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Mesa Laboratories (MLAB) Institutional Ownership

Mesa Laboratories logo
$107.64 +1.60 (+1.51%)
Closing price 08/17/2026 04:00 PM Eastern
Extended Trading
$107.64 +0.00 (+0.00%)
As of 04:02 AM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.
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Institutional Ownership Changes (13F Filings) for Mesa Laboratories (NASDAQ:MLAB)

Current
Institutional Ownership
Percentage
90.60%
Number of
Institutional Buyers
(last 12 months)
75
Total
Institutional Inflows
(last 12 months)
$151.56M
Number of
Institutional Sellers
(last 12 months)
40
Total
Institutional Outflows
(last 12 months)
$352.91M
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MLAB Institutional Buying and Selling by Quarter

Mesa Laboratories Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
8/13/2026 Ranger Investment Management L.P.173,988$17.32M1.1%N/A3.107%
8/13/2026 Globeflex Capital L P11,581$1.15M0.1%N/A0.207%
8/7/2026 Diamond Hill Capital Management LLC Investment Advisor155,771$15.51M0.1%N/A2.782%
8/6/2026 Bank of New York Mellon Corp45,602$4.54M0.0%N/A0.814%
7/10/2026 Wasatch Advisors LP115,668$11.52M0.1%+125.8%2.095%
5/19/2026 Bank of America Corp DE57,871$5.12M0.0%+5.9%1.048%
5/19/2026Janus Henderson Group PLC69,401$6.14M0.0%-40.5%1.257%
5/18/2026 Royal Bank of Canada13,275$1.17M0.0%+143.3%0.240%
5/18/2026 Ranger Investment Management L.P.202,903$17.94M1.3%-1.1%3.676%
5/16/2026 Quantinno Capital Management LP4,318$382K0.0%+17.9%0.078%
5/16/2026 Lazard Asset Management LLC20,328$1.80M0.0%N/A0.368%
5/14/2026 Renaissance Technologies LLC31,600$2.79M0.0%+802.9%0.572%
5/14/2026 Gabelli Funds LLC62,499$5.53M0.0%+2.9%1.132%
5/14/2026 Inceptionr LLC4,078$361K0.1%N/A0.074%
5/14/2026 Sei Investments Co.7,403$655K0.0%-11.6%0.134%
5/14/2026 Globeflex Capital L P10,838$958K0.1%N/A0.196%
5/7/2026 Dimensional Fund Advisors LP124,630$11.02M0.0%+7.1%2.258%
5/7/2026 Roubaix Capital LLC72,115$6.38M3.0%+30.7%1.306%
5/5/2026 Bank of New York Mellon Corp43,937$3.89M0.0%-1.9%0.795%
5/4/2026 Principal Financial Group Inc.11,088$980K0.0%-25.5%0.201%
4/27/2026 Y Intercept Hong Kong Ltd6,315$558K0.0%N/A0.114%
4/21/2026 Wasatch Advisors LP51,233$4.53M0.0%N/A0.928%
4/16/2026 SG Americas Securities LLC2,667$236K0.0%-26.1%0.048%
3/3/2026 Caitong International Asset Management Co. Ltd341$27K0.0%N/A0.006%
2/19/2026 Invesco Ltd.12,845$1.01M0.0%+11.7%0.233%
2/18/2026 XTX Topco Ltd12,601$989K0.0%N/A0.228%
2/18/2026 Tudor Investment Corp ET AL27,426$2.15M0.0%+332.5%0.496%
2/18/2026 Quadrature Capital Ltd13,528$1.06M0.0%N/A0.245%
2/18/2026 Numerai GP LLC14,909$1.17M0.1%+313.0%0.270%
2/18/2026 Millennium Management LLC4,465$351K0.0%-96.7%0.081%
2/18/2026 Man Group plc13,387$1.05M0.0%N/A0.242%
2/18/2026 Irenic Capital Management LP25,000$1.96M0.1%N/A0.452%
2/18/2026Janus Henderson Group PLC116,642$9.16M0.0%-19.9%2.111%
2/18/2026 Engineers Gate Manager LP3,031$238K0.0%N/A0.055%
2/18/2026 Balyasny Asset Management L.P.3,792$298K0.0%-4.5%0.069%
2/17/2026 AQR Capital Management LLC70,138$5.51M0.0%+114.9%1.271%
2/17/2026 Trexquant Investment LP46,121$3.62M0.0%+83.8%0.836%
2/17/2026 Price T Rowe Associates Inc. MD3,141$247K0.0%-23.6%0.057%
2/17/2026 Monimus Capital Management LP40,842$3.21M2.1%+21.0%0.740%
2/17/2026 Russell Investments Group Ltd.116,337$9.13M0.0%+17.3%2.108%
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2/17/2026 Crawford Investment Counsel Inc.81,220$6.38M0.1%-1.5%1.471%
2/17/2026 State of Wisconsin Investment Board22,606$1.78M0.0%+22.8%0.410%
2/17/2026 ExodusPoint Capital Management LP6,937$545K0.0%N/A0.126%
2/17/2026 Royal Bank of Canada5,457$429K0.0%-79.7%0.099%
2/17/2026 Graham Capital Management L.P.3,723$292K0.0%N/A0.067%
2/17/2026 Rice Hall James & Associates LLC14,217$1.12M0.1%-17.1%0.258%
2/17/2026 Meros Investment Management LP85,017$6.67M2.6%+11.2%1.540%
2/16/2026 Squarepoint Ops LLC2,747$216K0.0%N/A0.050%
2/16/2026 Mariner LLC3,313$260K0.0%N/A0.060%
2/16/2026 Kennedy Capital Management LLC144,606$11.35M0.2%+19.0%2.620%
2/16/2026 Barclays PLC8,186$643K0.0%+6.8%0.148%
2/13/2026 Kestra Advisory Services LLC700$55K0.0%N/A0.013%
2/13/2026 Marshall Wace LLP7,137$560K0.0%-51.1%0.129%
2/13/2026 Stifel Financial Corp11,275$885K0.0%+11.6%0.204%
2/13/2026 Jacobs Levy Equity Management Inc.38,842$3.05M0.0%+907.1%0.704%
2/13/2026 Charles Schwab Investment Management Inc.61,913$4.86M0.0%+13.4%1.122%
2/13/2026 State Street Corp120,641$9.47M0.0%+1.4%2.186%
2/13/2026 Boston Partners213,376$16.75M0.0%+86.6%3.866%
2/13/2026 Dynamic Technology Lab Private Ltd6,190$486K0.1%N/A0.112%
2/13/2026 Caitong International Asset Management Co. Ltd341$27K0.1%N/A0.006%
2/13/2026 Wells Fargo & Company MN5,752$452K0.0%+11.1%0.104%
2/12/2026 Jane Street Group LLC56,371$4.43M0.0%+47.5%1.021%
2/12/2026Brooklyn Investment Group3,576$286K0.0%-24.1%0.065%
2/12/2026 State Board of Administration of Florida Retirement System2,564$201K0.0%N/A0.046%
2/12/2026 Renaissance Technologies LLC3,500$275K0.0%-67.9%0.063%
2/12/2026 Dimensional Fund Advisors LP116,363$9.14M0.0%-0.4%2.108%
2/12/2026 EntryPoint Capital LLC3,469$272K0.1%-18.3%0.063%
2/12/2026 Geneva Capital Management LLC178,713$14.03M0.3%-6.6%3.238%
2/11/2026 Deutsche Bank AG4,440$349K0.0%+5.9%0.080%
2/11/2026 Cerity Partners LLC3,361$264K0.0%N/A0.061%
2/11/2026 LPL Financial LLC4,984$391K0.0%-14.3%0.090%
2/11/2026 Franklin Resources Inc.22,074$1.73M0.0%N/A0.400%
2/10/2026 Goldman Sachs Group Inc.55,268$4.34M0.0%+32.3%1.001%
2/10/2026 Northwestern Mutual Wealth Management Co.328$26K0.0%+5,366.7%0.006%
2/9/2026 King Luther Capital Management Corp17,411$1.37M0.0%-12.6%0.315%
2/9/2026 Royce & Associates LP153,352$12.04M0.1%+3.2%2.778%
2/6/2026 Diamond Hill Capital Management Inc.141,973$11.15M0.1%+15.1%2.572%
2/6/2026 GSA Capital Partners LLP11,614$912K0.1%+7.9%0.210%
2/5/2026 Gamco Investors INC. ET AL7,754$609K0.0%-5.6%0.140%
2/5/2026 Gabelli Funds LLC60,724$4.77M0.0%+12.5%1.100%
1/26/2026CWM LLC1,485$117K0.0%+148.7%0.027%
1/9/2026 SG Americas Securities LLC3,609$283K0.0%N/A0.065%
1/1/2026 JPMorgan Chase & Co.4,321$290K0.0%-14.2%0.078%
1/1/2026 Tudor Investment Corp ET AL6,341$425K0.0%+50.9%0.115%
12/9/2025 Tudor Investment Corp ET AL6,341$425K0.0%+50.9%0.115%
11/17/2025 Jacobs Levy Equity Management Inc.3,857$258K0.0%N/A0.070%
11/17/2025 Susquehanna International Group LLP4,193$281K0.0%-61.7%0.076%
11/17/2025 Qube Research & Technologies Ltd30,725$2.06M0.0%+54.4%0.556%
11/17/2025 Numerai GP LLC3,610$242K0.0%N/A0.065%
11/17/2025 Mason Capital Management LLC70,300$4.71M1.0%N/A1.273%
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11/17/2025 Millennium Management LLC133,817$8.97M0.0%+131.9%2.423%
11/17/2025 MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.2,476$166K0.0%-12.8%0.045%
11/17/2025 Citadel Advisors LLC34,178$2.29M0.0%+27.2%0.619%
11/17/2025 Brevan Howard Capital Management LP5,977$401K0.0%+160.0%0.108%
11/17/2025 Crawford Investment Counsel Inc.82,467$5.53M0.1%+59.4%1.493%
11/17/2025 Bank of America Corp DE47,099$3.16M0.0%-27.5%0.853%
11/17/2025 Aquatic Capital Management LLC3,610$242K0.0%+452.0%0.065%
11/17/2025 Alliancebernstein L.P.5,424$363K0.0%-4.2%0.098%
11/17/2025 Ameriprise Financial Inc.39,095$2.62M0.0%-46.8%0.708%
11/14/2025 Creative Planning8,732$585K0.0%+37.4%0.159%


MLAB Institutional Ownership - Frequently Asked Questions

During the previous two years, 151 institutional investors and hedge funds held shares of Mesa Laboratories. The most heavily invested institutionals were Conestoga Capital Advisors LLC ($28.58M), Vanguard Group Inc. ($21.56M), Eagle Asset Management Inc. ($19.72M), Ranger Investment Management L.P. ($17.32M), Boston Partners ($16.75M), Diamond Hill Capital Management LLC Investment Advisor ($15.51M), and Geneva Capital Management LLC ($14.03M).Learn more on Mesa Laboratories' institutional investors.

90.60% of Mesa Laboratories' stock is owned by institutional investors. Learn more on MLAB's institutional investor holdings.

Of the 126 institutional investors that purchased Mesa Laboratories' stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Raymond James Financial Inc. ($511.81K), Boston Partners ($209.47K), Simcoe Capital Management LLC ($190.93K), Ranger Investment Management L.P. ($173.99K), Diamond Hill Capital Management LLC Investment Advisor ($155.77K), Diamond Hill Capital Management Inc. ($132.63K), and Wasatch Advisors LP ($115.67K).

Institutional investors have bought a total of 1,909,240 shares in the last 24 months. This purchase volume represents approximately $151.56M in transactions.

Of the 40 institutional investors that sold Mesa Laboratories' stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Russell Investments Group Ltd. ($4.19M), Conestoga Capital Advisors LLC ($139.69K), Glenmede Investment Management LP ($139.50K), Raymond James Financial Inc. ($138.15K), Millennium Management LLC ($129.35K), Royce & Associates LP ($99.05K), and Janus Henderson Group PLC ($76.25K).

Institutional investors have sold a total of 5,204,301 shares in the last 24 months. This volume of shares sold represents approximately $352.91M in transactions.


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Institutional ownership data for NASDAQ:MLAB is compiled from quarterly 13F filings submitted to the U.S. Securities and Exchange Commission (SEC), with the most recent received on 8/13/2026. New 13F filings are added each quarter as they're published.
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