ATN International

ATNI • NASDAQ

ATN International is a telecommunications services company in the communication services sector on NASDAQ, led by Brad Martin, with a market cap of $333.4M. As of Q3 2025, 60% of shares are held by 105 institutional investors, with Global Alpha Capital Management Ltd. as the largest holder at 10.22%.

Chief Executive OfficerBrad Martin

Market Cap$333.4M

Telecommunications Services

Communication Services

Employees2.3K

Websiteatni.com

Country

United States of America

Overview

Overview of institutional ownership in ATNI as of Q3 2025 with a market cap of $228.4M

All Institutions

Institutions: 105
Value Held: $136.7M
Shares Held: 9.1M
Avg Position: $1.3M
Median Position: $225.2K

Hedge Funds

Hedge Funds: 12
Value Held: $16.2M
Shares Held: 1.1M
Avg Position: $1.4M
Median Position: $1.1M

Ownership Breakdown

Institutional (non-HF)

52.72%

$120.4M

Hedge Funds

7.11%

$16.2M

Retail & Other

40.16%

$91.7M

Based on market cap of $228.4M as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.

Biggest Investors

Institutions with the largest positions in ATNI as of Q3 2025

Institution	Key People	Position Value	Ownership	Owned Since	Total AUM (Long)
Global Alpha Capital Management Ltd. Long Only Manager	Robert Beauregard President	$23.3M 1.33% of portfolio	10.22% 1.6M shares	Q2 2015 Held for 10y 5m	$1.7B
B BlackRock, Inc. Institution	-	$13.5M 0.00% of portfolio	5.89% 899.2K shares	≤ Q2 2013 Held for 12y 5m+	$5.67T
DIMENSIONAL FUND ADVISORS LP Long Only Manager	David Paul Butler CEO	$12.2M 0.00% of portfolio	5.33% 812.9K shares	≤ Q2 2013 Held for 12y 5m+	$466.32B
B BROWN BROTHERS HARRIMAN & CO RIA/Wealth	David Alan Miller Founder	$9.9M 0.06% of portfolio	4.34% 662.5K shares	Q4 2017 Held for 7y 11m	$16.4B
VANGUARD GROUP INC Institution	Salim Ramji CEO	$8.8M 0.00% of portfolio	3.86% 588.8K shares	≤ Q2 2013 Held for 12y 5m+	$6.69T
D D. E. Shaw & Co., Inc. Institution	-	$6.4M 0.01% of portfolio	2.80% 426.8K shares	≤ Q2 2013 Held for 12y 5m+	$115.81B
A AMERICAN CENTURY COMPANIES INC Institution	-	$6.0M 0.00% of portfolio	2.63% 401.2K shares	Q3 2021 Held for 4y 2m	$195.93B
RENAISSANCE TECHNOLOGIES LLC Hedge Fund•Quant	Peter Fitzhugh Brown CEO	$5.2M 0.01% of portfolio	2.27% 346.0K shares	≤ Q2 2013 Held for 12y 5m+	$75.8B
GEODE CAPITAL MANAGEMENT LLC ETF Provider	David Kenneth Lane CEO	$3.8M 0.00% of portfolio	1.67% 255.3K shares	≤ Q2 2013 Held for 12y 5m+	$1.57T
ACADIAN ASSET MANAGEMENT LLC Long Only Manager	Gillian Morna Therese Savage CEO	$3.6M 0.01% of portfolio	1.58% 241.7K shares	Q4 2023 Held for 1y 11m	$51.5B

Net Capital Flow

Institutional buying and selling activity for ATNI in Q3 2025

Traded: −$1.1M
Buyers: 48
Sellers: 47
Total Bought: +$5.1M
Total Sold: −$6.2M
Avg Position: $1.2M

Biggest Buyers

Institution	Net Bought	Current Position
Ballast Asset Management, LP Long Only Manager	+$1.9M +126.7K shares	$1.9M 126.7K shares
B BROWN BROTHERS HARRIMAN & CO RIA/Wealth	+$529.8K +35.4K shares	$9.9M 662.5K shares
Diametric Capital, LP Hedge Fund•Long/Short	+$299.7K +20.0K shares	$299.7K 20.0K shares
JPMORGAN CHASE & CO Institution	+$286.0K +19.1K shares	$358.8K 24.0K shares
Quantinno Capital Management LP Hedge Fund•Market Neutral	+$225.2K +15.0K shares	$225.2K 15.0K shares
A AMERICAN CENTURY COMPANIES INC Institution	+$218.8K +14.6K shares	$6.0M 401.2K shares
GSA CAPITAL PARTNERS LLP Hedge Fund•Quant	+$208.7K +13.9K shares	$491.0K 32.8K shares
H HSBC HOLDINGS PLC Institution	+$198.6K +13.2K shares	$198.6K 13.2K shares
MILLENNIUM MANAGEMENT LLC Hedge Fund•Multi-Strategy	+$192.8K +12.9K shares	$2.3M 153.1K shares
S SCOTIA CAPITAL INC. Institution	+$185.2K +12.4K shares	$185.2K 12.4K shares

Biggest Sellers

Institution	Net Sold	Current Position
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	−$858.4K −57.3K shares	$1.1M 70.3K shares
SummerHaven Investment Management, LLC Long Only Manager	−$626.3K −38.5K shares	Sold Off 0 shares
ARROWSTREET CAPITAL LIMITED PARTNERSHIP Hedge Fund•Quant	−$476.3K −31.8K shares	$1.3M 85.2K shares
Global Alpha Capital Management Ltd. Long Only Manager	−$366.8K −24.5K shares	$23.3M 1.6M shares
DIMENSIONAL FUND ADVISORS LP Long Only Manager	−$359.7K −24.0K shares	$12.2M 812.9K shares
VANGUARD GROUP INC Institution	−$303.6K −20.3K shares	$8.8M 588.8K shares
JACOBS LEVY EQUITY MANAGEMENT, INC Hedge Fund•Quant	−$288.5K −19.3K shares	$1.1M 73.3K shares
U Universal- Beteiligungs- und Servicegesellschaft mbH Institution	−$276.9K −18.5K shares	$1.6M 103.8K shares
RENAISSANCE TECHNOLOGIES LLC Hedge Fund•Quant	−$266.5K −17.8K shares	$5.2M 346.0K shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	−$229.1K −14.1K shares	Sold Off 0 shares

Entry and Exit Activity

Institutions that initiated new positions or completely exited ATNI in Q3 2025

New Positions: 5
New Value: $2.2M
Exited Positions: 9
Exited Value: $1.3M

New Positions

Institution	Position Value
Ballast Asset Management, LP Long Only Manager	$1.9M 126.7K shares
Diametric Capital, LP Hedge Fund•Long/Short	$299.7K 20.0K shares
O Optiver Holding B.V. Institution	$2.5K 164.0 shares
Transamerica Financial Advisors, Inc. Institution	$381.0 25.0 shares
Sunbelt Securities, Inc. RIA/Wealth	$180.0 12.0 shares

Exited Positions

Institution	Previous Position
SummerHaven Investment Management, LLC Long Only Manager	$626.3K 38.5K shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$229.1K 14.1K shares
B Brevan Howard Capital Management LP Institution	$186.4K 11.5K shares
$DEUTSCHE BANK AG\ logo$ DEUTSCHE BANK AG\ Institution	$164.5K 10.1K shares
New Age Alpha Advisors, LLC Hedge Fund•Multi-Strategy	$124.5K 7.7K shares
$US BANCORP \DE\ logo$ US BANCORP \DE\ Institution	$6.8K 420.0 shares
BARROW HANLEY MEWHINNEY & STRAUSS LLC Long Only Manager	$1.3K 80.0 shares
S SIERRA OCEAN, LLC RIA/Wealth	$455.0 28.0 shares
S Skopos Labs, Inc. RIA/Wealth	$130.0 8.0 shares

Options Activity

Institutions with the largest Call and Put options positions in ATNI as of Q3 2025

Call Positions: 0
Call Value: -
Put Positions: 0
Put Value: -

Call Positions

Institution	Position Value
No call positions found

Put Positions

Institution	Position Value
No put positions found

Most Committed Institutions

Institutions with ATNI as the highest % of their portfolio as of Q3 2025

Institution	Key People	Portfolio Weight	Ownership	Owned Since	Total AUM (Long)
Global Alpha Capital Management Ltd. Long Only Manager	Robert Beauregard President	1.33% $23.3M	10.22% 1.6M shares	Q2 2015 Held for 10y 5m	$1.7B
Ballast Asset Management, LP Long Only Manager	Ragen R Stienke Managing Partner	0.87% $1.9M	0.83% 126.7K shares	Q3 2025 Held for 2 months	$219.1M
Harbor Asset Planning, Inc. RIA/Wealth	Scott Howard Leabman President	0.24% $272.5K	0.12% 18.2K shares	Q2 2025 Held for 5 months	$111.7M
I Invenomic Capital Management LP Hedge Fund•Long/Short	Benjamin Robert Deschaine President	0.14% $2.7M	1.20% 183.5K shares	Q4 2024 Held for 11 months	$1.9B
Diametric Capital, LP Hedge Fund•Long/Short	David Richard Salvietti COO	0.11% $299.7K	0.13% 20.0K shares	Q3 2025 Held for 2 months	$264.8M
B BROWN BROTHERS HARRIMAN & CO RIA/Wealth	David Alan Miller Founder	0.06% $9.9M	4.34% 662.5K shares	Q4 2017 Held for 7y 11m	$16.4B
E Empirical Finance, LLC Institution	-	0.05% $989.1K	0.43% 66.1K shares	Q2 2025 Held for 5 months	$2.1B
GSA CAPITAL PARTNERS LLP Hedge Fund•Quant	David Khabie-Zeitoune CEO	0.04% $491.0K	0.21% 32.8K shares	Q2 2025 Held for 5 months	$1.1B
B BRIDGEWAY CAPITAL MANAGEMENT INC Long Only Manager	John Noland Ryan Montgomery CEO	0.04% $2.0M	0.86% 131.2K shares	≤ Q2 2013 Held for 12y 5m+	$4.7B
Portland Global Advisors LLC RIA/Wealth	John Barker Sullivan CEO	0.04% $356.1K	0.16% 23.8K shares	Q2 2019 Held for 6y 5m	$895.6M

Hedge Fund Spotlight

Discover hedge funds investing in ATNI

JACOBS LEVY EQUITY MANAGEMENT, INC

Hedge Fund • Quant

Portfolio ManagerBruce Ira Jacobs

Portfolio Value: $25.2B
Positions: 953
Last Reported: Q3 2025

Sector Allocation

Position in ATN International

Market Value: $1.1M
Shares Held: 73.3K
Portfolio Weight: 0.00%
Owned Since: 2024-Q2

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