Anterix ATEX Institutional Ownership

NASDAQ ATEX

$80.48 -4.00 (-4.73%)

At close: Oct 16, 2026 · 4:00 PM EDT

Institutions by Trading Activity

171 Institutions

Increased 101 59.1%

Unchanged 21 12.3%

Reduced 49 28.7%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

97.71%

▲+8.18 pp QoQ

Shares Held by Institutions

19.10Mn

of 19.55Mn outstanding

▲+12.81% QoQ

Shares Outstanding

19.55Mn

447.85K held outside 13F filers

Institutional Investors

171

filed 13F for Jun 2026

▲+40 vs prior quarter

Net Shares Added (QoQ)

+2.17Mn

accumulated since last quarter

Value of Holdings

$1.61Bn

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

Updated Oct 11, 2026

Anterix Inc. (NASDAQ:ATEX) had 171 institutional holders reporting a position on Form 13F for the quarter ended June 30, 2026.

Collectively, these holders controlled 97.71% of Anterix's outstanding shares in Q2 2026, up from 89.53% in Q1 2026.
Total shares held in ATEX rose 12.81% from Q1 2026; the number of holders rose 58.33% from Q2 2025.
Of the 171 holders of ATEX in Q2 2026, 101 added to their positions, 49 reduced their stakes and 21 left their positions unchanged.
Institutional investors held 19.1Mn shares of Anterix in total at the end of Q2 2026, up 2.17Mn from the prior quarter and up 2.75Mn from a year earlier.
As of June 30, 2026, Owl Creek Asset Management, L.P. held the largest stake in Anterix with 5.41Mn shares, or 27.68% of shares outstanding.
Holders that added the most shares of Anterix in Q2 2026 were T. Rowe Price Associates Inc (+742.5K shares), FMR LLC (+235.1K shares), State Street Corp (+108.03K shares), D. E. Shaw & Co., Inc. (+87.29K shares) and BlackRock, Inc. (+67.97K shares).
The largest position reductions in ATEX for Q2 2026 were by Jane Street Group, LLC (-403.35K shares), Millennium Management LLC (-277.58K shares), Garnet Equity Capital Holdings, Inc. (-187.38K shares), Potrero Capital Research LLC (-183.04K shares) and Citadel Advisors LLC (-152.15K shares).
According to Business Quant data, the leading holders of ATEX for Q2 2026 were Owl Creek Asset Management, L.P. (5.41Mn shares), T. Rowe Price Investment Management, Inc. (2.35Mn shares), Heard Capital LLC (1.72Mn shares), BlackRock, Inc. (1.08Mn shares), T. Rowe Price Associates Inc (750.45K shares), Jupiter Topco LLC (662.41K shares), Vanguard Capital Management LLC (553K shares), Plustick Management LLC (520K shares), State Street Corp (495.95K shares) and Gamco Investors, Inc. (415.52K shares).

Form 13F Holdings

171 Institutional Holders

Report period 30 Jun, 2026

Total shares held 19.10Mn

Of outstanding 97.71%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	Owl Creek Asset Management, L.P.	0001313756	5,411,776	27.68%	0	0.00%	$557.09Mn
2	T. Rowe Price Investment Management, Inc.	0001897612	2,348,019	12.01%	▲2,348,019	0.00%	$241.71K
3	Heard Capital LLC	0001796409	1,716,738	8.78%	0	0.00%	$176.72Mn
4	BlackRock, Inc.	0002012383	1,075,115	5.50%	▲67,972	+6.75%	$110.67Mn
5	PRICE T ROWE ASSOCIATES INC /MD/	0000080255	750,451	3.84%	▲742,496	+9,333.70%	$77.25K
6	Jupiter Topco LLC	0002146052	662,415	3.39%	▲662,415	0.00%	$68.19Mn
7	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	553,002	2.83%	▼20,845	-3.63%	$56.93Mn
8	PLUSTICK MANAGEMENT LLC	0001643351	520,000	2.66%	▲20,404	+4.08%	$53.53Mn
9	State Street Corp	0000093751	495,950	2.54%	▲108,032	+27.85%	$51.05Mn
10	GAMCO INVESTORS, INC. ET AL	0000807249	415,520	2.13%	▼10,300	-2.42%	$42.77Mn
11	GEODE CAPITAL MANAGEMENT, LLC	0001214717	388,076	1.99%	▲13,775	+3.68%	$39.96Mn
12	QVT Financial LP	0001290162	383,941	1.96%	▼120,000	-23.81%	$39.52Mn
13	DIMENSIONAL FUND ADVISORS LP	0000354204	370,964	1.90%	▼53,892	-12.68%	$38.18Mn
14	FMR LLC	0000315066	370,400	1.89%	▲235,105	+173.77%	$38.13Mn
15	GABELLI FUNDS LLC	0001081407	278,500	1.42%	▲12,700	+4.78%	$28.67Mn
16	Invesco Ltd.	0000914208	200,975	1.03%	▲200,975	0.00%	$20.69Mn
17	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	158,469	0.81%	▼6,073	-3.69%	$16.31Mn
18	GARNET EQUITY CAPITAL HOLDINGS, INC.	0001423876	156,119	0.80%	▼187,377	-54.55%	$16.07Mn
19	Potomac Capital Management, Inc.	0001418746	155,071	0.79%	▼18,731	-10.78%	$15.96Mn
20	Panoramic Capital, LLC	0001950490	154,377	0.79%	▲19,377	+14.35%	$15.89Mn

Showing 1 to 20 of 171 holders