Mesa LaboratoriesMLAB
13F holders, Q2 2025 (June 30)154holders +3
22new positions
19sold out
7famous investors
$94.22avg. 13F price*
At the end of Q2 2025, 154 institutions reported holding Mesa Laboratories Inc. (MLAB) in their 13F filings, up 3 from Q1 2025. 22 opened new positions and 19 sold out. The largest holders were BlackRock, Inc. ($74.5M), Conestoga Capital Advisors, LLC ($53.3M) and Vanguard Group Inc. ($36.7M). 7 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio), Israel Englander (0.0% of Millennium Management's portfolio) and Mario Gabelli (0.0% of GAMCO Investors's portfolio).
- Company
- Mesa Laboratories Inc.
- CUSIP
- 59064R109
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2025 → Q2 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 22 | $13.1M |
| Exits | 19 | $4.1M |
All 13F filers, Q1 2025 → Q2 2025: 431,875 shares bought and 389,916 shares sold, net +41,959 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 154 holders
| BlackRock, Inc. | 0.00% | Reduce -4.4% | 791,127 | $74.5M |
| Conestoga Capital Advisors, LLC | 0.79% | Reduce -0.9% | 566,150 | $53.3M |
| Vanguard Group Inc. | 0.00% | Add +1.3% | 389,409 | $36.7M |
| Royce & Associates LP | 0.24% | Reduce -8.7% | 247,606 | $23.3M |
| Morgan Stanley | 0.00% | Add +1.2% | 218,796 | $20.6M |
| Ranger Investment Management, L.P. | 1.41% | Reduce -7.2% | 214,290 | $20.2M |
| State Street Corp. | 0.00% | Reduce -3.5% | 211,835 | $20.0M |
| Geneva Capital Management LLC | 0.31% | Add +5.2% | 199,092 | $18.8M |
| Raymond James Financial Inc. | 0.01% | Reduce -29.7% | 185,555 | $17.5M |
| Glenmede Investment Management, LP | 0.07% | — | 142,508 | $13.4M |
| Geode Capital Management, LLC | 0.00% | Add +0.9% | 138,769 | $13.1M |
| Dimensional Fund Advisors LP | 0.00% | Add +3.6% | 115,284 | $10.9M |
| Janus Henderson Group PLC | 0.01% | Add +40.3% | 113,285 | $10.7M |
| Select Equity Group, L.P. | 0.04% | Add +38.3% | 102,198 | $9.6M |
| Northern Trust Corp. | 0.00% | Add +12.5% | 92,732 | $8.7M |
| Kennedy Capital Management LLC | 0.20% | Reduce -20.1% | 90,479 | $8.5M |
| Russell Investments Group, Ltd. | 0.01% | Reduce -8.7% | 79,476 | $7.5M |
| Ameriprise Financial Inc. | 0.00% | Reduce -55.9% | 73,513 | $6.9M |
| Renaissance Technologies | 0.01% | Add +729.6% | 68,027 | $6.4M |
| Bank of America Corp. | 0.00% | Reduce -3.5% | 64,928 | $6.1M |
| Charles Schwab Investment Management Inc. | 0.00% | Reduce -5.7% | 61,764 | $5.8M |
| Millennium Management | 0.01% | New | 57,710 | $5.4M |
| Bank of New York Mellon Corp | 0.00% | Reduce -2.3% | 53,497 | $5.0M |
| Crawford Investment Counsel Inc. | 0.09% | Add +97.5% | 51,744 | $4.9M |
| Comerica Bank | 0.02% | Reduce -0.1% | 44,263 | $4.2M |
| Diamond Hill Capital Management, LLC (Investment Advisor) | 0.02% | Add +31.7% | 38,799 | $3.7M |
| Royal Bank of Canada | 0.00% | Add +21.1% | 37,278 | $3.5M |
| Meros Investment Management, LP | 1.64% | Add +14.6% | 36,618 | $3.5M |
| UBS Group AG | 0.00% | Add +14.3% | 31,294 | $2.9M |
| Principal Financial Group Inc. | 0.00% | Reduce -31.8% | 29,778 | $2.8M |
| Goldman Sachs Group Inc. | 0.00% | Add +91.9% | 29,426 | $2.8M |
| Citadel Advisors | 0.00% | Add +341.8% | 26,873 | $2.5M |
| Rice Hall James & Associates, LLC | 0.13% | Reduce -7.4% | 25,346 | $2.4M |
| BBR Partners, LLC | 0.15% | Reduce -8.7% | 25,195 | $2.4M |
| Gabelli Funds LLC | 0.02% | New | 25,156 | $2.4M |
| Wellington Management Group LLP | 0.00% | New | 22,471 | $2.1M |
| Envestnet Asset Management Inc. | 0.00% | Add +7.5% | 20,483 | $1.9M |
| King Luther Capital Management Corp. | 0.01% | No change | 19,921 | $1.9M |
| Qube Research & Technologies Ltd | 0.00% | Add +436.6% | 19,898 | $1.9M |
| Public Sector Pension Investment Board | 0.01% | Add +7.4% | 18,528 | $1.7M |
| Segall Bryant & Hamill, LLC | 0.02% | Reduce -8.6% | 18,287 | $1.7M |
| Wells Fargo & Company | 0.00% | Reduce -39.6% | 18,143 | $1.7M |
| Invesco Ltd. | 0.00% | Reduce -0.8% | 17,795 | $1.7M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Reduce -12.9% | 17,403 | $1.6M |
| Nuveen, LLC | 0.00% | Reduce -18.0% | 15,924 | $1.5M |
| Legal & General Group Plc | 0.00% | Add +5.4% | 14,657 | $1.4M |
| Jane Street Group, LLC | 0.00% | Add +96.4% | 13,785 | $1.3M |
| Public Employees Retirement System of Ohio | 0.00% | No change | 13,722 | $1.3M |
| American Century Companies Inc. | 0.00% | Add +1.5% | 13,431 | $1.3M |
| Rhumbline Advisers | 0.00% | Reduce -6.1% | 12,793 | $1.2M |
| HERALD INVESTMENT MANAGEMENT Ltd | 0.17% | No change | 12,500 | $1.2M |
| Susquehanna International Group, LLP | 0.00% | Add +54.5% | 10,954 | $1.0M |
| Swiss National Bank | 0.00% | Reduce -1.9% | 10,402 | $980K |
| Barclays PLC | 0.00% | Add +51.8% | 10,170 | $958K |
| D. E. Shaw & Co. | 0.00% | New | 8,665 | $816K |
| Stifel Financial Corp. | 0.00% | Add +144.6% | 8,292 | $781K |
| Man Group plc | 0.00% | Add +57.1% | 7,869 | $741K |
| AQR Capital Management | 0.00% | Reduce -5.3% | 7,727 | $728K |
| LPL Financial LLC | 0.00% | Add +1.5% | 7,088 | $668K |
| CANADA LIFE ASSURANCE Co | 0.00% | No change | 6,927 | $653K |
| Creative Planning | 0.00% | Reduce -18.4% | 6,353 | $599K |
| Gsa Capital Partners LLP | 0.04% | Add +168.9% | 6,312 | $595K |
| AlphaQuest LLC | 0.06% | Add +9667.7% | 6,056 | $571K |
| Alliancebernstein L.P. | 0.00% | No change | 5,660 | $533K |
| Prudential Financial Inc. | 0.00% | Add +2.4% | 5,658 | $533K |
| Citigroup Inc. | 0.00% | Reduce -36.7% | 5,609 | $528K |
| Boston Partners | 0.00% | Add +16.3% | 5,421 | $511K |
| California State Teachers Retirement System | 0.00% | No change | 5,041 | $475K |
| JPMorgan Chase & Co. | 0.00% | Reduce -0.4% | 5,038 | $475K |
| Choreo, LLC | 0.01% | Add +1.7% | 4,971 | $468K |
| Dynamic Technology Lab Private Ltd | 0.06% | New | 4,801 | $452K |
| Sei Investments Co. | 0.00% | Reduce -19.5% | 4,362 | $411K |
| Tudor Investment Corporation | 0.00% | New | 4,202 | $396K |
| Deutsche Bank AG | 0.00% | Reduce -13.5% | 4,066 | $383K |
| Trexquant Investment LP | 0.00% | New | 4,020 | $379K |
| Thrivent Financial for Lutherans | 0.00% | Add +0.1% | 3,996 | $377K |
| GAMCO Investors | 0.00% | New | 3,930 | $370K |
| T. Rowe Price Associates Inc. | 0.00% | Add +6.7% | 3,830 | $361K |
| Franklin Resources Inc. | 0.00% | Add +5.5% | 3,476 | $328K |
| Kings Path Partners LLC | 0.13% | Reduce -18.2% | 3,405 | $321K |
| State of Tennessee, Department of Treasury | 0.00% | Reduce -8.1% | 3,221 | $303K |
| State of Alaska, Department of Revenue | 0.00% | Add +7.1% | 3,224 | $303K |
| FMR LLC | 0.00% | Add +0.9% | 2,923 | $275K |
| MetLife Investment Management, LLC | 0.00% | No change | 2,888 | $272K |
| Illinois Municipal Retirement Fund | 0.00% | Reduce -5.8% | 2,884 | $272K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Reduce -7.4% | 2,840 | $268K |
| &partners | 0.00% | Reduce -1.8% | 2,664 | $251K |
| Intech Investment Management LLC | 0.00% | Reduce -10.4% | 2,593 | $244K |
| State Board of Administration of Florida Retirement System | 0.00% | Add +17.1% | 2,564 | $242K |
| Los Angeles Capital Management LLC | 0.00% | Reduce -17.2% | 2,504 | $236K |
| Louisiana State Employees Retirement System | 0.00% | Reduce -3.9% | 2,500 | $236K |
| Brevan Howard Capital Management LP | 0.00% | New | 2,299 | $217K |
| Cambridge Investment Research Advisors, Inc. | 0.00% | Reduce -1.9% | 2,252 | $212K |
| Virtu Financial LLC | 0.01% | New | 2,226 | $210K |
| MQS Management LLC | 0.11% | New | 2,194 | $207K |
| New York State Common Retirement Fund | 0.00% | No change | 2,143 | $202K |
| Victory Capital Management Inc. | 0.00% | Reduce -78.1% | 1,908 | $180K |
| Smartleaf Asset Management LLC | 0.01% | Reduce -5.2% | 1,699 | $168K |
| Teachers Retirement System of the State of Kentucky | 0.00% | No change | 1,613 | $152K |
| Amalgamated Bank | 0.00% | No change | 1,551 | $146K |
"% of holder's portfolio" is MLAB's weight in each manager's 13F, not the share of Mesa Laboratories Inc. the manager owns.