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, Q4 2025
Institutional positions in Mesa Laboratories Inc as of Dec 31, 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
- 159
- +23 vs. Q3 2025
- Shares held
- 4.74M
- −60.2K (−1.3%) vs. Q3 2025
- Total value
- $372.5M
- +$50.5M (+15.7%) vs. Q3 2025
- New holders
- 35
- 55 more added
- Sold out
- 12
- 44 more reduced
5 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2025
Shares, value and share of portfolio for each institution holding Mesa Laboratories Inc; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Nuveen, LLC | 10,078 | $791.1K | 0.00% | 00.0% | Unchanged |
| Stifel Financial Corp | 11,275 | $885.1K | 0.00% | +1,170+11.6% | Added |
| Gsa Capital Partners LLP | 11,614 | $912.0K | 0.08% | +846+7.9% | Added |
| Two Sigma Investments, LP | 12,235 | $960.4K | 0.00% | +2,612+27.1% | Added |
| Creative Planning | 12,437 | $976.3K | 0.00% | +3,705+42.4% | Added |
| XTX Topco Ltd | 12,601 | $989.2K | 0.03% | +12,601 | New |
| Invesco Ltd. | 12,845 | $1.01M | 0.00% | +1,350+11.7% | Added |
| Man Group plc | 13,387 | $1.05M | 0.00% | +13,387 | New |
| Point72 Asset Management, L.P. | 13,458 | $1.06M | 0.00% | +13,458 | New |
| American Century Companies Inc | 13,470 | $1.06M | 0.00% | +735+5.8% | Added |
| Quadrature Capital Ltd | 13,528 | $1.06M | 0.01% | +13,528 | New |
| Public Employees Retirement System of Ohio | 13,722 | $1.08M | 0.00% | 00.0% | Unchanged |
| Rice Hall James & Associates, LLC | 14,217 | $1.12M | 0.06% | −2,928−17.1% | Reduced |
| Connor, Clark & Lunn Investment Management Ltd. | 14,369 | $1.13M | 0.00% | +14,369 | New |
| Principal Financial Group Inc | 14,892 | $1.17M | 0.00% | +4,827+48.0% | Added |
| Numerai GP LLC | 14,909 | $1.17M | 0.14% | +11,299+313.0% | Added |
| King Luther Capital Management Corp | 17,411 | $1.37M | 0.01% | −2,510−12.6% | Reduced |
| Segall Bryant & Hamill, LLC | 18,203 | $1.43M | 0.02% | −84−0.5% | Reduced |
| Franklin Resources Inc | 22,074 | $1.73M | 0.00% | +22,074 | New |
| State of Wisconsin Investment Board | 22,606 | $1.77M | 0.00% | +4,200+22.8% | Added |
| Irenic Capital Management LP | 25,000 | $1.96M | 0.26% | +25,000 | New |
| BBR Partners, LLC | 25,195 | $1.98M | 0.11% | 00.0% | Unchanged |
| Tudor Investment Corp Et Al | 27,426 | $2.15M | 0.01% | +21,085+332.5% | Added |
| Qube Research & Technologies Ltd | 28,130 | $2.21M | 0.00% | −2,595−8.4% | Reduced |
| Jacobs Levy Equity Management, Inc | 38,842 | $3.05M | 0.01% | +34,985+907.1% | Added |
| Monimus Capital Management, LP | 40,842 | $3.21M | 2.12% | +7,098+21.0% | Added |
| Bank of New York Mellon Corp | 44,774 | $3.51M | 0.00% | +11,091+32.9% | Added |
| Trexquant Investment LP | 46,121 | $3.62M | 0.03% | +21,031+83.8% | Added |
| Herald Investment Management Ltd | 50,000 | $3.92M | 0.51% | 00.0% | Unchanged |
| Bank of America Corp | 54,664 | $4.29M | 0.00% | +7,565+16.1% | Added |
| Roubaix Capital, LLC | 55,189 | $4.33M | 1.85% | −21,468−28.0% | Reduced |
| Goldman Sachs Group Inc | 55,268 | $4.34M | 0.00% | +13,487+32.3% | Added |
| Jane Street Group, LLC | 56,371 | $4.43M | 0.01% | +18,144+47.5% | Added |
| Citadel Advisors LLC | 58,521 | $4.59M | 0.00% | +24,343+71.2% | Added |
| Gabelli Funds LLC | 60,724 | $4.77M | 0.03% | +6,750+12.5% | Added |
| Charles Schwab Investment Management Inc | 61,913 | $4.86M | 0.00% | +7,308+13.4% | Added |
| Northern Trust Corp | 65,651 | $5.15M | 0.00% | −6,315−8.8% | Reduced |
| AQR Capital Management LLC | 70,138 | $5.51M | 0.00% | +37,499+114.9% | Added |
| Mason Capital Management LLC | 70,300 | $5.52M | 0.98% | 00.0% | Unchanged |
| D. E. Shaw & Co., Inc. | 76,565 | $6.01M | 0.00% | +43,754+133.4% | Added |
| Crawford Investment Counsel Inc | 81,220 | $6.38M | 0.11% | −1,247−1.5% | Reduced |
| Meros Investment Management, LP | 85,017 | $6.67M | 2.65% | +8,540+11.2% | Added |
| Raymond James Financial Inc | 100,397 | $7.89M | 0.00% | +52,995+111.8% | Added |
| Russell Investments Group, Ltd. | 116,337 | $9.13M | 0.01% | +17,150+17.3% | Added |
| Dimensional Fund Advisors LP | 116,363 | $9.13M | 0.00% | −409−0.4% | Reduced |
| Janus Henderson Group PLC | 116,642 | $9.16M | 0.00% | −29,012−19.9% | Reduced |
| State Street Corp | 120,641 | $9.47M | 0.00% | +1,693+1.4% | Added |
| Geode Capital Management, LLC | 127,950 | $10.0M | 0.00% | +90+0.1% | Added |
| Diamond Hill Capital Management Inc | 141,973 | $11.1M | 0.06% | +18,592+15.1% | Added |
| Kennedy Capital Management, Inc. | 144,606 | $11.4M | 0.24% | +23,060+19.0% | Added |
| Royce & Associates LP | 153,352 | $12.0M | 0.12% | +4,794+3.2% | Added |
| Morgan Stanley | 175,589 | $13.8M | 0.00% | −79,385−31.1% | Reduced |
| Geneva Capital Management LLC | 178,713 | $14.0M | 0.26% | −12,673−6.6% | Reduced |
| Ranger Investment Management, L.P. | 205,263 | $16.1M | 1.11% | −4,437−2.1% | Reduced |
| Select Equity Group, L.P. | 206,435 | $16.2M | 0.08% | +79,720+62.9% | Added |
| Boston Partners | 213,376 | $16.8M | 0.02% | +99,019+86.6% | Added |
| Long Path Partners LP | 227,223 | $17.8M | 6.10% | +227,223 | New |
| Vanguard Group Inc | 321,899 | $25.3M | 0.00% | +182+0.1% | Added |
| BlackRock, Inc. | 398,666 | $31.3M | 0.00% | +9,871+2.5% | Added |
| Conestoga Capital Advisors, LLC | 0 | $0 | 0.00% | −426,457−100.0% | Sold out |
| Simcoe Capital Management, LLC | 0 | $0 | 0.00% | −190,929−100.0% | Sold out |
| Ameriprise Financial Inc | 0 | $0 | 0.00% | −39,095−100.0% | Sold out |
| Victory Capital Management Inc | 0 | $0 | 0.00% | −10,455−100.0% | Sold out |
| Brevan Howard Capital Management LP | 0 | $0 | 0.00% | −5,977−100.0% | Sold out |
| Susquehanna International Group, LLP | 0 | $0 | 0.00% | −4,193−100.0% | Sold out |
| State of Tennessee, Treasury Department | 0 | $0 | 0.00% | −1,238−100.0% | Sold out |
| Fifth Third Bancorp | 0 | $0 | 0.00% | −264−100.0% | Sold out |
| State of Wyoming | 0 | $0 | 0.00% | −198−100.0% | Sold out |
| Optiver Holding B.V. | 0 | $0 | 0.00% | −38−100.0% | Sold out |
| Principal Securities, Inc. | 0 | $0 | 0.00% | −21−100.0% | Sold out |
| Northwestern Mutual Wealth Management Co | 0 | $0 | 0.00% | −6−100.0% | Sold out |
| Kent Lake PR LLC | – | – | – | – | Not filed |
| Cubist Systematic Strategies, LLC | – | – | – | – | Not filed |
| Point72 Asia (Singapore) Pte. Ltd. | – | – | – | – | Not filed |
| Glenmede Investment Management, LP | – | – | – | – | Not filed |
| Point72 (DIFC) Ltd | – | – | – | – | Not filed |