MLAB · Mesa Laboratories Inc /Co/ · Holdings
$120.87
-0.04 (-0.03%)
At close · Sep 11
View the 10-K filed Jun 3, 2026
Customer concentration
— top customer 20% of revenue
One customer — 20% of revenue (fiscal 2026)
“In our Clinical Genomics division, a significant portion of revenues is generated from ongoing purchases by a relatively small number of established customers, with a single customer accounting for approximately 20% of the division's revenues in fiscal 2026.”
Market Cap
$676.37M
Shares
5.60M
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Holders: 158
Total Value: $498,368,483
Total Shares: 5,006,214
Showing 1–100
of 158 holdings by value
· page 1 of 2
Institutional Ownership Trend
26 quarters
Superinvestors Holding MLAB
All superinvestors →Holder Concentration
Across 158 13F filers · Δ vs Mar 31, 2026Top Holder
9.5%
+1.1 pts
Top 5
32.4%
+0.6 pts
Top 10
48.1%
−1.4 pts
HHI
361
Broadly held+6
Quarterly Activity
vs Mar 31, 2026
New
20
Increased
73
Decreased
38
Sold Out
23
Unchanged
27
Holder count:
-3
Institutional value:
+16.7%
Shares held:
+3.7%
Top Buyers
vs Mar 31, 2026| Institution | Added | Now Holds | Open |
|---|---|---|---|
| Large JACOBS LEVY EQUITY MANAGEMENT, INC | +86,421 | 130,838 | |
| Mega FMR LLC | +82,387 | 88,857 | |
| Small Long Path Partners LP | +71,543 | 477,126 | |
| Large WASATCH ADVISORS LP | +64,435 | 115,668 | |
| Mega BlackRock, Inc. | +46,701 | 440,552 |
Top Sellers
vs Mar 31, 2026| Institution | Sold | Now Holds | Open |
|---|---|---|---|
| Large ROYCE & ASSOCIATES LP | −47,834 | 113,395 | |
| Small MONIMUS CAPITAL MANAGEMENT, LP | −45,948 | 55,344 | |
| Mid Ranger Investment Management, L.P. | −28,915 | 173,988 | |
| Mega Russell Investments Group, Ltd. | −13,224 | 121,845 | |
| Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC | −7,961 | 54,463 |
Top New Positions
vs Mar 31, 2026| Institution | Acquired | Value (USD) | Open |
|---|---|---|---|
| Mega JANE STREET GROUP, LLC | 71,580 | $7,125,788 | |
| Mega Qube Research & Technologies Ltd | 37,402 | $3,723,369 | |
| Mega Jupiter Topco LLC | 30,996 | $3,085,651 | |
| Mid NFJ INVESTMENT GROUP, LLC | 14,256 | $1,419,183 | |
| Large MARSHALL WACE, LLP | 8,740 | $870,066 |
Top Sold-Out Positions
vs Mar 31, 2026| Institution | Previously Held | Last Value (USD) | Open |
|---|---|---|---|
| Large Select Equity Group, L.P. | 235,885 | $20,856,951 | |
| Small Roubaix Capital, LLC | 72,115 | $6,376,408 | |
| Mega JANUS HENDERSON GROUP PLC | 69,401 | $6,136,436 | |
| Mid BBR PARTNERS, LLC | 25,195 | $2,227,741 | |
| Large LAZARD ASSET MANAGEMENT LLC | 20,328 | $1,797,401 |
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Small Long Path Partners LP | $47,497,893 | 9.53% | 477,126 | Shares | 2026-07-31 | |
| Mega BlackRock, Inc. | $43,856,946 | 8.80% | 440,552 | Shares | 2026-08-07 | |
| Mega Boston Partners | $26,395,582 | 5.30% | 265,149 | Shares | 2026-08-04 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC | $23,638,844 | 4.74% | 237,457 | Shares | 2026-08-13 | |
| Mega AQR CAPITAL MANAGEMENT LLC | $20,282,211 | 4.07% | 203,739 | Shares | 2026-08-14 | |
| Mid Ranger Investment Management, L.P. | $17,320,505 | 3.48% | 173,988 | Shares | 2026-08-13 | |
| Mega MORGAN STANLEY | $15,627,254 | 3.14% | 156,979 | Shares | 2026-08-13 | |
| Large DIAMOND HILL CAPITAL MANAGEMENT INC | $15,507,003 | 3.11% | 155,771 | Shares | 2026-08-06 | |
| Mega RAYMOND JAMES FINANCIAL INC | $14,926,227 | 3.00% | 149,937 | Shares | 2026-08-14 | |
| Mega DIMENSIONAL FUND ADVISORS LP | $14,772,720 | 2.96% | 148,395 | Shares | 2026-08-11 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC | $13,905,342 | 2.79% | 139,682 | Shares | 2026-08-12 | |
| Mid KENNEDY CAPITAL MANAGEMENT LLC | $13,767,864 | 2.76% | 138,301 | Shares | 2026-08-14 | |
| Large JACOBS LEVY EQUITY MANAGEMENT, INC | $13,024,922 | 2.61% | 130,838 | Shares | 2026-08-14 | |
| Mega STATE STREET CORP | $12,373,268 | 2.48% | 124,292 | Shares | 2026-08-07 | |
| Mega Russell Investments Group, Ltd. | $12,129,662 | 2.43% | 121,845 | Shares | 2026-08-06 | |
| Large WASATCH ADVISORS LP | $11,514,749 | 2.31% | 115,668 | Shares | 2026-07-10 | |
| Large ROYCE & ASSOCIATES LP | $11,288,472 | 2.27% | 113,395 | Shares | 2026-08-14 | |
| Mid CRAWFORD INVESTMENT COUNSEL INC | $9,836,037 | 1.97% | 98,805 | Shares | 2026-08-14 | |
| Mega FMR LLC | $8,845,713 | 1.77% | 88,857 | Shares | 2026-08-13 | |
| Mega D. E. Shaw & Co., Inc. | $8,138,710 | 1.63% | 81,755 | Shares | 2026-08-14 | |
| Mega JANE STREET GROUP, LLC | $7,125,788 | 1.43% | 71,580 | Shares | 2026-08-14 | |
| Mega VANGUARD PORTFOLIO MANAGEMENT LLC | $6,903,792 | 1.39% | 69,350 | Shares | 2026-08-13 | |
| Small Meros Investment Management, LP | $6,765,617 | 1.36% | 67,962 | Shares | 2026-08-14 | |
| Mega NORTHERN TRUST CORP Bank | $6,544,913 | 1.31% | 65,745 | Shares | 2026-08-13 | |
| Mega GOLDMAN SACHS GROUP INC | $6,403,254 | 1.28% | 64,322 | Shares | 2026-08-14 | |
| Large GABELLI FUNDS LLC | $6,221,775 | 1.25% | 62,499 | Shares | 2026-08-12 | |
| Small MONIMUS CAPITAL MANAGEMENT, LP | $5,509,495 | 1.11% | 55,344 | Shares | 2026-08-14 | |
| Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $5,421,791 | 1.09% | 54,463 | Shares | 2026-08-14 | |
| Mega BANK OF AMERICA CORP /DE/ Bank | $4,972,720 | 1.00% | 49,952 | Shares | 2026-08-14 | |
| Mega Bank of New York Mellon Corp Bank | $4,539,678 | 0.91% | 45,602 | Shares | 2026-08-06 | |
| Small HERALD INVESTMENT MANAGEMENT Ltd | $4,230,875 | 0.85% | 42,500 | Shares | 2026-07-23 | |
| Mega VANGUARD FIDUCIARY TRUST CO Bank | $3,935,808 | 0.79% | 39,536 | Shares | 2026-08-13 | |
| Mega Qube Research & Technologies Ltd | $3,723,369 | 0.75% | 37,402 | Shares | 2026-08-14 | |
| Mega CITADEL ADVISORS LLC | $3,572,849 | 0.72% | 35,890 | Shares | 2026-09-02 | |
| Mega Jupiter Topco LLC | $3,085,651 | 0.62% | 30,996 | Shares | 2026-08-14 | |
| Mega TWO SIGMA INVESTMENTS, LP | $2,910,742 | 0.58% | 29,239 | Shares | 2026-08-14 | |
| Large RENAISSANCE TECHNOLOGIES LLC | $2,876,995 | 0.58% | 28,900 | Shares | 2026-08-13 | |
| Large Man Group plc | $2,396,168 | 0.48% | 24,070 | Shares | 2026-08-14 | |
| Large Point72 Asset Management, L.P. | $2,241,268 | 0.45% | 22,514 | Shares | 2026-08-14 | |
| Mega FRANKLIN RESOURCES INC | $2,180,641 | 0.44% | 21,905 | Shares | 2026-08-13 | |
| Mega AMERICAN CENTURY COMPANIES INC | $2,027,236 | 0.41% | 20,364 | Shares | 2026-08-12 | |
| Mid RICE HALL JAMES & ASSOCIATES, LLC | $1,888,264 | 0.38% | 18,968 | Shares | 2026-08-07 | |
| Large STATE OF WISCONSIN INVESTMENT BOARD | $1,882,092 | 0.38% | 18,906 | Shares | 2026-08-14 | |
| Mid SEGALL BRYANT & HAMILL, LLC | $1,802,651 | 0.36% | 18,108 | Shares | 2026-08-12 | |
| Mid Numerai GP LLC | $1,768,903 | 0.35% | 17,769 | Shares | 2026-08-14 | |
| Mid XTX Topco Ltd | $1,739,636 | 0.35% | 17,475 | Shares | 2026-08-14 | |
| Large KING LUTHER CAPITAL MANAGEMENT CORP | $1,733,265 | 0.35% | 17,411 | Shares | 2026-08-10 | |
| Large Creative Planning | $1,654,022 | 0.33% | 16,615 | Shares | 2026-08-13 | |
| Mega ROYAL BANK OF CANADA Bank | $1,473,638 | 0.30% | 14,803 | Shares | 2026-08-14 | |
| Mid Engineers Gate Manager LP | $1,466,471 | 0.29% | 14,731 | Shares | 2026-08-14 | |
| Large Mariner, LLC | $1,434,216 | 0.29% | 14,407 | Shares | 2026-08-13 | |
| Mega WELLS FARGO & COMPANY/MN | $1,432,125 | 0.29% | 14,386 | Shares | 2026-08-14 | |
| Mid NFJ INVESTMENT GROUP, LLC | $1,419,183 | 0.28% | 14,256 | Shares | 2026-08-11 | |
| Mega Nuveen, LLC | $1,383,346 | 0.28% | 13,896 | Shares | 2026-08-11 | |
| Large IEQ CAPITAL, LLC | $1,351,889 | 0.27% | 13,580 | Shares | 2026-08-11 | |
| Mega PRINCIPAL FINANCIAL GROUP INC | $1,201,468 | 0.24% | 12,069 | Shares | 2026-08-04 | |
| Mega Invesco Ltd. | $1,180,860 | 0.24% | 11,862 | Shares | 2026-08-14 | |
| Small GLOBEFLEX CAPITAL L P | $1,152,888 | 0.23% | 11,581 | Shares | 2026-08-12 | |
| Large STIFEL FINANCIAL CORP | $1,115,158 | 0.22% | 11,202 | Shares | 2026-08-12 | |
| Mid Y-Intercept (Hong Kong) Ltd | $996,495 | 0.20% | 10,010 | Shares | 2026-07-14 | |
| Mega ENVESTNET ASSET MANAGEMENT INC | $877,632 | 0.18% | 8,816 | Shares | 2026-08-03 | |
| Large MARSHALL WACE, LLP | $870,066 | 0.17% | 8,740 | Shares | 2026-08-13 | |
| Small CM WEALTH ADVISORS LLC | $830,346 | 0.17% | 8,341 | Shares | 2026-08-10 | |
| Large GAMCO INVESTORS, INC. ET AL | $830,247 | 0.17% | 8,340 | Shares | 2026-08-12 | |
| Mega UBS Group AG | $773,801 | 0.16% | 7,773 | Shares | 2026-08-13 | |
| Mid CenterBook Partners LP | $770,417 | 0.15% | 7,739 | Shares | 2026-08-11 | |
| Large Quadrature Capital Ltd | $764,743 | 0.15% | 7,682 | Shares | 2026-08-07 | |
| Large Vident Advisory, LLC | $757,376 | 0.15% | 7,608 | Shares | 2026-08-12 | |
| Large Cerity Partners LLC | $737,963 | 0.15% | 7,413 | Shares | 2026-08-14 | |
| Large LOS ANGELES CAPITAL MANAGEMENT LLC | $735,475 | 0.15% | 7,388 | Shares | 2026-08-13 | |
| Large Quantinno Capital Management LP | $703,519 | 0.14% | 7,067 | Shares | 2026-08-13 | |
| Large SEI INVESTMENTS CO | $672,857 | 0.14% | 6,759 | Shares | 2026-08-14 | |
| Large MERCER GLOBAL ADVISORS INC /ADV | $672,559 | 0.13% | 6,756 | Shares | 2026-08-19 | |
| Mega RHUMBLINE ADVISERS | $653,048 | 0.13% | 6,560 | Shares | 2026-08-12 | |
| Mega ALLIANCEBERNSTEIN L.P. | $647,075 | 0.13% | 6,500 | Shares | 2026-08-14 | |
| Mega CANADA PENSION PLAN INVESTMENT BOARD Pension | $627,165 | 0.13% | 6,300 | Shares | 2026-08-14 | |
| Mega LPL Financial LLC | $601,680 | 0.12% | 6,044 | Shares | 2026-08-07 | |
| Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. Mutual Fund | $558,176 | 0.11% | 5,607 | Shares | 2026-08-14 | |
| Large STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM Pension | $542,049 | 0.11% | 5,445 | Shares | 2026-08-10 | |
| Mega DEUTSCHE BANK AG\ Bank | $535,578 | 0.11% | 5,380 | Shares | 2026-08-07 | |
| Mid Brevan Howard Capital Management LP | $446,879 | 0.09% | 4,489 | Shares | 2026-08-14 | |
| Mega PRICE T ROWE ASSOCIATES INC /MD/ | $437,323 | 0.09% | 4,393 | Shares | 2026-08-14 | |
| Large WEALTH ENHANCEMENT ADVISORY SERVICES, LLC | $425,576 | 0.09% | 4,275 | Shares | 2026-07-15 | |
| Mid Magnetar Financial LLC | $412,037 | 0.08% | 4,139 | Shares | 2026-08-14 | |
| Mega JPMORGAN CHASE & CO | $393,120 | 0.08% | 3,949 | Shares | 2026-08-12 | |
| Large STRS OHIO | $368,335 | 0.07% | 3,700 | Shares | 2026-07-30 | |
| Mid SEIZERT CAPITAL PARTNERS, LLC | $343,049 | 0.07% | 3,446 | Shares | 2026-08-05 | |
| Large CAPTRUST FINANCIAL ADVISORS | $325,827 | 0.07% | 3,273 | Shares | 2026-08-13 | |
| Mid PRELUDE CAPITAL MANAGEMENT, LLC | $312,686 | 0.06% | 3,141 | Shares | 2026-08-14 | |
| Large MetLife Investment Management, LLC | $308,007 | 0.06% | 3,094 | Shares | 2026-08-14 | |
| Small Dynamic Technology Lab Private Ltd | $290,785 | 0.06% | 2,921 | Shares | 2026-08-13 | |
| Mid Graham Capital Management, L.P. | $284,613 | 0.06% | 2,859 | Shares | 2026-08-14 | |
| Small Integrated Quantitative Investments LLC | $257,834 | 0.05% | 2,590 | Shares | 2026-08-14 | |
| Mega CITIGROUP INC | $249,869 | 0.05% | 2,510 | Shares | 2026-08-03 | |
| Micro Kings Path Partners LLC | $242,205 | 0.05% | 2,433 | Shares | 2026-07-14 | |
| Large Corient Private Wealth LLC | $241,209 | 0.05% | 2,423 | Shares | 2026-08-27 | |
| Small Topline Capital Management, LLC | $236,331 | 0.05% | 2,374 | Shares | 2026-08-14 | |
| Large Baird Financial Group, Inc. | $231,453 | 0.05% | 2,325 | Shares | 2026-08-12 | |
| Large NEW YORK STATE COMMON RETIREMENT FUND Pension | $213,335 | 0.04% | 2,143 | Shares | 2026-07-29 | |
| Mega Vanguard Global Advisers, LLC | $198,303 | 0.04% | 1,992 | Shares | 2026-08-13 |