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MLAB · Mesa Laboratories Inc · Holdings

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$131.32 +2.07 (+1.60%) Q1 2027 earnings call transcript
Market Cap
$723.27M
Shares
5.60M
Volume · Oct 28 143.45K Avg daily vol (3M) 129.91K

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.

The Sep 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out. Each fund's Change is measured against its own previous reported quarter, shown in the Reported column. Pick a completed quarter in the Quarter selector below to put every fund on one quarter and see the stock-wide activity breakdown.
Holders: 163
Total Value: $540,418,915
Total Shares: 5,304,276
Showing 1–100 of 163 holdings by value · page 1 of 2

Institutional Ownership Trend

27 quarters

Holder Concentration

Across 159 13F filers
Top Holder
9.5%
Sep 2023 → Jun 2026 · range 8.4% – 17.5%
of institutional value
Top 5
32.3%
Sep 2023 → Jun 2026 · range 28.8% – 48.6%
of institutional value
Top 10
47.9%
Sep 2023 → Jun 2026 · range 46.9% – 66.9%
of institutional value
HHI
357
Sep 2023 → Jun 2026 · range 324 – 667
Broadly held

Who 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%

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, 2026

Measured 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.

Conviction holders
1
0.629% of filers hold it in their top 10
Mar 31, 2026: 2
Holders above 5%
1
median weight 0.001%
Mar 31, 2026: 1
Crowding
48.9%
of shares outstanding, 97th percentile
Mar 31, 2026: 47.6%
Private-fund advisers
45.0%
of shares outstanding
Institutional ownership
91.1%
94.3% of the estimated free float
Top 10 holders
47.9%
of 13F shares, Herfindahl 0.036
Active holders
+4.7%
like-for-like share change of active filers
5% stakes on record
4
0 13D, 4 13G (3 institutional, 1 passive, 0 exempt)
How long holders have held it value-weighted 12.2 quarters
Under 1 year 27.2% 1 to 3 years 34.3% 3 years or more 38.5% Since coverage start 0.000%

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 basis

Estimated, 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 avg cost
$89.98
estimated per share
Mar 31, 2026: $87.66
Quarter-end price
$99.55
implied by 13F values
Estimated gain or loss
+10.6%
price against the estimated cost
Estimated at a loss
20.8%
of costed 13F value

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, 2026

Found 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
1 NORGES BANK Non-US, Index-like $102,701,513,002 10 held
2 Capital Research Global Investors Adviser, Diversified active $101,212,630,911 9 held
3 Capital World Investors Adviser, Diversified active $63,661,953,877 7 held
4 UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC Registered adviser, Index-like $60,933,063,260 20 held
5 Amundi Holding company, Index-like $46,731,589,978 16 held
6 Capital International Investors Adviser, Diversified active $42,035,040,809 9 held
7 WELLINGTON MANAGEMENT GROUP LLP Holding company, Diversified active $41,337,269,480 15 held
8 AMERIPRISE FINANCIAL INC Adviser, Diversified active $31,447,531,424 19 held
9 NVIDIA CORP Unknown, Concentrated $29,989,261,126 1 held
10 Fisher Asset Management, LLC Adviser, Diversified active $29,733,558,161 11 held

Fund Ownership of MLAB by Fund Type

Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026

Index 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.

Showing 100 of 163
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Holder Value (USD) % of 13F Shares Open

Showing the top 100 of 163 holders. Create a free account to see every holder, past quarters, search, filters and CSV export.

Key facts CIK 724004 CUSIP 59064R109 13F (30d) 25 filings 25 filers Visit website Investor relations