Mesa Laboratories Inc /Co/ (MLAB) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

0Shares Outstanding

82,257Shares held by institutions

$7,006,651Value of institutional holdings

89.84%Institutional ownership %

1.86%Shares Changed QoQ

154No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Mesa Laboratories Inc /Co/ (NASDAQ:MLAB) is held by 155 institutional investors per 13F filings through December 2025.

These investors held 84.5% of outstanding shares in December 2025, down from 90.7% in September 2025.
Their total shares held in MLAB increased 13.47% from the prior quarter, while the number of investors in Mesa Laboratories decreased 3.12% year over year.
Of these 155 holders, 88 added to their stakes in Mesa Laboratories, 45 trimmed positions, and 22 made no changes.
In total, institutional investors held 4.7Mn shares in Mesa Laboratories as of December 2025, up by 557.76K shares quarter on quarter, and down 1.22Mn shares year over year.
BlackRock, Inc. holds the largest position in MLAB at 398.67K shares as of December 31, 2025, or 7.16% of shares outstanding.
The biggest buyers of Mesa Laboratories for the quarter ending December 2025 included Long Path Partners LP (227.22K), Boston Partners (99.02K), Select Equity Group, L.P. (79.72K), Raymond James Financial Inc (53.0K), D. E. Shaw & Co., Inc. (43.75K).
The biggest sellers of Mesa Laboratories for the quarter ending December 2025 included MILLENNIUM MANAGEMENT LLC (129.35K), Morgan Stanley (79.39K), COMERICA BANK (42.31K), Bank Of America Corp /De/ (39.53K), Janus Henderson Group Plc (29.01K).
Business Quant data shows the 10 biggest positions in Mesa Laboratories as of December 2025 are held by BlackRock, Inc. (398.67K), VANGUARD GROUP INC (321.9K), Long Path Partners LP (227.22K), Boston Partners (213.38K), Select Equity Group, L.P. (206.44K), Ranger Investment Management, L.P. (205.26K), GENEVA CAPITAL MANAGEMENT LLC (178.71K), Morgan Stanley (175.59K), ROYCE & ASSOCIATES LP (153.35K), KENNEDY CAPITAL MANAGEMENT LLC (144.61K).

155 Institutional Holders

82,257 Total Shares Held

Rows:

Download Data

Owner Name	Date	Change (QoQ)	Change (%)	Value (USD)
BlackRock, Inc.	31 Dec, 2025	9,871	2.54%	$0.00
VANGUARD GROUP INC	31 Dec, 2025	182	0.06%	$0.00
Long Path Partners LP	31 Dec, 2025	227,223	0.00%	$0.00
Barclays Plc	31 Dec, 2025	-8,314	-50.39%	$0.00
Boston Partners	31 Dec, 2025	99,019	86.59%	$0.00
Russell Investments Group, Ltd.	31 Dec, 2025	17,150	17.29%	$0.00
Rockefeller Capital Management L.P.	31 Dec, 2025	90	60.81%	$0.00
Select Equity Group, L.P.	31 Dec, 2025	79,720	62.91%	$0.00
Meros Investment Management, LP	31 Dec, 2025	8,540	11.17%	$0.00
Ranger Investment Management, L.P.	31 Dec, 2025	-4,437	-2.12%	$0.00
Roubaix Capital, LLC	31 Dec, 2025	-21,468	-28.01%	$0.00
GENEVA CAPITAL MANAGEMENT LLC	31 Dec, 2025	-12,673	-6.62%	$0.00
Trexquant Investment LP	31 Dec, 2025	21,031	83.82%	$0.00
Morgan Stanley	31 Dec, 2025	-79,385	-31.13%	$0.00
MONIMUS CAPITAL MANAGEMENT, LP	31 Dec, 2025	7,098	21.03%	$0.00
ROYCE & ASSOCIATES LP	31 Dec, 2025	4,794	3.23%	$0.00
Qube Research & Technologies Ltd	31 Dec, 2025	-2,595	-8.45%	$0.00
KENNEDY CAPITAL MANAGEMENT LLC	31 Dec, 2025	23,060	18.97%	$0.00
Irenic Capital Management LP	31 Dec, 2025	25,000	0.00%	$0.00
DIAMOND HILL CAPITAL MANAGEMENT INC	31 Dec, 2025	18,592	15.07%	$0.00

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