MLAB · Mesa Laboratories Inc · Holdings
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.”
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.
Institutional Ownership Trend
Superinvestors Holding MLAB
All superinvestors →Holder Concentration
Across 159 13F filersWho Holds MLAB
Last 8 quarters through Sep 30, 2026 (filing window open)Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.
Jun 30, 2026, the newest closed quarter: 159 filers, like-for-like change +4.4%; actively managed books +4.7%; index-like books +3.6%.
| Holder type | Share | Filers | Change |
|---|---|---|---|
| Registered adviser | 61.9% | 87 | -1.9% |
| Exempt adviser | 1.2% | 4 | +860.3% |
| Adviser | 0.7% | 3 | -35.4% |
| Bank | 6.6% | 13 | +1.3% |
| Insurer | 0.2% | 1 | +8.8% |
| Broker-dealer | 0.1% | 1 | +32.7% |
| Benefit plan | 0.6% | 4 | -20.9% |
| Non-US | 1.1% | 4 | -16.0% |
| Holding company | 15.1% | 6 | +18.3% |
| Unknown | 12.6% | 36 | +26.2% |
| Style | Share | Filers | Change |
|---|---|---|---|
| Index-like | 26.7% | 17 | +3.6% |
| Systematic-like | 5.6% | 14 | +63.0% |
| Concentrated | 11.0% | 25 | +19.6% |
| Diversified active | 56.6% | 103 | -1.2% |
| Not measured | 0.0% | 0 | — |
| Unknown | 0.0% | 0 | — |
| Turnover | Share | Filers | Change |
|---|---|---|---|
| Low turnover | 44.3% | 96 | +9.7% |
| Medium turnover | 40.4% | 30 | -4.9% |
| High turnover | 7.8% | 23 | +52.2% |
| Unknown | 7.5% | 10 | -3.9% |
| Not measured | 0.0% | 0 | — |
| Holding horizon | Share | Filers | Change |
|---|---|---|---|
| Short horizon | 9.8% | 17 | -8.0% |
| Medium horizon | 24.4% | 26 | +16.1% |
| Long horizon | 59.8% | 107 | +3.9% |
| Unknown | 6.0% | 9 | -8.5% |
| Not measured | 0.0% | 0 | — |
| 13F book size | Share | Filers | Change |
|---|---|---|---|
| Under $1B | 13.4% | 25 | -6.3% |
| $1B to $10B | 11.4% | 38 | +4.7% |
| $10B to $100B | 16.9% | 45 | -10.9% |
| $100B or more | 58.3% | 51 | +13.0% |
| Not measured | 0.0% | 0 | — |
| Client base | Share | Filers | Change |
|---|---|---|---|
| Individuals and high net worth | 4.2% | 38 | +17.9% |
| Pooled investment vehicles | 13.6% | 13 | -26.6% |
| Registered funds and BDCs | 25.3% | 13 | +1.0% |
| Pension and profit sharing plans | 1.4% | 3 | +1.2% |
| Insurance companies | 0.1% | 2 | +6.1% |
| Governments and sovereign funds | 0.3% | 3 | -50.0% |
| Corporations | 3.5% | 1 | -14.3% |
| Other investment advisers | 0.0% | 2 | 0.0% |
| Diversified | 13.5% | 12 | +37.6% |
| Other | 0.0% | 0 | — |
| Unknown | 38.1% | 72 | +16.5% |
| Private funds | Share | Filers | Change |
|---|---|---|---|
| Hedge funds | 20.8% | 23 | -13.5% |
| Private equity funds | 11.0% | 9 | +16.6% |
| Venture capital funds | 0.0% | 1 | +15.6% |
| Real estate funds | 0.0% | 2 | +55.6% |
| Other private funds | 13.4% | 13 | +3.4% |
| Mixed private funds | 0.1% | 1 | +22.6% |
| Private funds, type not stated | 4.1% | 2 | -2.0% |
| No private funds | 13.6% | 40 | +9.5% |
| Securitized asset funds | 0.0% | 0 | — |
| Unknown | 36.9% | 68 | +13.2% |
| Location | Share | Filers | Change |
|---|---|---|---|
| United States | 96.1% | 141 | +3.0% |
| Outside the US | 3.9% | 18 | +54.5% |
The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.
How the mix is measured
Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.
Excluded 1 holder with no observed 2026-03-31 13F and 3 holders with no observed 2026-06-30 13F. Compared across CIK changes: JANUS HENDERSON GROUP PLC continues as Jupiter Topco LLC.
Conviction and Crowding
159 13F filers, quarter ended Jun 30, 2026Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.
Managers in the top fifth by current three-year FundScore alpha were net buyers of $238,961 (1 buying, 0 selling).
Estimated Holder Cost Basis
Quarter ended Jun 30, 2026, on that quarter's share basisEstimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.
Estimated cost covers 49.6% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.
Shared Holders
Companies MLAB's active holders also own, quarter ended Jun 30, 2026| # | Company | Shared holders |
|---|---|---|
| 1 | NCNO nCino, Inc. | 4 |
| 2 | SLP Simulations Plus, Inc. | 3 |
| 3 | KRUS Kura Sushi USA, Inc. | 3 |
| 4 | BLFS Biolife Solutions Inc | 3 |
| 5 | PEGA Pegasystems Inc | 3 |
| 6 | WK Workiva Inc | 3 |
| 7 | ALKT Alkami Technology, Inc. | 3 |
| 8 | WTTR Select Water Solutions, Inc. | 3 |
| 9 | PDFS Pdf Solutions Inc | 3 |
| 10 | OUST Ouster, Inc. | 3 |
Shareholder Targets
13F filers that own its peers but not MLAB, quarter ended Jun 30, 2026Found through its holder-overlap peers: NCNO, SLP, KRUS, BLFS, PEGA, WK, ALKT, WTTR, PDFS, OUST, SEI, UNP, SBUX, AMZN, MSFT, INTC, PG, TXN, CVX, CSCO. 6,862 filers in all.
| # | Filer | In peers | Largest peers |
|---|---|---|---|
| 1 | NORGES BANK Non-US, Index-like | $102,701,513,002 10 held | MSFT, AMZN, INTC |
| 2 | Capital Research Global Investors Adviser, Diversified active | $101,212,630,911 9 held | MSFT, AMZN, SBUX |
| 3 | Capital World Investors Adviser, Diversified active | $63,661,953,877 7 held | MSFT, AMZN, SBUX |
| 4 | UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC Registered adviser, Index-like | $60,933,063,260 20 held | MSFT, AMZN, INTC |
| 5 | Amundi Holding company, Index-like | $46,731,589,978 16 held | MSFT, AMZN, INTC |
| 6 | Capital International Investors Adviser, Diversified active | $42,035,040,809 9 held | MSFT, AMZN, INTC |
| 7 | WELLINGTON MANAGEMENT GROUP LLP Holding company, Diversified active | $41,337,269,480 15 held | MSFT, AMZN, TXN |
| 8 | AMERIPRISE FINANCIAL INC Adviser, Diversified active | $31,447,531,424 19 held | MSFT, AMZN, CSCO |
| 9 | NVIDIA CORP Unknown, Concentrated | $29,989,261,126 1 held | INTC |
| 10 | Fisher Asset Management, LLC Adviser, Diversified active | $29,733,558,161 11 held | MSFT, AMZN, CSCO |
Fund Ownership of MLAB by Fund Type
Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026Index funds and index ETFs hold 13.49% of shares outstanding.
| Fund type | Of shares outstanding | Shares |
|---|---|---|
| Index funds | 3.26% | 182,338 |
| Index ETFs | 10.23% | 572,402 |
| Active ETFs | 2.86% | 159,833 |
| Active funds | 13.14% | 735,356 |
| Unclassified | 2.57% | 143,734 |
| All registered funds | 32.05% | 1,793,663 |
How fund types are measured
Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Large WASATCH ADVISORS LP Registered adviser | $50,303,542 | 9.31% | 387,129 | Shares | 2026-10-13 | |
| Small Long Path Partners LP Registered adviser | $47,497,893 | 8.79% | 477,126 | Shares | 2026-07-31 | |
| Mega BlackRock, Inc. Holding company | $43,856,946 | 8.12% | 440,552 | Shares | 2026-08-07 | |
| Mega Boston Partners Registered adviser | $26,395,582 | 4.88% | 265,149 | Shares | 2026-08-04 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC Registered adviser | $23,638,844 | 4.37% | 237,457 | Shares | 2026-08-13 | |
| Mega AQR CAPITAL MANAGEMENT LLC Registered adviser | $20,282,211 | 3.75% | 203,739 | Shares | 2026-08-14 | |
| Mid Ranger Investment Management, L.P. Registered adviser | $17,320,505 | 3.21% | 173,988 | Shares | 2026-08-13 | |
| Mega MORGAN STANLEY Holding company | $15,627,254 | 2.89% | 156,979 | Shares | 2026-08-13 | |
| Large DIAMOND HILL CAPITAL MANAGEMENT INC Registered adviser | $15,507,003 | 2.87% | 155,771 | Shares | 2026-08-06 | |
| Mega RAYMOND JAMES FINANCIAL INC | $14,926,227 | 2.76% | 149,937 | Shares | 2026-08-14 | |
| Mega DIMENSIONAL FUND ADVISORS LP Registered adviser | $14,772,720 | 2.73% | 148,395 | Shares | 2026-08-11 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC Registered adviser | $13,905,342 | 2.57% | 139,682 | Shares | 2026-08-12 | |
| Mid KENNEDY CAPITAL MANAGEMENT LLC Registered adviser | $13,767,864 | 2.55% | 138,301 | Shares | 2026-08-14 | |
| Large JACOBS LEVY EQUITY MANAGEMENT, INC Registered adviser | $13,024,922 | 2.41% | 130,838 | Shares | 2026-08-14 | |
| Mega STATE STREET CORP Bank | $12,373,268 | 2.29% | 124,292 | Shares | 2026-09-22 | |
| Mega Russell Investments Group, Ltd. | $12,129,662 | 2.24% | 121,845 | Shares | 2026-08-06 | |
| Large ROYCE & ASSOCIATES LP Registered adviser | $11,288,472 | 2.09% | 113,395 | Shares | 2026-08-14 | |
| Mid CRAWFORD INVESTMENT COUNSEL INC Registered adviser | $9,836,037 | 1.82% | 98,805 | Shares | 2026-08-14 | |
| Mega FMR LLC Holding company | $8,845,713 | 1.64% | 88,857 | Shares | 2026-08-13 | |
| Mega D. E. Shaw & Co., Inc. | $8,138,710 | 1.51% | 81,755 | Shares | 2026-08-14 | |
| Mega JANE STREET GROUP, LLC | $7,125,788 | 1.32% | 71,580 | Shares | 2026-08-14 | |
| Mega VANGUARD PORTFOLIO MANAGEMENT LLC Registered adviser | $6,903,792 | 1.28% | 69,350 | Shares | 2026-08-13 | |
| Small Meros Investment Management, LP Registered adviser | $6,765,617 | 1.25% | 67,962 | Shares | 2026-08-14 | |
| Mega NORTHERN TRUST CORP Bank | $6,544,913 | 1.21% | 65,745 | Shares | 2026-08-13 | |
| Mega GOLDMAN SACHS GROUP INC Holding company | $6,403,254 | 1.18% | 64,322 | Shares | 2026-08-14 | |
| Large GABELLI FUNDS LLC Registered adviser | $6,221,775 | 1.15% | 62,499 | Shares | 2026-08-12 | |
| Small MONIMUS CAPITAL MANAGEMENT, LP Registered adviser | $5,509,495 | 1.02% | 55,344 | Shares | 2026-08-14 | |
| Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC Registered adviser | $5,421,791 | 1.00% | 54,463 | Shares | 2026-08-14 | |
| Mega BANK OF AMERICA CORP /DE/ Bank | $4,972,720 | 0.92% | 49,952 | Shares | 2026-08-14 | |
| Mega Bank of New York Mellon Corp Bank | $4,539,678 | 0.84% | 45,602 | Shares | 2026-08-06 | |
| Small HERALD INVESTMENT MANAGEMENT Ltd Non-US | $4,230,875 | 0.78% | 42,500 | Shares | 2026-07-23 | |
| Mega VANGUARD FIDUCIARY TRUST CO | $3,935,808 | 0.73% | 39,536 | Shares | 2026-08-13 | |
| Mega Qube Research & Technologies Ltd Exempt adviser | $3,723,369 | 0.69% | 37,402 | Shares | 2026-08-14 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $3,572,849 | 0.66% | 35,890 | Shares | 2026-09-02 | |
| Mega Jupiter Topco LLC | $3,085,651 | 0.57% | 30,996 | Shares | 2026-08-14 | |
| Mega TWO SIGMA INVESTMENTS, LP Registered adviser | $2,910,742 | 0.54% | 29,239 | Shares | 2026-08-14 | |
| Large RENAISSANCE TECHNOLOGIES LLC Registered adviser | $2,876,995 | 0.53% | 28,900 | Shares | 2026-08-13 | |
| Mid BBR PARTNERS, LLC Registered adviser | $2,508,162 | 0.46% | 25,195 | Shares | 2026-08-11 | |
| Large Man Group plc | $2,396,168 | 0.44% | 24,070 | Shares | 2026-08-14 | |
| Large Point72 Asset Management, L.P. Registered adviser | $2,241,268 | 0.41% | 22,514 | Shares | 2026-08-14 | |
| Mega FRANKLIN RESOURCES INC Adviser | $2,180,641 | 0.40% | 21,905 | Shares | 2026-08-13 | |
| Mega AMERICAN CENTURY COMPANIES INC | $2,027,236 | 0.38% | 20,364 | Shares | 2026-08-12 | |
| Mid RICE HALL JAMES & ASSOCIATES, LLC Registered adviser | $1,888,264 | 0.35% | 18,968 | Shares | 2026-08-07 | |
| Large STATE OF WISCONSIN INVESTMENT BOARD Benefit plan | $1,882,092 | 0.35% | 18,906 | Shares | 2026-08-14 | |
| Mid SEGALL BRYANT & HAMILL, LLC Registered adviser | $1,802,651 | 0.33% | 18,108 | Shares | 2026-08-12 | |
| Mid Numerai GP LLC Registered adviser | $1,768,903 | 0.33% | 17,769 | Shares | 2026-08-14 | |
| Mid XTX Topco Ltd | $1,739,636 | 0.32% | 17,475 | Shares | 2026-08-14 | |
| Large KING LUTHER CAPITAL MANAGEMENT CORP Registered adviser | $1,733,265 | 0.32% | 17,411 | Shares | 2026-08-10 | |
| Mega Creative Planning Registered adviser | $1,654,022 | 0.31% | 16,615 | Shares | 2026-08-13 | |
| Mega ROYAL BANK OF CANADA Bank | $1,473,638 | 0.27% | 14,803 | Shares | 2026-08-14 | |
| Mid Engineers Gate Manager LP | $1,466,471 | 0.27% | 14,731 | Shares | 2026-08-14 | |
| Large Mariner, LLC Registered adviser | $1,434,216 | 0.27% | 14,407 | Shares | 2026-08-13 | |
| Mega WELLS FARGO & COMPANY/MN Bank | $1,432,125 | 0.27% | 14,386 | Shares | 2026-08-14 | |
| Mid NFJ INVESTMENT GROUP, LLC Registered adviser | $1,419,183 | 0.26% | 14,256 | Shares | 2026-08-11 | |
| Mega Nuveen, LLC | $1,383,346 | 0.26% | 13,896 | Shares | 2026-08-11 | |
| Large IEQ CAPITAL, LLC Registered adviser | $1,351,889 | 0.25% | 13,580 | Shares | 2026-08-11 | |
| Mega PRINCIPAL FINANCIAL GROUP INC Insurer | $1,201,468 | 0.22% | 12,069 | Shares | 2026-08-04 | |
| Mega Invesco Ltd. Adviser | $1,180,860 | 0.22% | 11,862 | Shares | 2026-08-14 | |
| Small GLOBEFLEX CAPITAL L P Registered adviser | $1,152,888 | 0.21% | 11,581 | Shares | 2026-08-12 | |
| Mega STIFEL FINANCIAL CORP | $1,115,158 | 0.21% | 11,202 | Shares | 2026-08-12 | |
| Mega ENVESTNET ASSET MANAGEMENT INC Registered adviser | $877,632 | 0.16% | 8,816 | Shares | 2026-09-23 | |
| Mega MARSHALL WACE, LLP Exempt adviser | $870,066 | 0.16% | 8,740 | Shares | 2026-08-13 | |
| Mid Empirical Financial Services, LLC d.b.a. Empirical Wealth Management Registered adviser | $838,762 | 0.16% | 6,455 | Shares | 2026-10-27 | |
| Small CM WEALTH ADVISORS LLC Registered adviser | $830,346 | 0.15% | 8,341 | Shares | 2026-08-10 | |
| Large GAMCO INVESTORS, INC. ET AL Registered adviser | $830,247 | 0.15% | 8,340 | Shares | 2026-08-12 | |
| Mega UBS Group AG Bank | $773,801 | 0.14% | 7,773 | Shares | 2026-08-13 | |
| Mid CenterBook Partners LP Registered adviser | $770,417 | 0.14% | 7,739 | Shares | 2026-08-11 | |
| Large Quadrature Capital Ltd | $764,743 | 0.14% | 7,682 | Shares | 2026-08-07 | |
| Large Vident Advisory, LLC Registered adviser | $757,376 | 0.14% | 7,608 | Shares | 2026-08-12 | |
| Large Cerity Partners LLC Registered adviser | $737,963 | 0.14% | 7,413 | Shares | 2026-08-14 | |
| Large LOS ANGELES CAPITAL MANAGEMENT LLC Registered adviser | $735,475 | 0.14% | 7,388 | Shares | 2026-08-13 | |
| Large Quantinno Capital Management LP Registered adviser | $703,519 | 0.13% | 7,067 | Shares | 2026-08-13 | |
| Mega SEI INVESTMENTS CO Holding company | $672,857 | 0.12% | 6,759 | Shares | 2026-08-14 | |
| Large MERCER GLOBAL ADVISORS INC /ADV Registered adviser | $672,559 | 0.12% | 6,756 | Shares | 2026-08-19 | |
| Mega RHUMBLINE ADVISERS Registered adviser | $653,048 | 0.12% | 6,560 | Shares | 2026-08-12 | |
| Mega ALLIANCEBERNSTEIN L.P. Registered adviser | $647,075 | 0.12% | 6,500 | Shares | 2026-08-14 | |
| Mega CANADA PENSION PLAN INVESTMENT BOARD Non-US | $627,165 | 0.12% | 6,300 | Shares | 2026-08-14 | |
| Mega LPL Financial LLC Broker-dealer | $601,680 | 0.11% | 6,044 | Shares | 2026-08-07 | |
| Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $558,176 | 0.10% | 5,607 | Shares | 2026-08-14 | |
| Large STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM Benefit plan | $542,049 | 0.10% | 5,445 | Shares | 2026-08-10 | |
| Mega DEUTSCHE BANK AG\ Non-US | $535,578 | 0.10% | 5,380 | Shares | 2026-08-07 | |
| Large WEALTH ENHANCEMENT ADVISORY SERVICES, LLC | $470,902 | 0.09% | 3,624 | Shares | 2026-10-13 | |
| Large Brevan Howard Capital Management LP Exempt adviser | $446,879 | 0.08% | 4,489 | Shares | 2026-08-14 | |
| Mega PRICE T ROWE ASSOCIATES INC /MD/ Registered adviser | $437,323 | 0.08% | 4,393 | Shares | 2026-08-14 | |
| Large Magnetar Financial LLC Registered adviser | $412,037 | 0.08% | 4,139 | Shares | 2026-08-14 | |
| Mega JPMORGAN CHASE & CO Bank | $393,120 | 0.07% | 3,949 | Shares | 2026-08-12 | |
| Large STRS OHIO Benefit plan | $368,335 | 0.07% | 3,700 | Shares | 2026-07-30 | |
| Small Burns Matteson Capital Management, LLC Registered adviser | $352,787 | 0.07% | 2,715 | Shares | 2026-10-16 | |
| Mid SEIZERT CAPITAL PARTNERS, LLC Registered adviser | $343,049 | 0.06% | 3,446 | Shares | 2026-08-05 | |
| Large CAPTRUST FINANCIAL ADVISORS Registered adviser | $325,827 | 0.06% | 3,273 | Shares | 2026-08-13 | |
| Small Kings Path Partners LLC | $316,144 | 0.06% | 2,433 | Shares | 2026-10-21 | |
| Mid PRELUDE CAPITAL MANAGEMENT, LLC Registered adviser | $312,686 | 0.06% | 3,141 | Shares | 2026-08-14 | |
| Large MetLife Investment Management, LLC Registered adviser | $308,007 | 0.06% | 3,094 | Shares | 2026-08-14 | |
| Small Dynamic Technology Lab Private Ltd | $290,785 | 0.05% | 2,921 | Shares | 2026-08-13 | |
| Mid Graham Capital Management, L.P. Registered adviser | $284,613 | 0.05% | 2,859 | Shares | 2026-08-14 | |
| Mid Sterling Capital Management LLC Registered adviser | $271,184 | 0.05% | 2,087 | Shares | 2026-10-22 | |
| Small Integrated Quantitative Investments LLC Registered adviser | $257,834 | 0.05% | 2,590 | Shares | 2026-08-14 | |
| Mega CITIGROUP INC Bank | $249,869 | 0.05% | 2,510 | Shares | 2026-08-03 | |
| Large Corient Private Wealth LLC Registered adviser | $241,209 | 0.04% | 2,423 | Shares | 2026-08-27 | |
| Small Topline Capital Management, LLC Adviser | $236,331 | 0.04% | 2,374 | Shares | 2026-08-14 |
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