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Mesa Laboratories (MLAB) Institutional Ownership

Mesa Laboratories logo
$139.01 +3.81 (+2.82%)
Closing price 11/13/2026 04:00 PM Eastern
Extended Trading
$136.04 -2.97 (-2.14%)
As of 11/13/2026 07:30 PM 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)
82
Total
Institutional Inflows
(last 12 months)
$148.58M
Number of
Institutional Sellers
(last 12 months)
35
Total
Institutional Outflows
(last 12 months)
$91.18M
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Skip Chart & View Institutional Buying and Selling Data

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
11/13/2026Caxton Associates LLP2,879$374K0.0%N/A0.051%
11/13/2026State Board of Administration of Florida Retirement System15,124$1.97M0.0%+177.8%0.269%
11/12/2026 State Street Corp135,509$17.61M0.0%-45.5%2.411%
11/11/2026 Private Advisor Group LLC1,929$251K0.0%N/A0.034%
11/11/2026 Boston Partners3,783$492K0.0%-98.6%0.068%
11/10/2026 Meeder Asset Management Inc.376$49K0.0%N/A0.007%
11/10/2026 Public Sector Pension Investment Board15,605$2.00M0.0%N/A0.279%
11/9/2026 Royce & Associates LP39,598$5.15M0.0%-65.1%0.707%
11/6/2026 Aberdeen Group plc101,100$13.14M0.0%N/A1.805%
11/6/2026 William Blair Investment Management LLC130,323$16.93M0.1%N/A2.327%
11/6/2026 Russell Investments Group Ltd.71,823$9.33M0.0%-41.1%1.283%
11/5/2026 Keybank National Association OH3,755$488K0.0%N/A0.067%
11/3/2026 CenterBook Partners LP5,756$748K0.0%-25.6%0.103%
10/29/2026 State of Wyoming702$91K0.0%N/A0.013%
10/23/2026 Sterling Capital Management LLC2,087$271K0.0%+10,884.2%0.037%
10/21/2026 Kings Path Partners LLC2,433$316K0.1%N/A0.043%
10/17/2026 Burns Matteson Capital Management LLC2,715$353K0.1%N/A0.048%
9/9/2026Engineers Gate Manager LP14,731$1.47M0.0%+291.2%0.263%
9/9/2026Integrated Wealth Concepts LLC871$87K0.0%N/A0.016%
9/9/2026Baird Financial Group Inc.2,325$231K0.0%N/A0.042%
9/8/2026 Allworth Financial LP523$52K0.0%+110.0%0.009%
8/27/2026Corient Private Wealth LP2,423$241K0.0%N/A0.043%
8/13/2026 Ranger Investment Management L.P.173,988$17.32M1.1%N/A3.107%
8/13/2026Globeflex 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%
5/19/2026Bank 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%
5/18/2026Royal 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%
5/16/2026Quantinno Capital Management LP4,318$382K0.0%+17.9%0.078%
5/16/2026Lazard 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%
5/14/2026Inceptionr LLC4,078$361K0.1%N/A0.074%
5/14/2026 Sei Investments Co.7,403$655K0.0%-11.6%0.134%
5/14/2026Globeflex 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%
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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%
4/16/2026SG 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%
2/18/2026XTX Topco Ltd12,601$989K0.0%N/A0.228%
2/18/2026Tudor Investment Corp ET AL27,426$2.15M0.0%+332.5%0.496%
2/18/2026Quadrature Capital Ltd13,528$1.06M0.0%N/A0.245%
2/18/2026Numerai GP LLC14,909$1.17M0.1%+313.0%0.270%
2/18/2026Millennium Management LLC4,465$351K0.0%-96.7%0.081%
2/18/2026Man Group plc13,387$1.05M0.0%N/A0.242%
2/18/2026Irenic Capital Management LP25,000$1.96M0.1%N/A0.452%
2/18/2026Janus Henderson Group PLC116,642$9.16M0.0%-19.9%2.111%
2/18/2026Engineers Gate Manager LP3,031$238K0.0%N/A0.055%
2/18/2026Balyasny Asset Management L.P.3,792$298K0.0%-4.5%0.069%
2/17/2026AQR Capital Management LLC70,138$5.51M0.0%+114.9%1.271%
2/17/2026Trexquant Investment LP46,121$3.62M0.0%+83.8%0.836%
2/17/2026Price T Rowe Associates Inc. MD3,141$247K0.0%-23.6%0.057%
2/17/2026Monimus 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%
2/17/2026Crawford Investment Counsel Inc.81,220$6.38M0.1%-1.5%1.471%
2/17/2026State of Wisconsin Investment Board22,606$1.78M0.0%+22.8%0.410%
2/17/2026ExodusPoint Capital Management LP6,937$545K0.0%N/A0.126%
2/17/2026Royal Bank of Canada5,457$429K0.0%-79.7%0.099%
2/17/2026Graham Capital Management L.P.3,723$292K0.0%N/A0.067%
2/17/2026Rice Hall James & Associates LLC14,217$1.12M0.1%-17.1%0.258%
2/17/2026Meros 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%
2/16/2026Kennedy 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%
2/13/2026Marshall Wace LLP7,137$560K0.0%-51.1%0.129%
2/13/2026 Stifel Financial Corp11,275$885K0.0%+11.6%0.204%
2/13/2026Jacobs Levy Equity Management Inc.38,842$3.05M0.0%+907.1%0.704%
2/13/2026Charles 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%
2/13/2026Dynamic Technology Lab Private Ltd6,190$486K0.1%N/A0.112%
2/13/2026 Caitong International Asset Management Co. Ltd341$27K0.1%N/A0.006%
2/13/2026Wells 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%
2/12/2026State 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%
2/12/2026EntryPoint Capital LLC3,469$272K0.1%-18.3%0.063%
2/12/2026 Geneva Capital Management LLC178,713$14.03M0.3%-6.6%3.238%
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2/11/2026 Deutsche Bank AG4,440$349K0.0%+5.9%0.080%
2/11/2026Cerity 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%
2/10/2026Goldman Sachs Group Inc.55,268$4.34M0.0%+32.3%1.001%
2/10/2026Northwestern 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%
2/6/2026GSA Capital Partners LLP11,614$912K0.1%+7.9%0.210%


MLAB Institutional Ownership - Frequently Asked Questions

During the previous two years, 155 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), State Street Corp ($17.61M), Ranger Investment Management L.P. ($17.32M), William Blair Investment Management LLC ($16.93M), 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 132 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 William Blair Investment Management LLC ($130.32K).

Institutional investors have bought a total of 1,600,086 shares in the last 24 months. This purchase volume represents approximately $148.58M in transactions.

Of the 32 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: Boston Partners ($261.37K), Millennium Management LLC ($129.35K), State Street Corp ($113.08K), Janus Henderson Group PLC ($76.25K), Royce & Associates LP ($73.80K), Russell Investments Group Ltd. ($50.02K), and Ameriprise Financial Inc. ($34.42K).

Institutional investors have sold a total of 835,488 shares in the last 24 months. This volume of shares sold represents approximately $91.18M 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 11/13/2026. New 13F filings are added each quarter as they're published.
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