Mesa LaboratoriesMLAB
13F holders, Q1 2025 (March 31)151holders −5
17new positions
21sold out
3famous investors
$118.67avg. 13F price*
At the end of Q1 2025, 151 institutions reported holding Mesa Laboratories Inc. (MLAB) in their 13F filings, down 5 from Q4 2024. 17 opened new positions and 21 sold out. The largest holders were BlackRock, Inc. ($98.2M), Conestoga Capital Advisors, LLC ($67.8M) and Vanguard Group Inc. ($45.6M). 3 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio), Cliff Asness (0.0% of AQR Capital Management's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Mesa Laboratories Inc.
- CUSIP
- 59064R109
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2024 → Q1 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 17 | $8.8M |
| Exits | 21 | $8.0M |
All 13F filers, Q4 2024 → Q1 2025: 289,954 shares bought and 231,157 shares sold, net +58,797 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 151 holders
| BlackRock, Inc. | 0.00% | Reduce -2.0% | 827,616 | $98.2M |
| Conestoga Capital Advisors, LLC | 1.02% | Reduce -0.3% | 571,358 | $67.8M |
| Vanguard Group Inc. | 0.00% | Add +0.5% | 384,613 | $45.6M |
| Royce & Associates LP | 0.35% | Reduce -5.6% | 271,118 | $32.2M |
| Raymond James Financial Inc. | 0.01% | Add +6.5% | 264,013 | $31.3M |
| Ranger Investment Management, L.P. | 1.96% | Reduce -1.1% | 230,988 | $27.4M |
| State Street Corp. | 0.00% | Reduce -2.4% | 219,543 | $26.1M |
| Morgan Stanley | 0.00% | Reduce -10.1% | 216,290 | $25.7M |
| Geneva Capital Management LLC | 0.42% | Add +0.2% | 189,312 | $22.5M |
| Ameriprise Financial Inc. | 0.01% | Add +9.8% | 166,768 | $19.8M |
| Glenmede Trust Co. NA | 0.09% | Reduce -3.5% | 146,544 | $17.4M |
| Geode Capital Management, LLC | 0.00% | Add +10.5% | 137,516 | $16.3M |
| Kennedy Capital Management LLC | 0.32% | Add +51.8% | 113,271 | $13.4M |
| Dimensional Fund Advisors LP | 0.00% | Reduce -2.3% | 111,247 | $13.2M |
| Russell Investments Group, Ltd. | 0.01% | Add +27.9% | 87,056 | $10.3M |
| Northern Trust Corp. | 0.00% | Reduce -12.1% | 82,444 | $9.8M |
| Janus Henderson Group PLC | 0.01% | Reduce -6.4% | 80,744 | $9.7M |
| Select Equity Group, L.P. | 0.04% | Add +439.0% | 73,897 | $8.8M |
| Bank of America Corp. | 0.00% | Reduce -1.7% | 67,307 | $8.0M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +4.6% | 65,464 | $7.8M |
| Bank of New York Mellon Corp | 0.00% | Add +2.7% | 54,767 | $6.5M |
| Comerica Bank | 0.02% | Add +4.4% | 44,285 | $5.3M |
| Principal Financial Group Inc. | 0.00% | Add +13.8% | 43,659 | $5.2M |
| Meros Investment Management, LP | 2.23% | Reduce -20.6% | 31,964 | $3.8M |
| Royal Bank of Canada | 0.00% | Add +1.2% | 30,772 | $3.7M |
| Wells Fargo & Company | 0.00% | Add +2.4% | 30,019 | $3.6M |
| Diamond Hill Capital Management, LLC (Investment Advisor) | 0.02% | Add +10.6% | 29,458 | $3.5M |
| BBR Partners, LLC | 0.23% | New | 27,595 | $3.3M |
| UBS Group AG | 0.00% | Add +38.6% | 27,387 | $3.2M |
| Rice Hall James & Associates, LLC | 0.19% | Reduce -1.1% | 27,375 | $3.2M |
| Crawford Investment Counsel Inc. | 0.06% | New | 26,200 | $3.1M |
| Segall Bryant & Hamill, LLC | 0.04% | Reduce -2.2% | 20,010 | $2.4M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +3.5% | 19,977 | $2.4M |
| King Luther Capital Management Corp. | 0.01% | No change | 19,921 | $2.4M |
| Nuveen, LLC | 0.00% | — | 19,424 | $2.3M |
| Envestnet Asset Management Inc. | 0.00% | Add +8.3% | 19,058 | $2.3M |
| Invesco Ltd. | 0.00% | Reduce -3.1% | 17,929 | $2.1M |
| Public Sector Pension Investment Board | 0.01% | Add +27.1% | 17,256 | $2.0M |
| Keeley-Teton Advisors, LLC | 0.23% | Reduce -28.7% | 15,678 | $1.9M |
| Goldman Sachs Group Inc. | 0.00% | Reduce -48.8% | 15,334 | $1.8M |
| Legal & General Group Plc | 0.00% | Reduce -2.6% | 13,911 | $1.7M |
| Public Employees Retirement System of Ohio | 0.01% | Reduce -18.7% | 13,722 | $1.6M |
| Rhumbline Advisers | 0.00% | Add +4.4% | 13,628 | $1.6M |
| American Century Companies Inc. | 0.00% | Add +40.2% | 13,237 | $1.6M |
| HERALD INVESTMENT MANAGEMENT Ltd | 0.28% | Add +68.5% | 12,500 | $1.5M |
| Lazard Asset Management LLC | 0.00% | Reduce -8.3% | 11,360 | $1.3M |
| Swiss National Bank | 0.00% | No change | 10,602 | $1.3M |
| Citigroup Inc. | 0.00% | Add +13.1% | 8,859 | $1.1M |
| Victory Capital Management Inc. | 0.00% | Reduce -1.5% | 8,706 | $1.0M |
| Renaissance Technologies | 0.00% | Add +9.3% | 8,200 | $973K |
| AQR Capital Management | 0.00% | Reduce -25.1% | 8,156 | $968K |
| Creative Planning | 0.00% | Add +38.0% | 7,785 | $924K |
| Susquehanna International Group, LLP | 0.00% | Add +184.0% | 7,091 | $841K |
| Jane Street Group, LLC | 0.00% | Reduce -79.6% | 7,019 | $833K |
| LPL Financial LLC | 0.00% | Add +0.1% | 6,982 | $828K |
| CANADA LIFE ASSURANCE Co | 0.00% | No change | 6,927 | $823K |
| Barclays PLC | 0.00% | Reduce -27.7% | 6,698 | $795K |
| Citadel Advisors | 0.00% | Reduce -10.8% | 6,082 | $722K |
| Alliancebernstein L.P. | 0.00% | Add +1.4% | 5,660 | $672K |
| Prudential Financial Inc. | 0.00% | Add +1.1% | 5,528 | $656K |
| Sei Investments Co. | 0.00% | Add +0.1% | 5,416 | $643K |
| Mackenzie Financial Corp. | 0.00% | Reduce -30.4% | 5,247 | $623K |
| JPMorgan Chase & Co. | 0.00% | Add +1.1% | 5,058 | $600K |
| California State Teachers Retirement System | 0.00% | No change | 5,041 | $598K |
| Man Group plc | 0.00% | New | 5,010 | $594K |
| Choreo, LLC | 0.01% | Reduce -3.3% | 4,887 | $580K |
| Deutsche Bank AG | 0.00% | Reduce -8.6% | 4,703 | $558K |
| Boston Partners | 0.00% | Add +0.8% | 4,663 | $553K |
| Kings Path Partners LLC | 0.24% | Reduce -38.6% | 4,161 | $494K |
| Thrivent Financial for Lutherans | 0.00% | Reduce -4.9% | 3,991 | $474K |
| Qube Research & Technologies Ltd | 0.00% | New | 3,708 | $440K |
| T. Rowe Price Associates Inc. | 0.00% | Add +3.5% | 3,589 | $426K |
| State of Tennessee, Department of Treasury | 0.00% | No change | 3,506 | $416K |
| Stifel Financial Corp. | 0.00% | Add +3.0% | 3,390 | $402K |
| Franklin Resources Inc. | 0.00% | Add +0.1% | 3,294 | $391K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Add +4.9% | 3,068 | $364K |
| Illinois Municipal Retirement Fund | 0.01% | New | 3,060 | $363K |
| Los Angeles Capital Management LLC | 0.00% | Reduce -10.9% | 3,024 | $359K |
| State of Alaska, Department of Revenue | 0.00% | Reduce -1.9% | 3,011 | $357K |
| FMR LLC | 0.00% | Add +110.4% | 2,897 | $344K |
| Intech Investment Management LLC | 0.00% | Add +46.2% | 2,894 | $343K |
| MetLife Investment Management, LLC | 0.00% | Reduce -2.3% | 2,888 | $343K |
| Jacobs Levy Equity Management, Inc. | 0.00% | New | 2,820 | $335K |
| &partners | 0.00% | New | 2,714 | $324K |
| Corebridge Financial, Inc. | 0.00% | Reduce -1.9% | 2,700 | $320K |
| Louisiana State Employees Retirement System | 0.01% | No change | 2,600 | $309K |
| SG Americas Securities, LLC | 0.00% | Add +18.7% | 2,461 | $292K |
| Gsa Capital Partners LLP | 0.03% | Reduce -21.1% | 2,347 | $278K |
| Cambridge Investment Research Advisors, Inc. | 0.00% | Reduce -4.9% | 2,296 | $272K |
| State Board of Administration of Florida Retirement System | 0.00% | No change | 2,190 | $260K |
| New York State Common Retirement Fund | 0.00% | No change | 2,143 | $254K |
| Verition Fund Management LLC | 0.00% | New | 2,100 | $249K |
| Yousif Capital Management, LLC | 0.00% | Reduce -1.3% | 2,061 | $245K |
| Avantax Advisory Services, Inc. | 0.00% | Add +22.4% | 2,036 | $242K |
| Manufacturers Life Insurance Company, The | 0.00% | Reduce -2.9% | 1,879 | $223K |
| Smartleaf Asset Management LLC | 0.02% | Reduce -2.8% | 1,792 | $214K |
| Teachers Retirement System of the State of Kentucky | 0.00% | No change | 1,613 | $191K |
| Pacer Advisors, Inc. | 0.00% | Reduce -10.4% | 1,572 | $187K |
| Amalgamated Bank | 0.00% | Reduce -2.3% | 1,551 | $184K |
| US Bancorp \de | 0.00% | Add +48.3% | 1,323 | $157K |
"% of holder's portfolio" is MLAB's weight in each manager's 13F, not the share of Mesa Laboratories Inc. the manager owns.