ATNI · ATN International, Inc. · Holdings
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Institutional Ownership Trend
Superinvestors Holding ATNI
All superinvestors →Holder Concentration
Across 133 13F filersWho Holds ATNI
Last 8 quarters through Sep 30, 2026 (filing window open)Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.
Jun 30, 2026, the newest closed quarter: 133 filers, like-for-like change +3.8%; actively managed books +4.9%; index-like books +0.7%.
| Holder type | Share | Filers | Change |
|---|---|---|---|
| Registered adviser | 34.4% | 64 | +6.0% |
| Exempt adviser | 0.3% | 3 | +17.5% |
| Adviser | 16.6% | 8 | -0.6% |
| Bank | 13.4% | 13 | +3.0% |
| Insurer | 0.2% | 1 | new |
| Benefit plan | 0.4% | 3 | +82.5% |
| Non-US | 0.5% | 5 | +68.5% |
| Holding company | 15.4% | 6 | +0.8% |
| Unknown | 18.8% | 30 | +3.6% |
| Style | Share | Filers | Change |
|---|---|---|---|
| Index-like | 26.9% | 18 | +0.7% |
| Systematic-like | 7.3% | 11 | +9.4% |
| Concentrated | 0.6% | 15 | +169.6% |
| Diversified active | 65.2% | 89 | +3.8% |
| Not measured | 0.0% | 0 | — |
| Unknown | 0.0% | 0 | — |
| Turnover | Share | Filers | Change |
|---|---|---|---|
| Low turnover | 49.3% | 78 | +3.1% |
| Medium turnover | 36.7% | 33 | +4.5% |
| High turnover | 7.8% | 18 | +7.5% |
| Unknown | 6.2% | 4 | +0.6% |
| Not measured | 0.0% | 0 | — |
| Holding horizon | Share | Filers | Change |
|---|---|---|---|
| Short horizon | 6.8% | 8 | +2.7% |
| Medium horizon | 13.8% | 22 | -0.1% |
| Long horizon | 77.5% | 96 | +4.2% |
| Unknown | 1.9% | 7 | +20.4% |
| Not measured | 0.0% | 0 | — |
| 13F book size | Share | Filers | Change |
|---|---|---|---|
| Under $1B | 1.9% | 13 | +14.3% |
| $1B to $10B | 20.6% | 32 | +1.6% |
| $10B to $100B | 21.7% | 37 | +2.1% |
| $100B or more | 55.8% | 51 | +4.9% |
| Not measured | 0.0% | 0 | — |
| Client base | Share | Filers | Change |
|---|---|---|---|
| Individuals and high net worth | 3.0% | 25 | +63.1% |
| Pooled investment vehicles | 7.5% | 11 | +10.8% |
| Registered funds and BDCs | 20.7% | 10 | -0.3% |
| Pension and profit sharing plans | 0.0% | 1 | 0.0% |
| Insurance companies | 0.3% | 3 | +3.2% |
| Governments and sovereign funds | 0.5% | 3 | -39.7% |
| Other investment advisers | 0.1% | 3 | -4.5% |
| Diversified | 2.4% | 8 | +26.0% |
| Unknown | 65.6% | 69 | +2.6% |
| Private funds | Share | Filers | Change |
|---|---|---|---|
| Hedge funds | 10.3% | 21 | +5.2% |
| Private equity funds | 0.2% | 4 | +155.9% |
| Venture capital funds | 0.0% | 1 | +80.0% |
| Real estate funds | 0.0% | 2 | -7.1% |
| Securitized asset funds | 0.0% | 1 | 0.0% |
| Other private funds | 11.6% | 8 | +2.0% |
| Mixed private funds | 0.2% | 1 | -2.9% |
| Private funds, type not stated | 0.5% | 1 | +176.3% |
| No private funds | 12.1% | 28 | +7.7% |
| Unknown | 65.3% | 66 | +2.5% |
| Location | Share | Filers | Change |
|---|---|---|---|
| United States | 81.8% | 109 | +4.7% |
| Outside the US | 18.2% | 24 | -0.4% |
The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.
How the mix is measured
Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.
Excluded 2 holders with no observed 2026-06-30 13F.
Conviction and Crowding
133 13F filers, quarter ended Jun 30, 2026Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.
Managers in the top fifth by current three-year FundScore alpha were net buyers of $0 (0 buying, 0 selling).
Estimated Holder Cost Basis
Quarter ended Jun 30, 2026, on that quarter's share basisEstimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.
Estimated cost covers 29.3% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.
Shared Holders
Companies ATNI's active holders also own, quarter ended Dec 31, 2025Shareholder Targets
13F filers that own its peers but not ATNI, quarter ended Dec 31, 2025Found through its holder-overlap peers: KO, IBM, MRK, PG, COST, ABBV, LLY, XOM, JNJ, V, AAPL, MSFT. 6,819 filers in all.
| # | Filer | In peers | Largest peers |
|---|---|---|---|
| 1 | NORGES BANK Non-US, Index-like | $162,370,480,717 12 held | AAPL, MSFT, LLY |
| 2 | LILLY ENDOWMENT INC Unknown, Unknown | $99,075,312,953 1 held | LLY |
| 3 | Berkshire Hathaway Inc Insurer, Concentrated | $92,835,737,477 3 held | AAPL, KO, V |
| 4 | Capital Research Global Investors Adviser, Diversified active | $92,049,115,681 12 held | MSFT, LLY, AAPL |
| 5 | Capital International Investors Adviser, Diversified active | $87,210,440,569 11 held | MSFT, AAPL, LLY |
| 6 | WELLINGTON MANAGEMENT GROUP LLP Holding company, Diversified active | $85,731,746,746 12 held | MSFT, AAPL, LLY |
| 7 | Capital World Investors Adviser, Diversified active | $80,386,189,905 11 held | MSFT, LLY, V |
| 8 | FRANKLIN RESOURCES INC Adviser, Diversified active | $60,272,264,394 12 held | MSFT, AAPL, XOM |
| 9 | Amundi Holding company, Index-like | $54,058,435,016 12 held | AAPL, MSFT, LLY |
| 10 | Fisher Asset Management, LLC Adviser, Diversified active | $47,944,948,464 12 held | AAPL, MSFT, LLY |
Fund Ownership of ATNI by Fund Type
Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026Index funds and index ETFs hold 9.08% of shares outstanding.
| Fund type | Of shares outstanding | Shares |
|---|---|---|
| Index funds | 2.30% | 354,730 |
| Index ETFs | 6.77% | 1,043,139 |
| Active ETFs | 3.53% | 544,013 |
| Active funds | 6.07% | 934,880 |
| Unclassified | 3.54% | 545,286 |
| All registered funds | 22.22% | 3,422,048 |
How fund types are measured
Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Mid Global Alpha Capital Management Ltd. Adviser | $38,259,401 | 15.22% | 1,444,296 | Shares | 2026-08-13 | |
| Mega BlackRock, Inc. Holding company | $24,457,021 | 9.73% | 923,255 | Shares | 2026-08-07 | |
| Mega DIMENSIONAL FUND ADVISORS LP Registered adviser | $19,267,897 | 7.66% | 727,365 | Shares | 2026-08-11 | |
| Large BROWN BROTHERS HARRIMAN & CO Bank | $17,550,790 | 6.98% | 662,544 | Shares | 2026-08-12 | |
| Mega AMERICAN CENTURY COMPANIES INC | $15,195,803 | 6.04% | 573,643 | Shares | 2026-08-12 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC Registered adviser | $10,971,548 | 4.36% | 414,177 | Shares | 2026-08-13 | |
| Large ACADIAN ASSET MANAGEMENT LLC | $10,060,054 | 4.00% | 379,768 | Shares | 2026-08-13 | |
| Mega D. E. Shaw & Co., Inc. | $9,937,378 | 3.95% | 375,137 | Shares | 2026-08-14 | |
| Large RENAISSANCE TECHNOLOGIES LLC Registered adviser | $8,501,488 | 3.38% | 320,932 | Shares | 2026-08-13 | |
| Mega MORGAN STANLEY Holding company | $7,354,495 | 2.93% | 277,633 | Shares | 2026-08-13 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC Registered adviser | $7,168,007 | 2.85% | 270,593 | Shares | 2026-08-12 | |
| Mega STATE STREET CORP Bank | $5,878,369 | 2.34% | 221,909 | Shares | 2026-09-22 | |
| Mid BRIDGEWAY CAPITAL MANAGEMENT, LLC Registered adviser | $3,913,897 | 1.56% | 147,750 | Shares | 2026-08-14 | |
| Small Ballast Asset Management, LP | $3,609,077 | 1.44% | 136,243 | Shares | 2026-08-13 | |
| Mega FMR LLC Holding company | $3,359,064 | 1.34% | 126,805 | Shares | 2026-08-13 | |
| Mega Bank of New York Mellon Corp Bank | $3,323,088 | 1.32% | 125,447 | Shares | 2026-08-06 | |
| Mega NORTHERN TRUST CORP Bank | $3,023,911 | 1.20% | 114,153 | Shares | 2026-08-13 | |
| Large GABELLI FUNDS LLC Registered adviser | $2,903,304 | 1.15% | 109,600 | Shares | 2026-08-12 | |
| Mega VANGUARD PORTFOLIO MANAGEMENT LLC Registered adviser | $2,752,284 | 1.09% | 103,899 | Shares | 2026-08-13 | |
| Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP Registered adviser | $2,682,642 | 1.07% | 101,270 | Shares | 2026-08-13 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $2,607,966 | 1.04% | 98,451 | Shares | 2026-09-02 | |
| Large Empowered Funds, LLC Registered adviser | $2,480,788 | 0.99% | 93,650 | Shares | 2026-08-17 | |
| Mega GOLDMAN SACHS GROUP INC Holding company | $2,382,748 | 0.95% | 89,949 | Shares | 2026-08-14 | |
| Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC Registered adviser | $2,180,232 | 0.87% | 82,304 | Shares | 2026-08-14 | |
| Mega TWO SIGMA INVESTMENTS, LP Registered adviser | $2,095,253 | 0.83% | 79,096 | Shares | 2026-08-14 | |
| Large O'SHAUGHNESSY ASSET MANAGEMENT, LLC Registered adviser | $1,806,353 | 0.72% | 68,190 | Shares | 2026-08-13 | |
| Mega VANGUARD FIDUCIARY TRUST CO | $1,767,227 | 0.70% | 66,713 | Shares | 2026-08-13 | |
| Mid SEGALL BRYANT & HAMILL, LLC Registered adviser | $1,652,022 | 0.66% | 62,364 | Shares | 2026-08-12 | |
| Mega JPMORGAN CHASE & CO Bank | $1,483,861 | 0.59% | 56,016 | Shares | 2026-08-12 | |
| Mid RITHOLTZ WEALTH MANAGEMENT Registered adviser | $1,301,162 | 0.52% | 49,119 | Shares | 2026-08-11 | |
| Mega SEI INVESTMENTS CO Holding company | $1,184,871 | 0.47% | 44,729 | Shares | 2026-08-14 | |
| Mega AQR CAPITAL MANAGEMENT LLC Registered adviser | $1,170,298 | 0.47% | 44,179 | Shares | 2026-08-14 | |
| Large GAMCO INVESTORS, INC. ET AL Registered adviser | $1,125,825 | 0.45% | 42,500 | Shares | 2026-08-12 | |
| Mega FRANKLIN RESOURCES INC Adviser | $1,121,849 | 0.45% | 42,350 | Shares | 2026-08-13 | |
| Mid Summit Trail Advisors, LLC Registered adviser | $1,065,401 | 0.42% | 40,219 | Shares | 2026-08-11 | |
| Large Federation des caisses Desjardins du Quebec | $1,054,805 | 0.42% | 39,819 | Shares | 2026-08-14 | |
| Large STATE OF WISCONSIN INVESTMENT BOARD Benefit plan | $987,282 | 0.39% | 37,270 | Shares | 2026-08-14 | |
| Large LAZARD ASSET MANAGEMENT LLC Adviser | $884,686 | 0.35% | 33,397 | Shares | 2026-08-14 | |
| Mega BNP PARIBAS ARBITRAGE, SA Non-US | $828,395 | 0.33% | 31,272 | Shares | 2026-08-13 | |
| Large Quantinno Capital Management LP Registered adviser | $813,031 | 0.32% | 30,692 | Shares | 2026-08-13 | |
| Large JACOBS LEVY EQUITY MANAGEMENT, INC Registered adviser | $805,878 | 0.32% | 30,422 | Shares | 2026-08-14 | |
| Large Janney Montgomery Scott LLC Adviser | $777,799 | 0.31% | 29,362 | Shares | 2026-08-05 | |
| Mega BARCLAYS PLC Bank | $747,785 | 0.30% | 28,229 | Shares | 2026-08-14 | |
| Large Connor, Clark & Lunn Investment Management Ltd. Registered adviser | $739,256 | 0.29% | 27,907 | Shares | 2026-08-13 | |
| Mid XTX Topco Ltd | $730,249 | 0.29% | 27,567 | Shares | 2026-08-14 | |
| Mid Voleon Capital Management LP Registered adviser | $722,170 | 0.29% | 27,262 | Shares | 2026-08-14 | |
| Mid Verdence Capital Advisors LLC Registered adviser | $700,757 | 0.28% | 25,189 | Shares | 2026-10-26 | |
| Large Trexquant Investment LP Registered adviser | $680,316 | 0.27% | 25,682 | Shares | 2026-08-14 | |
| Mega BANK OF AMERICA CORP /DE/ Bank | $677,614 | 0.27% | 25,580 | Shares | 2026-08-14 | |
| Mega RAYMOND JAMES FINANCIAL INC | $670,885 | 0.27% | 25,326 | Shares | 2026-08-14 | |
| Mega UBS Group AG Bank | $651,440 | 0.26% | 24,592 | Shares | 2026-08-13 | |
| Mid Engineers Gate Manager LP | $601,905 | 0.24% | 22,722 | Shares | 2026-08-14 | |
| Large Magnetar Financial LLC Registered adviser | $591,865 | 0.24% | 22,343 | Shares | 2026-08-14 | |
| Large NewEdge Advisors, LLC Registered adviser | $558,170 | 0.22% | 21,071 | Shares | 2026-08-12 | |
| Small Harbor Asset Planning, Inc. Registered adviser | $533,865 | 0.21% | 19,190 | Shares | 2026-10-23 | |
| Mega Nuveen, LLC | $523,759 | 0.21% | 19,772 | Shares | 2026-08-11 | |
| Mid Hillsdale Investment Management Inc. Registered adviser | $503,310 | 0.20% | 19,000 | Shares | 2026-08-12 | |
| Mega JANE STREET GROUP, LLC | $491,415 | 0.20% | 18,551 | Shares | 2026-08-14 | |
| Mega VOYA INVESTMENT MANAGEMENT LLC Registered adviser | $471,098 | 0.19% | 17,784 | Shares | 2026-08-12 | |
| Mega ALLIANCEBERNSTEIN L.P. Registered adviser | $436,820 | 0.17% | 16,490 | Shares | 2026-08-14 | |
| Mid WINTON GROUP Ltd | $419,760 | 0.17% | 15,846 | Shares | 2026-08-07 | |
| Large SCOTIA CAPITAL INC. | $416,449 | 0.17% | 15,721 | Shares | 2026-08-11 | |
| Mid OCCUDO QUANTITATIVE STRATEGIES LP Registered adviser | $395,919 | 0.16% | 14,946 | Shares | 2026-08-13 | |
| Mega PRICE T ROWE ASSOCIATES INC /MD/ Registered adviser | $385,614 | 0.15% | 14,557 | Shares | 2026-08-14 | |
| Large PRUDENTIAL FINANCIAL INC Insurer | $379,813 | 0.15% | 14,338 | Shares | 2026-08-12 | |
| Mega Qube Research & Technologies Ltd Exempt adviser | $366,727 | 0.15% | 13,844 | Shares | 2026-08-14 | |
| Mega Invesco Ltd. Adviser | $358,302 | 0.14% | 13,526 | Shares | 2026-08-14 | |
| Mega HSBC HOLDINGS PLC | $339,019 | 0.13% | 12,798 | Shares | 2026-08-14 | |
| Mega RHUMBLINE ADVISERS Registered adviser | $334,515 | 0.13% | 12,628 | Shares | 2026-08-12 | |
| Mega DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | $321,111 | 0.13% | 12,122 | Shares | 2026-08-14 | |
| Mega MILLENNIUM MANAGEMENT LLC Registered adviser | $300,476 | 0.12% | 11,343 | Shares | 2026-08-14 | |
| Large Brevan Howard Capital Management LP Exempt adviser | $278,250 | 0.11% | 10,504 | Shares | 2026-08-14 | |
| Large Squarepoint Ops LLC Registered adviser | $277,615 | 0.11% | 10,480 | Shares | 2026-08-14 | |
| Mid ALGERT GLOBAL LLC Registered adviser | $275,231 | 0.11% | 10,390 | Shares | 2026-08-13 | |
| Mega DEUTSCHE BANK AG\ Non-US | $261,853 | 0.10% | 9,885 | Shares | 2026-08-07 | |
| Small Dynamic Technology Lab Private Ltd | $261,800 | 0.10% | 9,883 | Shares | 2026-08-13 | |
| Mid Cornerstone Investment Partners, LLC Registered adviser | $255,602 | 0.10% | 9,649 | Shares | 2026-08-07 | |
| Mega WELLS FARGO & COMPANY/MN Bank | $226,726 | 0.09% | 8,559 | Shares | 2026-08-14 | |
| Mega Creative Planning Registered adviser | $225,376 | 0.09% | 8,508 | Shares | 2026-08-13 | |
| Mega CANADA PENSION PLAN INVESTMENT BOARD Non-US | $219,867 | 0.09% | 8,300 | Shares | 2026-08-14 | |
| Mid MEEDER ASSET MANAGEMENT INC Registered adviser | $217,376 | 0.09% | 8,206 | Shares | 2026-08-07 | |
| Small D'Orazio & Associates, Inc. Registered adviser | $217,085 | 0.09% | 8,195 | Shares | 2026-07-28 | |
| Mega AMERIPRISE FINANCIAL INC Adviser | $206,463 | 0.08% | 7,794 | Shares | 2026-08-14 | |
| Micro Semanteon Capital Management, LP Exempt adviser | $203,734 | 0.08% | 7,691 | Shares | 2026-08-12 | |
| Large MetLife Investment Management, LLC Registered adviser | $156,211 | 0.06% | 5,897 | Shares | 2026-08-14 | |
| Mega CITIGROUP INC Bank | $153,614 | 0.06% | 5,799 | Shares | 2026-08-03 | |
| Mega Russell Investments Group, Ltd. | $151,335 | 0.06% | 5,713 | Shares | 2026-08-06 | |
| Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $123,708 | 0.05% | 4,670 | Shares | 2026-08-14 | |
| Large NEW YORK STATE COMMON RETIREMENT FUND | $121,615 | 0.05% | 4,591 | Shares | 2026-07-29 | |
| Large FIFTH THIRD BANCORP Bank | $114,569 | 0.05% | 4,325 | Shares | 2026-08-05 | |
| Large PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO | $104,158 | 0.04% | 3,932 | Shares | 2026-08-11 | |
| Mega Vanguard Global Advisers, LLC Registered adviser | $102,436 | 0.04% | 3,867 | Shares | 2026-08-13 | |
| Mid Copeland Capital Management, LLC Adviser | $79,036 | 0.03% | 2,841 | Shares | 2026-10-13 | |
| Large STRS OHIO Benefit plan | $71,523 | 0.03% | 2,700 | Shares | 2026-07-30 | |
| Large Police & Firemen's Retirement System of New Jersey | $60,079 | 0.02% | 2,268 | Shares | 2026-07-23 | |
| Large CANADA LIFE ASSURANCE Co | $44,821 | 0.02% | 1,692 | Shares | 2026-08-13 | |
| Mid SIGNATUREFD, LLC Registered adviser | $35,720 | 0.01% | 1,284 | Shares | 2026-10-23 | |
| Mid Ameritas Investment Partners, Inc. Registered adviser | $25,615 | 0.01% | 967 | Shares | 2026-08-13 | |
| Mega Legal & General Group Plc | $24,556 | 0.01% | 927 | Shares | 2026-08-14 | |
| Mid Tower Research Capital LLC (TRC) | $21,456 | 0.01% | 810 | Shares | 2026-08-11 |
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