MLAB Mesa Laboratories, Inc.

NASDAQ
$127.14

Mesa Laboratories, Inc. (MLAB) Institutional Ownership

What the institutions did with MLAB last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.

Managers compared
175
filed both this quarter and last
Managers holding
157
+0 on the quarter
Buyers
91
18 opened new
Sellers
56
18 sold out entirely
Buyer share
61.9%
of managers who traded it
Breadth
+23.8
net buyers, as a share of those trading

Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.

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Ownership map

Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.

Cut Unchanged Added Color saturates at ±50%.

Largest holders

Manager Shares % of reported
Long Path Partners LP 477.1K 9.5%
BlackRock, Inc. 440.6K 8.8%
Boston Partners 265.1K 5.3%
VANGUARD CAPITAL MANAGEMENT LLC 237.5K 4.7%
AQR CAPITAL MANAGEMENT LLC 203.7K 4.0%
Ranger Investment Management, L.P. 174.0K 3.5%
MORGAN STANLEY 157.0K 3.1%
DIAMOND HILL CAPITAL MANAGEMENT INC 155.8K 3.1%
RAYMOND JAMES FINANCIAL INC 149.9K 3.0%
DIMENSIONAL FUND ADVISORS LP 148.4K 2.9%
GEODE CAPITAL MANAGEMENT, LLC 139.7K 2.8%
KENNEDY CAPITAL MANAGEMENT LLC 138.3K 2.7%
JACOBS LEVY EQUITY MANAGEMENT, INC 130.8K 2.6%
STATE STREET CORP 124.3K 2.5%
Russell Investments Group, Ltd. 121.8K 2.4%
WASATCH ADVISORS LP 115.7K 2.3%
ROYCE & ASSOCIATES LP 113.4K 2.3%
CRAWFORD INVESTMENT COUNSEL INC 98.8K 2.0%
FMR LLC 88.9K 1.8%
D. E. Shaw & Co., Inc. 81.8K 1.6%
JANE STREET GROUP, LLC 71.6K 1.4%
VANGUARD PORTFOLIO MANAGEMENT LLC 69.4K 1.4%
Meros Investment Management, LP 68.0K 1.4%
NORTHERN TRUST CORP 65.7K 1.3%
GOLDMAN SACHS GROUP INC 64.3K 1.3%

Largest changes

Manager Action Previous Current Change
Select Equity Group, L.P. Sold Out 235.9K 0 -235.9K
JACOBS LEVY EQUITY MANAGEMENT, INC Increased 44.4K 130.8K +86.4K
FMR LLC Increased 6.5K 88.9K +82.4K
Roubaix Capital, LLC Sold Out 72.1K 0 -72.1K
JANE STREET GROUP, LLC New 0 71.6K +71.6K
Long Path Partners LP Increased 405.6K 477.1K +71.5K
WASATCH ADVISORS LP Increased 51.2K 115.7K +64.4K
ROYCE & ASSOCIATES LP Reduced 161.2K 113.4K -47.8K
BlackRock, Inc. Increased 393.9K 440.6K +46.7K
MONIMUS CAPITAL MANAGEMENT, LP Reduced 101.3K 55.3K -45.9K
Qube Research & Technologies Ltd New 0 37.4K +37.4K
AQR CAPITAL MANAGEMENT LLC Increased 170.6K 203.7K +33.2K
Ranger Investment Management, L.P. Reduced 202.9K 174.0K -28.9K
CITADEL ADVISORS LLC Increased 8.4K 35.9K +27.5K
D. E. Shaw & Co., Inc. Increased 54.6K 81.8K +27.2K
RAYMOND JAMES FINANCIAL INC Increased 122.9K 149.9K +27.0K
DIMENSIONAL FUND ADVISORS LP Increased 124.6K 148.4K +23.8K
Man Group plc Increased 2.5K 24.1K +21.6K
LAZARD ASSET MANAGEMENT LLC Sold Out 20.3K 0 -20.3K
Trexquant Investment LP Sold Out 18.7K 0 -18.7K
VANGUARD PORTFOLIO MANAGEMENT LLC Increased 52.6K 69.4K +16.8K
NFJ INVESTMENT GROUP, LLC New 0 14.3K +14.3K
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO Sold Out 13.7K 0 -13.7K
Russell Investments Group, Ltd. Reduced 135.1K 121.8K -13.2K
TWO SIGMA INVESTMENTS, LP Increased 16.4K 29.2K +12.9K
WELLS FARGO & COMPANY/MN Increased 1.9K 14.4K +12.5K
GEODE CAPITAL MANAGEMENT, LLC Increased 128.0K 139.7K +11.7K
XTX Topco Ltd Increased 6.2K 17.5K +11.3K
Engineers Gate Manager LP Increased 3.8K 14.7K +11.0K
Connor, Clark & Lunn Investment Management Ltd. Sold Out 9.5K 0 -9.5K
MARSHALL WACE, LLP New 0 8.7K +8.7K
CM WEALTH ADVISORS LLC New 0 8.3K +8.3K
CHARLES SCHWAB INVESTMENT MANAGEMENT INC Reduced 62.4K 54.5K -8.0K
BANK OF AMERICA CORP /DE/ Reduced 57.9K 50.0K -7.9K
HERALD INVESTMENT MANAGEMENT Ltd Reduced 50.0K 42.5K -7.5K
LOS ANGELES CAPITAL MANAGEMENT LLC Increased 34 7.4K +7.4K
AMERICAN CENTURY COMPANIES INC Increased 13.4K 20.4K +7.0K
TUDOR INVESTMENT CORP ET AL Sold Out 6.9K 0 -6.9K
Numerai GP LLC Increased 11.0K 17.8K +6.8K
CenterBook Partners LP Reduced 14.2K 7.7K -6.5K
GOLDMAN SACHS GROUP INC Reduced 70.6K 64.3K -6.3K
Point72 Asset Management, L.P. Increased 16.3K 22.5K +6.2K
Mariner, LLC Increased 9.0K 14.4K +5.4K
MORGAN STANLEY Reduced 162.1K 157.0K -5.1K
VANGUARD CAPITAL MANAGEMENT LLC Increased 232.6K 237.5K +4.8K
RICE HALL JAMES & ASSOCIATES, LLC Increased 14.2K 19.0K +4.7K
Brevan Howard Capital Management LP New 0 4.5K +4.5K
UBS Group AG Reduced 12.0K 7.8K -4.3K
Magnetar Financial LLC New 0 4.1K +4.1K
INCEPTIONR LLC Sold Out 4.1K 0 -4.1K
KENNEDY CAPITAL MANAGEMENT LLC Reduced 142.3K 138.3K -4.0K
IEQ CAPITAL, LLC Increased 9.7K 13.6K +3.9K
ACADIAN ASSET MANAGEMENT LLC Sold Out 3.9K 0 -3.9K
Nuveen, LLC Increased 10.1K 13.9K +3.8K
STRS OHIO New 0 3.7K +3.7K
Y-Intercept (Hong Kong) Ltd Increased 6.3K 10.0K +3.7K
MERCER GLOBAL ADVISORS INC /ADV Increased 3.1K 6.8K +3.7K
Boston Partners Reduced 268.7K 265.1K -3.6K
NORTHERN TRUST CORP Reduced 69.3K 65.7K -3.5K
EntryPoint Capital, LLC Sold Out 3.5K 0 -3.5K

13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.