Mesa LaboratoriesMLAB
13F holders, Q3 2025 (September 30)141holders −13
25new positions
39sold out
7famous investors
$67.01avg. 13F price*
At the end of Q3 2025, 141 institutions reported holding Mesa Laboratories Inc. (MLAB) in their 13F filings, down 13 from Q2 2025. 25 opened new positions and 39 sold out. The largest holders were Conestoga Capital Advisors, LLC ($28.6M), BlackRock, Inc. ($26.1M) and Vanguard Group Inc. ($21.6M). 7 famous investors held it, including Israel Englander (0.0% of Millennium Management's portfolio), Mario Gabelli (0.0% of GAMCO Investors's portfolio) and Paul Tudor Jones (0.0% of Tudor Investment Corporation's portfolio).
- Company
- Mesa Laboratories Inc.
- CUSIP
- 59064R109
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 25 | $41.1M |
| Exits | 39 | $12.9M |
All 13F filers, Q2 2025 → Q3 2025: 1,323,763 shares bought and 1,530,028 shares sold, net −206,265 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 141 holders
| Conestoga Capital Advisors, LLC | 0.46% | Reduce -24.7% | 426,457 | $28.6M |
| BlackRock, Inc. | 0.00% | Reduce -50.9% | 388,795 | $26.1M |
| Vanguard Group Inc. | 0.00% | Reduce -17.4% | 321,717 | $21.6M |
| Morgan Stanley | 0.00% | Add +16.5% | 254,974 | $17.1M |
| Ranger Investment Management, L.P. | 0.98% | Reduce -2.1% | 209,700 | $14.1M |
| Geneva Capital Management LLC | 0.22% | Reduce -3.9% | 191,386 | $12.8M |
| Simcoe Capital Management, LLC | 1.85% | New | 190,929 | $12.8M |
| Royce & Associates LP | 0.10% | Reduce -40.0% | 148,558 | $10.0M |
| Janus Henderson Group PLC | 0.00% | Add +28.6% | 145,654 | $9.8M |
| Kent Lake PR LLC | 4.61% | New | 134,516 | $9.0M |
| Millennium Management | 0.01% | Add +131.9% | 133,817 | $9.0M |
| Geode Capital Management, LLC | 0.00% | Reduce -7.9% | 127,860 | $8.6M |
| Select Equity Group, L.P. | 0.04% | Add +24.0% | 126,715 | $8.5M |
| Diamond Hill Capital Management, LLC (Investment Advisor) | 0.04% | Add +218.0% | 123,381 | $8.3M |
| Kennedy Capital Management LLC | 0.18% | Add +34.3% | 121,546 | $8.1M |
| State Street Corp. | 0.00% | Reduce -43.9% | 118,948 | $8.0M |
| Dimensional Fund Advisors LP | 0.00% | Add +1.3% | 116,772 | $7.8M |
| Boston Partners | 0.01% | Add +2009.5% | 114,357 | $7.7M |
| Russell Investments Group, Ltd. | 0.01% | Add +24.8% | 99,187 | $6.6M |
| Crawford Investment Counsel Inc. | 0.09% | Add +59.4% | 82,467 | $5.5M |
| Roubaix Capital, LLC | 2.39% | New | 76,657 | $5.1M |
| Meros Investment Management, LP | 2.19% | Add +108.8% | 76,477 | $5.1M |
| Northern Trust Corp. | 0.00% | Reduce -22.4% | 71,966 | $4.8M |
| Mason Capital Management LLC | 0.96% | New | 70,300 | $4.7M |
| Charles Schwab Investment Management Inc. | 0.00% | Reduce -11.6% | 54,605 | $3.7M |
| Gabelli Funds LLC | 0.02% | Add +114.6% | 53,974 | $3.6M |
| HERALD INVESTMENT MANAGEMENT Ltd | 0.45% | Add +300.0% | 50,000 | $3.3M |
| Raymond James Financial Inc. | 0.00% | Reduce -74.5% | 47,402 | $3.2M |
| Bank of America Corp. | 0.00% | Reduce -27.5% | 47,099 | $3.2M |
| Comerica Bank | 0.01% | Reduce -4.2% | 42,388 | $2.8M |
| Goldman Sachs Group Inc. | 0.00% | Add +42.0% | 41,781 | $2.8M |
| Ameriprise Financial Inc. | 0.00% | Reduce -46.8% | 39,095 | $2.6M |
| Jane Street Group, LLC | 0.00% | Add +177.3% | 38,227 | $2.6M |
| Cubist Systematic Strategies, LLC | 0.03% | New | 35,988 | $2.4M |
| Citadel Advisors | 0.00% | Add +27.2% | 34,178 | $2.3M |
| Monimus Capital Management, LP | 1.68% | New | 33,744 | $2.3M |
| Bank of New York Mellon Corp | 0.00% | Reduce -37.0% | 33,683 | $2.3M |
| D. E. Shaw & Co. | 0.00% | Add +278.7% | 32,811 | $2.2M |
| AQR Capital Management | 0.00% | Add +322.4% | 32,639 | $2.2M |
| Qube Research & Technologies Ltd | 0.00% | Add +54.4% | 30,725 | $2.1M |
| Royal Bank of Canada | 0.00% | Reduce -27.9% | 26,882 | $1.8M |
| BBR Partners, LLC | 0.10% | No change | 25,195 | $1.7M |
| Trexquant Investment LP | 0.02% | Add +524.1% | 25,090 | $1.7M |
| King Luther Capital Management Corp. | 0.01% | No change | 19,921 | $1.3M |
| UBS Group AG | 0.00% | Reduce -38.8% | 19,161 | $1.3M |
| State of Wisconsin Investment Board | 0.00% | New | 18,406 | $1.2M |
| Segall Bryant & Hamill, LLC | 0.02% | No change | 18,287 | $1.2M |
| Rice Hall James & Associates, LLC | 0.06% | Reduce -32.4% | 17,145 | $1.1M |
| Envestnet Asset Management Inc. | 0.00% | Reduce -18.6% | 16,682 | $1.1M |
| Marshall Wace, LLP | 0.00% | New | 14,600 | $978K |
| Public Employees Retirement System of Ohio | 0.00% | No change | 13,722 | $920K |
| American Century Companies Inc. | 0.00% | Reduce -5.2% | 12,735 | $853K |
| Invesco Ltd. | 0.00% | Reduce -35.4% | 11,495 | $770K |
| Renaissance Technologies | 0.00% | Reduce -84.0% | 10,900 | $730K |
| Gsa Capital Partners LLP | 0.06% | Add +70.6% | 10,768 | $722K |
| Victory Capital Management Inc. | 0.00% | Add +448.0% | 10,455 | $701K |
| Stifel Financial Corp. | 0.00% | Add +21.9% | 10,105 | $677K |
| Nuveen, LLC | 0.00% | Reduce -36.7% | 10,078 | $675K |
| Principal Financial Group Inc. | 0.00% | Reduce -66.2% | 10,065 | $674K |
| Two Sigma Investments, LP | 0.00% | New | 9,623 | $645K |
| Creative Planning | 0.00% | Add +37.5% | 8,732 | $585K |
| GAMCO Investors | 0.01% | Add +109.0% | 8,212 | $550K |
| Barclays PLC | 0.00% | Reduce -24.6% | 7,663 | $513K |
| Rhumbline Advisers | 0.00% | Reduce -41.1% | 7,540 | $505K |
| Tudor Investment Corporation | 0.00% | Add +50.9% | 6,341 | $425K |
| AlphaQuest LLC | 0.03% | Add +0.3% | 6,071 | $407K |
| Brevan Howard Capital Management LP | 0.01% | Add +160.0% | 5,977 | $401K |
| LPL Financial LLC | 0.00% | Reduce -18.0% | 5,813 | $390K |
| Sei Investments Co. | 0.00% | Add +26.7% | 5,525 | $370K |
| Point72 Asia (Singapore) Pte. Ltd. | 0.06% | New | 5,485 | $368K |
| Alliancebernstein L.P. | 0.00% | Reduce -4.2% | 5,424 | $363K |
| Wells Fargo & Company | 0.00% | Reduce -71.5% | 5,176 | $347K |
| JPMorgan Chase & Co. | 0.00% | Reduce -14.2% | 4,321 | $290K |
| EntryPoint Capital, LLC | 0.11% | New | 4,245 | $284K |
| Susquehanna International Group, LLP | 0.00% | Reduce -61.7% | 4,193 | $281K |
| Deutsche Bank AG | 0.00% | Add +3.1% | 4,192 | $281K |
| T. Rowe Price Associates Inc. | 0.00% | Add +7.4% | 4,113 | $276K |
| Acadian Asset Management LLC | 0.00% | New | 4,042 | $268K |
| Balyasny Asset Management L.P. | 0.00% | New | 3,972 | $266K |
| Jacobs Levy Equity Management, Inc. | 0.00% | New | 3,857 | $258K |
| Numerai GP LLC | 0.03% | New | 3,610 | $242K |
| Aquatic Capital Management LLC | 0.00% | Add +452.0% | 3,610 | $242K |
| Kings Path Partners LLC | 0.08% | No change | 3,405 | $228K |
| Glenmede Investment Management, LP | 0.00% | Reduce -97.9% | 3,010 | $202K |
| MetLife Investment Management, LLC | 0.00% | No change | 2,888 | $194K |
| Quantbot Technologies LP | 0.00% | New | 2,662 | $178K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Reduce -12.8% | 2,476 | $166K |
| New York State Common Retirement Fund | 0.00% | No change | 2,143 | $144K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | Add +7.0% | 1,331 | $89K |
| Smartleaf Asset Management LLC | 0.01% | Reduce -23.5% | 1,299 | $83K |
| State of Tennessee, Department of Treasury | 0.00% | Reduce -61.6% | 1,238 | $83K |
| Public Employees Retirement Association of Colorado | 0.00% | Reduce -4.5% | 1,181 | $79K |
| BNP Paribas Financial Markets | 0.00% | Add +30.9% | 1,029 | $69K |
| Asset Dedication, LLC | 0.00% | No change | 830 | $56K |
| Geneos Wealth Management Inc. | 0.00% | No change | 728 | $49K |
| US Bancorp \de | 0.00% | Reduce -42.2% | 702 | $47K |
| Arax Advisory Partners | 0.00% | Add +20.1% | 615 | $41K |
| FMR LLC | 0.00% | Reduce -79.3% | 606 | $41K |
| Cwm, LLC | 0.00% | Add +48.9% | 597 | $40K |
| Point72 (DIFC) Ltd | 0.00% | New | 576 | $39K |
"% of holder's portfolio" is MLAB's weight in each manager's 13F, not the share of Mesa Laboratories Inc. the manager owns.