | 0.00% | +1,258+9.8% | Added |
| CenterBook Partners LP | 14,194 | $1.26M | 0.07% | +14,194 | New |
| Rice Hall James & Associates, LLC | 14,222 | $1.26M | 0.07% | +50.0% | Added |
| Creative Planning | 14,994 | $1.33M | 0.00% | +2,557+20.6% | Added |
| Point72 Asset Management, L.P. | 16,309 | $1.44M | 0.00% | +2,851+21.2% | Added |
| Two Sigma Investments, LP | 16,359 | $1.45M | 0.00% | +4,124+33.7% | Added |
| King Luther Capital Management Corp | 17,411 | $1.54M | 0.01% | 00.0% | Unchanged |
| Segall Bryant & Hamill, LLC | 18,174 | $1.61M | 0.02% | −29−0.2% | Reduced |
| Trexquant Investment LP | 18,661 | $1.65M | 0.01% | −27,460−59.5% | Reduced |
| State of Wisconsin Investment Board | 19,006 | $1.68M | 0.00% | −3,600−15.9% | Reduced |
| Lazard Asset Management LLC | 20,328 | $1.80M | 0.00% | +20,328 | New |
| Franklin Resources Inc | 21,553 | $1.91M | 0.00% | −521−2.4% | Reduced |
| BBR Partners, LLC | 25,195 | $2.23M | 0.12% | 00.0% | Unchanged |
| Renaissance Technologies LLC | 31,600 | $2.79M | 0.00% | +28,100+802.9% | Added |
| Vanguard Fiduciary Trust Co | 38,337 | $3.39M | 0.00% | +38,337 | New |
| Bank of New York Mellon Corp | 43,937 | $3.88M | 0.00% | −837−1.9% | Reduced |
| Jacobs Levy Equity Management, Inc | 44,417 | $3.93M | 0.02% | +5,575+14.4% | Added |
| Herald Investment Management Ltd | 50,000 | $4.39M | 0.61% | 00.0% | Unchanged |
| Wasatch Advisors Inc | 51,233 | $4.53M | 0.03% | +51,233 | New |
| Vanguard Portfolio Management LLC | 52,586 | $4.65M | 0.00% | +52,586 | New |
| D. E. Shaw & Co., Inc. | 54,558 | $4.82M | 0.00% | −22,007−28.7% | Reduced |
| Bank of America Corp | 57,871 | $5.12M | 0.00% | +3,207+5.9% | Added |
| Charles Schwab Investment Management Inc | 62,424 | $5.52M | 0.00% | +511+0.8% | Added |
| Gabelli Funds LLC | 62,499 | $5.53M | 0.04% | +1,775+2.9% | Added |
| Meros Investment Management, LP | 68,032 | $6.02M | 2.61% | −16,985−20.0% | Reduced |
| Northern Trust Corp | 69,264 | $6.12M | 0.00% | +3,613+5.5% | Added |
| Janus Henderson Group PLC | 69,401 | $6.14M | 0.00% | −47,241−40.5% | Reduced |
| Goldman Sachs Group Inc | 70,617 | $6.24M | 0.00% | +15,349+27.8% | Added |
| Roubaix Capital, LLC | 72,115 | $6.38M | 2.98% | +16,926+30.7% | Added |
| Crawford Investment Counsel Inc | 95,535 | $8.45M | 0.14% | +14,315+17.6% | Added |
| Monimus Capital Management, LP | 101,292 | $8.96M | 2.48% | +60,450+148.0% | Added |
| Raymond James Financial Inc | 122,911 | $10.7M | 0.00% | +22,514+22.4% | Added |
| State Street Corp | 122,068 | $10.8M | 0.00% | +1,427+1.2% | Added |
| Dimensional Fund Advisors LP | 124,630 | $11.0M | 0.00% | +8,267+7.1% | Added |
| Geode Capital Management, LLC | 128,002 | $11.3M | 0.00% | +520.0% | Added |
| Russell Investments Group, Ltd. | 135,069 | $11.9M | 0.01% | +18,732+16.1% | Added |
| Kennedy Capital Management, Inc. | 142,343 | $12.6M | 0.27% | −2,263−1.6% | Reduced |
| Diamond Hill Capital Management Inc | 155,302 | $13.7M | 0.09% | +13,329+9.4% | Added |
| Royce & Associates LP | 161,229 | $14.3M | 0.14% | +7,877+5.1% | Added |
| Morgan Stanley | 162,116 | $14.3M | 0.00% | −13,473−7.7% | Reduced |
| AQR Capital Management LLC | 170,562 | $15.1M | 0.01% | +100,424+143.2% | Added |
| Ranger Investment Management, L.P. | 202,903 | $17.9M | 1.30% | −2,360−1.1% | Reduced |
| Vanguard Capital Management LLC | 232,643 | $20.6M | 0.00% | +232,643 | New |
| Select Equity Group, L.P. | 235,885 | $20.9M | 0.11% | +29,450+14.3% | Added |
| Boston Partners | 268,711 | $23.8M | 0.02% | +55,335+25.9% | Added |
| BlackRock, Inc. | 393,851 | $34.8M | 0.00% | −4,815−1.2% | Reduced |
| Long Path Partners LP | 405,583 | $35.9M | 16.29% | +178,360+78.5% | Added |
| Geneva Capital Management LLC | 0 | $0 | 0.00% | −178,713−100.0% | Sold out |
| Mason Capital Management LLC | 0 | $0 | 0.00% | −70,300−100.0% | Sold out |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −56,371−100.0% | Sold out |
| Qube Research & Technologies Ltd | 0 | $0 | 0.00% | −28,130−100.0% | Sold out |
| Irenic Capital Management LP | 0 | $0 | 0.00% | −25,000−100.0% | Sold out |
| Gsa Capital Partners LLP | 0 | $0 | 0.00% | −11,614−100.0% | Sold out |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −7,137−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −6,937−100.0% | Sold out |
| Arrowstreet Capital, Limited Partnership | 0 | $0 | 0.00% | −6,228−100.0% | Sold out |
| Dynamic Technology Lab Private Ltd | 0 | $0 | 0.00% | −6,190−100.0% | Sold out |
| Millennium Management LLC | 0 | $0 | 0.00% | −4,465−100.0% | Sold out |
| Aquatic Capital Management LLC | 0 | $0 | 0.00% | −4,446−100.0% | Sold out |
| Balyasny Asset Management LLC | 0 | $0 | 0.00% | −3,792−100.0% | Sold out |
| Quest Partners LLC | 0 | $0 | 0.00% | −2,116−100.0% | Sold out |
| Kestra Advisory Services, LLC | 0 | $0 | 0.00% | −700−100.0% | Sold out |
| Amalgamated Bank | 0 | $0 | 0.00% | −165−100.0% | Sold out |
| SageView Advisory Group, LLC | 0 | $0 | 0.00% | −30−100.0% | Sold out |
| Tucker Asset Management LLC | 0 | $0 | 0.00% | −3−100.0% | Sold out |
| Clearstead Advisors, LLC | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| Hughes Financial Services, LLC | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| Vanguard Group Inc | – | – | – | – | Not filed |
| Global Retirement Partners, LLC | – | – | – | – | Not filed |
| Comerica Bank | – | – | – | – | Not filed |
| CIBC Private Wealth Group, LLC | – | – | – | – | Not filed |