Anterix ATEX Institutional Ownership

NASDAQ ATEX

$78.40 -3.78 (-4.60%)

As of: Sep 14, 2026 · 1:57 PM EDT

Institutions by Trading Activity

173 Institutions

Increased 103 59.5%

Unchanged 21 12.1%

Reduced 49 28.3%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

102.13%

▲+11.52 pp QoQ

Shares Held by Institutions

19.49Mn

of 19.09Mn outstanding

▲+20.53% QoQ

Shares Outstanding

19.09Mn

-406.07K held outside 13F filers

Institutional Investors

173

filed 13F for Jun 2026

▲+42 vs prior quarter

Net Shares Added (QoQ)

+3.32Mn

accumulated since last quarter

Value of Holdings

$1.60Bn

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

Anterix Inc. (NASDAQ:ATEX) has 173 institutional investors with active 13F positions as of June 2026.

These investors held 102.1% of outstanding shares in June 2026, up from 90.6% in March 2026.
They increased total shares held in ATEX by 20.53% quarter over quarter, and investors in Anterix increased 57.27% from a year ago.
During the quarter, 103 of these 173 funds increased positions in ATEX, 49 reduced exposure, and 21 held steady.
The aggregate institutional position in Anterix amounted to 19.49Mn shares as of June 2026, up by 3.32Mn shares quarter on quarter, and up 3.05Mn shares year over year.
Owl Creek Asset Management, L.P. is the top holder of Anterix as of June 30, 2026, with 5.41Mn shares representing 28.36% of outstanding stock.
The largest buyers of Anterix for the quarter ending June 2026 were T. Rowe Price Investment Management, Inc. (2.35Mn), PRICE T ROWE ASSOCIATES INC /MD/ (742.5K), Jupiter Topco LLC (662.42K), Curated Wealth Partners LLC (250.0K), FMR LLC (235.1K).
Top sellers of ATEX stock for the quarter ending June 2026 included JANE STREET GROUP, LLC (403.35K), MILLENNIUM MANAGEMENT LLC (277.58K), GARNET EQUITY CAPITAL HOLDINGS, INC. (187.38K), Potrero Capital Research LLC (183.04K), CITADEL ADVISORS LLC (152.15K).
According to Business Quant data, leading holders of ATEX for June 2026 are Owl Creek Asset Management, L.P. (5.41Mn), T. Rowe Price Investment Management, Inc. (2.35Mn), Heard Capital LLC (1.72Mn), BlackRock, Inc. (1.08Mn), PRICE T ROWE ASSOCIATES INC /MD/ (750.45K), Jupiter Topco LLC (662.42K), VANGUARD CAPITAL MANAGEMENT LLC (553.0K), PLUSTICK MANAGEMENT LLC (520.0K), State Street Corp (495.95K), GAMCO INVESTORS, INC. ET AL (415.52K).

Form 13F Holdings

173 Institutional Holders

Report period 30 Jun, 2026

Total shares held 19.49Mn

Of outstanding 102.13%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	Owl Creek Asset Management, L.P.	0001313756	5,411,776	28.36%	0	0.00%	$557.09Mn
2	T. Rowe Price Investment Management, Inc.	0001897612	2,348,019	12.30%	▲2,348,019	0.00%	$241.71K
3	Heard Capital LLC	0001796409	1,716,738	8.99%	0	0.00%	$176.72Mn
4	BlackRock, Inc.	0002012383	1,075,115	5.63%	▲67,972	+6.75%	$110.67Mn
5	PRICE T ROWE ASSOCIATES INC /MD/	0000080255	750,451	3.93%	▲742,496	+9,333.70%	$77.25K
6	Jupiter Topco LLC	0002146052	662,415	3.47%	▲662,415	0.00%	$68.19Mn
7	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	553,002	2.90%	▼20,845	-3.63%	$56.93Mn
8	PLUSTICK MANAGEMENT LLC	0001643351	520,000	2.72%	▲20,404	+4.08%	$53.53Mn
9	State Street Corp	0000093751	495,950	2.60%	▲108,032	+27.85%	$51.05Mn
10	GAMCO INVESTORS, INC. ET AL	0000807249	415,520	2.18%	▼10,300	-2.42%	$42.77Mn
11	GEODE CAPITAL MANAGEMENT, LLC	0001214717	388,076	2.03%	▲13,775	+3.68%	$39.96Mn
12	QVT Financial LP	0001290162	383,941	2.01%	▼120,000	-23.81%	$39.52Mn
13	DIMENSIONAL FUND ADVISORS LP	0000354204	370,964	1.94%	▼53,892	-12.68%	$38.18Mn
14	FMR LLC	0000315066	370,400	1.94%	▲235,105	+173.77%	$38.13Mn
15	GABELLI FUNDS LLC	0001081407	278,500	1.46%	▲12,700	+4.78%	$28.67Mn
16	Curated Wealth Partners LLC	0001781284	250,000	1.31%	▲250,000	0.00%	$249.80K
17	Invesco Ltd.	0000914208	200,975	1.05%	▲200,975	0.00%	$20.69Mn
18	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	158,469	0.83%	▼6,073	-3.69%	$16.31Mn
19	GARNET EQUITY CAPITAL HOLDINGS, INC.	0001423876	156,119	0.82%	▼187,377	-54.55%	$16.07Mn
20	Potomac Capital Management, Inc.	0001418746	155,071	0.81%	▼18,731	-10.78%	$15.96Mn

Showing 1 to 20 of 173 holders