Mesa Laboratories MLAB Institutional Ownership

NASDAQ MLAB

$123.25 -0.66 (-0.53%)

As of: Sep 10, 2026 · 1:40 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%

▲+1.07 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

$646.45Mn

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) is held by 158 institutional investors per 13F filings through June 2026.

These investors collectively held 89.4% of Mesa Laboratories's outstanding shares in June 2026, up from 88.4% in March 2026.
Their total shares held in MLAB increased 16.84% quarter over quarter, and separately, investors owning Mesa Laboratories increased 2.6% from a year ago.
Of these 158 holders, 92 added to their stakes in Mesa Laboratories, 39 trimmed positions, and 27 made no changes.
Altogether, these fund groups held 5.06Mn shares in MLAB by June 2026, up by 729.16K shares quarter on quarter, and up 70.33K shares year over year.
Long Path Partners LP holds the largest position in MLAB at 477.13K shares as of June 30, 2026, or 8.43% of shares outstanding.
Leading buyers of Mesa Laboratories shares for the quarter ending June 2026 were 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).
Mesa Laboratories's 10 largest shareholders as of June 2026 include 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) per Business Quant data.

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