ATN International ATNI Institutional Ownership

NASDAQ ATNI

$28.04 +0.22 (+0.79%)

At close: Oct 1, 2026 · 4:00 PM EDT

Institutions by Trading Activity

135 Institutions

Increased 75 55.6%

Unchanged 19 14.1%

Reduced 41 30.4%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

62.39%

▲+2.54 pp QoQ

Shares Held by Institutions

9.60Mn

of 15.38Mn outstanding

▲+5.86% QoQ

Shares Outstanding

15.38Mn

5.79Mn held outside 13F filers

Institutional Investors

135

filed 13F for Jun 2026

▲+12 vs prior quarter

Net Shares Added (QoQ)

+531.40K

accumulated since last quarter

Value of Holdings

$267.00Mn

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

ATN International, Inc. (NASDAQ:ATNI) has 135 institutional investors that have filed 13F reports for the period ending June 2026.

Collectively, these holders controlled 62.4% of ATN International's outstanding shares in June 2026, up from 59.8% in March 2026.
They increased total shares held in ATN International by 5.86% from the prior quarter, while the number of investors in ATNI increased 36.36% year over year.
Activity in ATNI broke down as 75 buyers, 41 sellers, and 19 unchanged among 135 total holders.
In total, institutional investors held 9.6Mn shares in ATN International as of June 2026, up by 531.4K shares quarter on quarter, and up 653.22K shares year over year.
Global Alpha Capital Management Ltd. leads ownership in ATNI with 1.44Mn shares as of June 30, 2026, equal to 9.39% of outstanding shares.
The biggest buyers of ATN International for the quarter ending June 2026 included AMERICAN CENTURY COMPANIES INC (98.7K), Sixth Street Partners Management Company, L.P. (82.3K), CITADEL ADVISORS LLC (59.87K), O'SHAUGHNESSY ASSET MANAGEMENT, LLC (54.17K), AQR CAPITAL MANAGEMENT LLC (33.14K).
The largest sales of ATNI for the quarter ending June 2026 came from Trexquant Investment LP (42.8K), Sei Investments Co (41.02K), ARROWSTREET CAPITAL, LIMITED PARTNERSHIP (37.78K), DIMENSIONAL FUND ADVISORS LP (20.95K), RENAISSANCE TECHNOLOGIES LLC (16.8K).
Per Business Quant, the top 10 investors in ATNI for the quarter ending June 2026 include Global Alpha Capital Management Ltd. (1.44Mn), BlackRock, Inc. (923.26K), DIMENSIONAL FUND ADVISORS LP (727.36K), BROWN BROTHERS HARRIMAN & CO (662.54K), AMERICAN CENTURY COMPANIES INC (573.64K), VANGUARD CAPITAL MANAGEMENT LLC (414.18K), ACADIAN ASSET MANAGEMENT LLC (379.77K), D. E. Shaw & Co., Inc. (375.14K), RENAISSANCE TECHNOLOGIES LLC (320.93K), Morgan Stanley (277.63K).

Form 13F Holdings

135 Institutional Holders

Report period 30 Jun, 2026

Total shares held 9.60Mn

Of outstanding 62.39%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	Global Alpha Capital Management Ltd.	0001584691	1,444,296	9.39%	▼12,702	-0.87%	$38.26Mn
2	BlackRock, Inc.	0002012383	923,255	6.00%	▲21,066	+2.33%	$24.46Mn
3	DIMENSIONAL FUND ADVISORS LP	0000354204	727,365	4.73%	▼20,947	-2.80%	$19.27Mn
4	BROWN BROTHERS HARRIMAN & CO	0000014661	662,544	4.31%	0	0.00%	$17.55Mn
5	AMERICAN CENTURY COMPANIES INC	0000748054	573,643	3.73%	▲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	2.09%	▼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	0.89%	▼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	0.82%	▲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	0.68%	▲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 135 holders