ATN International ATNI Institutional Ownership

NASDAQ ATNI

$26.23 +0.87 (+3.43%)

At close: Oct 22, 2026 · 4:00 PM EDT

Institutions by Trading Activity

134 Institutions

Increased 74 55.2%

Unchanged 19 14.2%

Reduced 41 30.6%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

61.77%

▲+2.31 pp QoQ

Shares Held by Institutions

9.52Mn

of 15.40Mn outstanding

▲+4.03% QoQ

Shares Outstanding

15.40Mn

5.89Mn held outside 13F filers

Institutional Investors

134

filed 13F for Jun 2026

▲+11 vs prior quarter

Net Shares Added (QoQ)

+368.59K

accumulated since last quarter

Value of Holdings

$241.30Mn

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 10, 2026

ATN International, Inc. (NASDAQ:ATNI) counted 134 institutional investors among its 13F-reported shareholders for the quarter ended June 30, 2026.

These investors held 61.77% of outstanding shares in Q2 2026, up from 59.47% the quarter before.
Total shares held in ATNI rose 4.03% from Q1 2026; the number of holders rose 38.14% from Q2 2025.
Of the 134 holders of ATNI in Q2 2026, 74 added to their positions, 41 reduced their stakes and 19 left their positions unchanged.
The aggregate institutional position in ATN International was 9.52Mn shares at the end of Q2 2026, up 368.59K from the prior quarter and up 570.91K from a year earlier.
Global Alpha Capital Management Ltd. led 13F holders of ATNI with 1.44Mn shares as of June 30, 2026, or 9.38% of shares outstanding.
Among existing holders, the largest additions to ATN International in Q2 2026 came from American Century Companies Inc (+98.7K shares), Citadel Advisors LLC (+59.87K shares), O'shaughnessy Asset Management, LLC (+54.17K shares), AQR Capital Management LLC (+33.13K shares) and Segall Bryant & Hamill, LLC (+33.02K shares).
Holders that trimmed the most shares of ATN International in Q2 2026 while keeping a position were Trexquant Investment LP (-42.8K shares), SEI Investments Co (-41.02K shares), Arrowstreet Capital, Limited Partnership (-37.78K shares), Dimensional Fund Advisors LP (-20.95K shares) and Renaissance Technologies LLC (-16.8K shares).
According to Business Quant data, the leading holders of ATNI for Q2 2026 were Global Alpha Capital Management Ltd. (1.44Mn shares), BlackRock, Inc. (923.25K shares), Dimensional Fund Advisors LP (727.37K shares), Brown Brothers Harriman & Co (662.54K shares), American Century Companies Inc (573.64K shares), Vanguard Capital Management LLC (414.18K shares), Acadian Asset Management LLC (379.77K shares), D. E. Shaw & Co., Inc. (375.14K shares), Renaissance Technologies LLC (320.93K shares) and Morgan Stanley (277.63K shares).

Form 13F Holdings

134 Institutional Holders

Report period 30 Jun, 2026

Total shares held 9.52Mn

Of outstanding 61.77%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	Global Alpha Capital Management Ltd.	0001584691	1,444,296	9.38%	▼12,702	-0.87%	$38.26Mn
2	BlackRock, Inc.	0002012383	923,255	5.99%	▲21,066	+2.33%	$24.46Mn
3	DIMENSIONAL FUND ADVISORS LP	0000354204	727,365	4.72%	▼20,947	-2.80%	$19.27Mn
4	BROWN BROTHERS HARRIMAN & CO	0000014661	662,544	4.30%	0	0.00%	$17.55Mn
5	AMERICAN CENTURY COMPANIES INC	0000748054	573,643	3.72%	▲98,699	+20.78%	$15.20Mn
6	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	414,177	2.69%	▼8,126	-1.92%	$10.97Mn
7	ACADIAN ASSET MANAGEMENT LLC	0000916542	379,768	2.47%	▲16,564	+4.56%	$10.05K
8	D. E. Shaw & Co., Inc.	0001009207	375,137	2.44%	▲1,566	+0.42%	$9.94Mn
9	RENAISSANCE TECHNOLOGIES LLC	0001037389	320,932	2.08%	▼16,803	-4.98%	$8.50Mn
10	Morgan Stanley	0000895421	277,633	1.80%	▼3,232	-1.15%	$7.35Mn
11	GEODE CAPITAL MANAGEMENT, LLC	0001214717	270,593	1.76%	▲18,577	+7.37%	$7.17Mn
12	State Street Corp	0000093751	221,909	1.44%	▼5,618	-2.47%	$5.94Mn
13	BRIDGEWAY CAPITAL MANAGEMENT, LLC	0001107261	147,750	0.96%	0	0.00%	$3.91Mn
14	Ballast Asset Management, LP	0001998389	136,243	0.88%	▼1,350	-0.98%	$3.61Mn
15	FMR LLC	0000315066	126,805	0.82%	▲19,792	+18.49%	$3.36Mn
16	Bank of New York Mellon Corp	0001390777	125,447	0.81%	▲2,813	+2.29%	$3.32Mn
17	Northern Trust Corp	0000073124	114,153	0.74%	▲30,463	+36.40%	$3.02Mn
18	GABELLI FUNDS LLC	0001081407	109,600	0.71%	▼6,773	-5.82%	$2.90Mn
19	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	103,899	0.67%	▲8,941	+9.42%	$2.75Mn
20	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	0001164508	101,270	0.66%	▼37,776	-27.17%	$2.68Mn

Showing 1 to 20 of 134 holders