Mesa Laboratories MLAB Institutional Ownership

NASDAQ MLAB

$129.91 -1.07 (-0.82%)

As of: Sep 30, 2026 · 3:59 PM EDT

Institutions by Trading Activity

158 Institutions

Increased 92 58.2%

Unchanged 27 17.1%

Reduced 39 24.7%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

89.43%

▲+2.33 pp QoQ

Shares Held by Institutions

5.06Mn

of 5.66Mn outstanding

▲+16.84% QoQ

Shares Outstanding

5.66Mn

597.93K held outside 13F filers

Institutional Investors

158

filed 13F for Jun 2026

▼-2 vs prior quarter

Net Shares Added (QoQ)

+729.16K

accumulated since last quarter

Value of Holdings

$662.64Mn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Mesa Laboratories Inc /Co/ (NASDAQ:MLAB) showed up in the 13F filings of 158 institutional investors as of June 2026.

They owned 89.4% of outstanding stock in June 2026, up from 87.1% the prior quarter.
They increased total shares held in Mesa Laboratories by 16.84% from the prior quarter, while the number of investors in MLAB increased 2.6% year over year.
Among the 158 funds, 92 bought more Mesa Laboratories shares, 39 sold down, and 27 held their ground.
In total, institutional investors held 5.06Mn shares in Mesa Laboratories as of June 2026, up by 729.16K shares quarter on quarter, and up 135.62K shares year over year.
Long Path Partners LP is the top holder of Mesa Laboratories as of June 30, 2026, with 477.13K shares representing 8.43% of outstanding stock.
The most significant purchases of MLAB for the quarter ending June 2026 came from JACOBS LEVY EQUITY MANAGEMENT, INC (86.42K), FMR LLC (82.39K), JANE STREET GROUP, LLC (71.58K), Long Path Partners LP (71.54K), WASATCH ADVISORS LP (64.44K).
The largest sellers of Mesa Laboratories for the quarter ending June 2026 were ROYCE & ASSOCIATES LP (47.83K), MONIMUS CAPITAL MANAGEMENT, LP (45.95K), Ranger Investment Management, L.P. (28.92K), Russell Investments Group, Ltd. (13.22K), CHARLES SCHWAB INVESTMENT MANAGEMENT INC (7.96K).
Per Business Quant data, the top 10 holders of Mesa Laboratories for the quarter ending June 2026 are Long Path Partners LP (477.13K), BlackRock, Inc. (440.55K), Boston Partners (265.15K), VANGUARD CAPITAL MANAGEMENT LLC (237.46K), AQR CAPITAL MANAGEMENT LLC (203.74K), Ranger Investment Management, L.P. (173.99K), Morgan Stanley (156.98K), Diamond Hill Capital Management, LLC (Investment Advisor) (155.77K), Raymond James Financial Inc (149.94K), DIMENSIONAL FUND ADVISORS LP (148.4K).

Form 13F Holdings

158 Institutional Holders

Report period 30 Jun, 2026

Total shares held 5.06Mn

Of outstanding 89.43%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	Long Path Partners LP	0001905112	477,126	8.43%	▲71,543	+17.64%	$47.50Mn
2	BlackRock, Inc.	0002012383	440,552	7.79%	▲46,701	+11.86%	$43.86Mn
3	Boston Partners	0001386060	265,149	4.69%	▼3,562	-1.33%	$26.39Mn
4	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	237,457	4.20%	▲4,814	+2.07%	$23.64Mn
5	AQR CAPITAL MANAGEMENT LLC	0001167557	203,736	3.60%	▲33,174	+19.45%	$20.28Mn
6	Ranger Investment Management, L.P.	0001319691	173,988	3.08%	▼28,915	-14.25%	$17.32Mn
7	Morgan Stanley	0000895421	156,979	2.77%	▼5,137	-3.17%	$15.63Mn
8	Diamond Hill Capital Management, LLC (Investment Advisor)	0001217541	155,771	2.75%	▲469	+0.30%	$15.51Mn
9	Raymond James Financial Inc	0000720005	149,937	2.65%	▲27,026	+21.99%	$14.93Mn
10	DIMENSIONAL FUND ADVISORS LP	0000354204	148,395	2.62%	▲23,765	+19.07%	$14.77Mn
11	GEODE CAPITAL MANAGEMENT, LLC	0001214717	139,682	2.47%	▲11,680	+9.12%	$13.91Mn
12	KENNEDY CAPITAL MANAGEMENT LLC	0000884589	138,301	2.44%	▼4,042	-2.84%	$13.77Mn
13	JACOBS LEVY EQUITY MANAGEMENT, INC	0000884414	130,838	2.31%	▲86,421	+194.57%	$13.02Mn
14	State Street Corp	0000093751	124,292	2.20%	▲2,224	+1.82%	$12.37Mn
15	Russell Investments Group, Ltd.	0001692234	121,845	2.15%	▼13,224	-9.79%	$12.13Mn
16	WASATCH ADVISORS LP	0000814133	115,668	2.04%	▲64,435	+125.77%	$11.51Mn
17	ROYCE & ASSOCIATES LP	0000906304	113,395	2.00%	▼47,834	-29.67%	$11.29Mn
18	CRAWFORD INVESTMENT COUNSEL INC	0000837592	98,805	1.75%	▲3,270	+3.42%	$9.84Mn
19	FMR LLC	0000315066	88,857	1.57%	▲82,387	+1,273.37%	$8.85Mn
20	D. E. Shaw & Co., Inc.	0001009207	81,755	1.45%	▲27,197	+49.85%	$8.14Mn

Showing 1 to 20 of 158 holders