MLAB Institutional Ownership & Shareholders
MESA LABORATORIES INC (MLAB) is currently held by 161 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $541.04M based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Wasatch Advisors Lp is currently the largest disclosed institutional shareholder of MLAB tracked by InsiderSet, reporting ownership valued at approximately $50.30M in its September 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $49.48M, representing an estimated loss of -1.64% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 51% of the total disclosed MLAB value among the investors covered in this analysis. Major shareholders include Wasatch Advisors Lp, Long Path Partners Lp, Blackrock, Inc., and several other long-term asset managers with concentrated positions in MESA LABORATORIES INC (MLAB).
This page ranks the largest institutional MLAB shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
161
Total Reported Value
$541.04M
Largest Holder
Wasatch Advisors Lp
Largest Position
$50.30M
Insider Transactions (90d)
10
Latest Filing Quarter
Q2 2026
New Institutional Positions
74
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Wasatch Advisors Lp | 0.37% | 387,129 | $50,303,542 | $49,478,957 | -$824,585 | -1.64% | |
| Long Path Partners Lp | 20.24% | 477,126 | $47,497,893 | $60,981,474 | +$13,483,581 | +28.39% | |
| Blackrock, Inc. | 0.00% | 440,552 | $43,856,952 | $56,306,951 | +$12,449,999 | +28.39% | |
| Boston Partners | 0.02% | 265,149 | $26,391,020 | $33,888,694 | +$7,497,674 | +28.41% | |
| Vanguard Capital Management Llc | 0.00% | 237,457 | $23,638,844 | $30,349,379 | +$6,710,535 | +28.39% | |
| Aqr Capital Management Llc | 0.01% | 203,736 | $20,281,941 | $26,039,498 | +$5,757,557 | +28.39% | |
| Ranger Investment Management, L.P. | 1.10% | 173,988 | $17,320,505 | $22,237,406 | +$4,916,901 | +28.39% | |
| Morgan Stanley | 0.00% | 156,979 | $15,627,368 | $20,063,486 | +$4,436,118 | +28.39% | |
| Diamond Hill Capital Management Inc | 0.12% | 155,771 | $15,507,003 | $19,909,092 | +$4,402,089 | +28.39% | |
| Raymond James Financial Inc | 0.00% | 149,937 | $14,926,243 | $19,163,448 | +$4,237,205 | +28.39% | |
| Dimensional Fund Advisors Lp | 0.00% | 148,395 | $14,772,712 | $18,966,365 | +$4,193,653 | +28.39% | |
| Geode Capital Management, Llc | 0.00% | 139,682 | $13,909,131 | $17,852,756 | +$3,943,625 | +28.35% | |
| Kennedy Capital Management Llc | 0.24% | 138,301 | $13,767,865 | $17,676,251 | +$3,908,386 | +28.39% | |
| Jacobs Levy Equity Management, Inc | 0.05% | 130,838 | $13,024,923 | $16,722,405 | +$3,697,482 | +28.39% | |
| State Street Corp | 0.00% | 124,292 | $12,373,148 | $15,885,761 | +$3,512,613 | +28.39% | |
| Russell Investments Group, Ltd. | 0.01% | 121,845 | $12,129,687 | $15,573,009 | +$3,443,322 | +28.39% | |
| Royce & Associates Lp | 0.09% | 113,395 | $11,288,472 | $14,493,015 | +$3,204,543 | +28.39% | |
| Crawford Investment Counsel Inc | 0.16% | 98,805 | $9,836,038 | $12,628,267 | +$2,792,229 | +28.39% | |
| Fmr Llc | 0.00% | 88,857 | $8,845,714 | $11,356,813 | +$2,511,099 | +28.39% | |
| D. E. Shaw & Co., Inc. | 0.01% | 81,755 | $8,138,710 | $10,449,107 | +$2,310,397 | +28.39% | |
| Jane Street Group, Llc | 0.00% | 71,580 | $7,125,789 | $9,148,640 | +$2,022,851 | +28.39% | |
| Vanguard Portfolio Management Llc | 0.00% | 69,350 | $6,903,793 | $8,863,624 | +$1,959,831 | +28.39% | |
| Meros Investment Management, Lp | 2.15% | 67,962 | $6,765,617 | $8,686,223 | +$1,920,606 | +28.39% | |
| Northern Trust Corp | 0.00% | 65,745 | $6,544,915 | $8,402,868 | +$1,857,953 | +28.39% | |
| Goldman Sachs Group Inc | 0.00% | 64,322 | $6,403,255 | $8,220,995 | +$1,817,740 | +28.39% | |
| Gabelli Funds Llc | 0.04% | 62,499 | $6,221,775 | $7,987,997 | +$1,766,222 | +28.39% | |
| Janus Henderson Group Plc | 0.00% | 69,401 | $6,136,436 | $8,870,142 | +$2,733,706 | +44.55% | |
| Monimus Capital Management, Lp | 1.40% | 55,344 | $5,509,495 | $7,073,517 | +$1,564,022 | +28.39% | |
| Charles Schwab Investment Management Inc | 0.00% | 54,463 | $5,421,792 | $6,960,916 | +$1,539,124 | +28.39% | |
| Bank Of America Corp | 0.00% | 49,952 | $4,972,722 | $6,384,365 | +$1,411,643 | +28.39% | |
| Bank Of New York Mellon Corp | 0.00% | 45,602 | $4,539,719 | $5,828,392 | +$1,288,673 | +28.39% | |
| Principal Financial Group Inc | 0.00% | 30,421 | $3,952,905 | $3,888,108 | -$64,797 | -1.64% | |
| Vanguard Fiduciary Trust Co | 0.00% | 39,536 | $3,935,809 | $5,053,096 | +$1,117,287 | +28.39% | |
| Qube Research & Technologies Ltd | 0.00% | 37,402 | $3,723,369 | $4,780,350 | +$1,056,981 | +28.39% | |
| Citadel Advisors Llc | 0.00% | 35,890 | $3,572,850 | $4,587,101 | +$1,014,251 | +28.39% | |
| Two Sigma Investments, Lp | 0.00% | 29,239 | $2,910,742 | $3,737,037 | +$826,295 | +28.39% | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 28,900 | $2,876,995 | $3,693,709 | +$816,714 | +28.39% |
| Bbr Partners, Llc | 0.12% | 25,195 | $2,508,162 | $3,220,173 | +$712,011 | +28.39% | |
| Man Group Plc | 0.00% | 24,070 | $2,396,169 | $3,076,387 | +$680,218 | +28.39% | |
| Point72 Asset Management, L.P. | 0.00% | 22,514 | $2,241,269 | $2,877,514 | +$636,245 | +28.39% | |
| American Century Companies Inc | 0.00% | 20,364 | $2,027,236 | $2,602,723 | +$575,487 | +28.39% | |
| Creative Planning | 0.00% | 14,717 | $1,912,347 | $1,880,980 | -$31,367 | -1.64% | |
| Rice Hall James & Associates, Llc | 0.09% | 18,968 | $1,888,264 | $2,424,300 | +$536,036 | +28.39% | |
| State Of Wisconsin Investment Board | 0.00% | 18,906 | $1,882,092 | $2,416,376 | +$534,284 | +28.39% | |
| Segall Bryant & Hamill, Llc | 0.02% | 18,108 | $1,802,651 | $2,314,383 | +$511,732 | +28.39% | |
| Numerai Gp Llc | 0.14% | 17,769 | $1,768,904 | $2,271,056 | +$502,152 | +28.39% | |
| Xtx Topco Ltd | 0.02% | 17,475 | $1,739,636 | $2,233,480 | +$493,844 | +28.39% | |
| King Luther Capital Management Corp | 0.01% | 17,411 | $1,733,265 | $2,225,300 | +$492,035 | +28.39% | |
| Royal Bank Of Canada | 0.00% | 14,803 | $1,474,000 | $1,891,971 | +$417,971 | +28.36% | |
| Engineers Gate Manager Lp | 0.02% | 14,731 | $1,466,471 | $1,882,769 | +$416,298 | +28.39% |
Frequently asked questions about MLAB
Who are the largest institutional holders of MLAB?
The largest institutional holders of MLAB reported in the latest SEC Form 13F filings include Wasatch Advisors Lp, Long Path Partners Lp, Blackrock, Inc., Boston Partners, and Vanguard Capital Management Llc. InsiderSet ranks institutional holders by their latest reported MLAB position.
What is MLAB institutional ownership?
This page tracks MLAB positions reported by institutional investment managers through SEC Form 13F. MESA LABORATORIES INC (MLAB) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own MLAB?
InsiderSet currently tracks 161 institutional managers reporting MLAB holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of MLAB shareholders.
How much MLAB stock do institutions own?
Institutional investment managers disclosed approximately $541.04M in MLAB holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was MLAB institutional ownership last updated?
The latest MLAB institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional MLAB holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its MLAB position after the reporting date.
Are institutions buying or selling MLAB?
Institutional buying and selling can be analyzed by comparing MLAB positions across consecutive 13F reporting periods. InsiderSet's MLAB Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View MLAB ownership changes.
How has MLAB institutional ownership changed over time?
InsiderSet tracks MLAB institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.