Latest Period
Q1 2026
Security Snapshot
ATN International, Inc. - Common Stock, par value $.01 per share (ATNI) Institutional Ownership
CUSIP: 00215F107
13F Institutional Holders and Ownership History from Q4 2015 to Q2 2026
Institutions Reporting
123
Shares (Excl. Options)
9,163,242
Price
$27.22
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- Security type / class
- Equity / Common Stock, par value $.01 per share
- Symbol
- ATNI on Nasdaq
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 9,163,242
- Total 13F value
- $249,437,377
- Portfolio coverage rank
- 0%
- Share change
- +331,219
- Value change
- +$9,473,552
- Number of holders
- 123
- Shares outstanding
- 15,381,181
- SEC-reported price per share
- $26.50
- Insider filing price
- $26.50
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- ATNI - ATN International, Inc. - Common Stock, par value $.01 per share is tracked under CUSIP 00215F107.
- 123 institutions reported positions in Q1 2026.
- 4 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 123 to 1 between Q1 2026 and Q2 2026.
- SEC-reported value moved from $249,437,377 to $1,007.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 123 institutions filings for Q1 2026.
Security key
00215F107
Latest holder period
Q1 2026
13F holders
123
13D/G owners
4
CIK / CUSIP context first
Open Q1 2026 holders
ATNI full holder history
ATN International, Inc. SEC filings
ATN International, Inc. company facts
ATN International, Inc. insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 00215F107:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
4
Security
ATNI
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| PRIOR CORNELIUS B JR | 29% | $121,426,671 | 4,454,390 | PRIOR CORNELIUS B JR | 20 Apr 2026 | |||
| Global Alpha Capital Management Ltd. | 10% | $26,786,384 | 1,533,279 | Global Alpha Capital Management Ltd. | 31 Dec 2024 | |||
| BlackRock, Inc. | 4.9% | $13,190,007 | 755,009 | BlackRock, Inc. | 31 Mar 2025 | |||
| DIMENSIONAL FUND ADVISORS LP | 4.9% | -12% | $20,369,876 | -$2,687,703 | 748,312 | -12% | Dimensional Fund Advisors LP | 31 Mar 2026 |
As of 31 Mar 2026, 123 institutional investors reported holding 9,163,242 shares of ATN International, Inc. - Common Stock, par value $.01 per share (ATNI). This represents 60% of the company’s total 15,381,181 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
51%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| Global Alpha Capital Management Ltd. | 9.5% | 1,456,998 | 0% | 2.4% | $39,659,486 |
| BlackRock, Inc. | 5.9% | 902,189 | -4.2% | 0% | $24,557,585 |
| DIMENSIONAL FUND ADVISORS LP | 4.9% | 748,312 | -4.1% | 0% | $20,369,956 |
| BROWN BROTHERS HARRIMAN & CO | 4.3% | 662,544 | 0% | 0.1% | $18,034,448 |
| AMERICAN CENTURY COMPANIES INC | 3.1% | 474,944 | +16% | 0.01% | $12,927,976 |
| VANGUARD CAPITAL MANAGEMENT LLC | 2.7% | 422,303 | 0% | 0% | $11,495,088 |
| D. E. Shaw & Co., Inc. | 2.4% | 373,571 | -9.4% | 0.01% | $10,168,603 |
| ACADIAN ASSET MANAGEMENT LLC | 2.4% | 363,204 | +37% | 0.01% | $9,881,000 |
| RENAISSANCE TECHNOLOGIES LLC | 2.2% | 337,735 | -1.8% | 0.01% | $9,193,147 |
| MORGAN STANLEY | 1.8% | 280,865 | +88% | 0% | $7,645,167 |
| GEODE CAPITAL MANAGEMENT, LLC | 1.6% | 252,016 | +1.9% | 0% | $6,861,642 |
| STATE STREET CORP | 1.5% | 227,527 | -0.58% | 0% | $6,255,212 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 0.96% | 147,750 | +17% | 0.08% | $4,021,755 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 0.9% | 139,046 | +45% | 0% | $3,784,832 |
| Ballast Asset Management, LP | 0.89% | 137,593 | +12% | 1.7% | $3,745,281 |
| Bank of New York Mellon Corp | 0.8% | 122,634 | +0.93% | 0% | $3,338,087 |
| GABELLI FUNDS LLC | 0.76% | 116,373 | -26% | 0.02% | $3,167,673 |
| FMR LLC | 0.7% | 107,013 | -30% | 0% | $2,912,894 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 0.62% | 94,958 | 0% | 0% | $2,584,757 |
| Empowered Funds, LLC | 0.61% | 93,650 | +9.9% | 0.02% | $2,549,153 |
| SEI INVESTMENTS CO | 0.56% | 85,747 | +115% | 0% | $2,334,033 |
| NORTHERN TRUST CORP | 0.54% | 83,690 | +3% | 0% | $2,278,042 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 0.53% | 81,574 | +0.26% | 0% | $2,220,444 |
| GOLDMAN SACHS GROUP INC | 0.49% | 74,972 | -20% | 0% | $2,040,748 |
| Trexquant Investment LP | 0.45% | 68,478 | -30% | 0.01% | $1,863,971 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
43
Latest
Q1 2026
Rows shown
1-25 of 43
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q2 | 38 | $1,007 | $26.50 | 1 | |
| 2026 Q1 | 9,163,242 | $249,437,377 | +$9,473,552 | $27.22 | 123 |
| 2025 Q4 | 8,808,356 | $200,753,725 | -$4,434,648 | $22.80 | 113 |
| 2025 Q3 | 9,124,731 | $136,668,207 | -$1,096,264 | $14.97 | 105 |
| 2025 Q2 | 9,194,673 | $149,485,095 | -$2,046,575 | $16.25 | 99 |
| 2025 Q1 | 9,301,942 | $188,977,175 | -$1,105,577 | $20.31 | 105 |
| 2024 Q4 | 9,431,386 | $158,601,374 | -$9,434,106 | $16.81 | 102 |
| 2024 Q3 | 9,698,354 | $313,715,609 | -$2,140,169 | $32.34 | 119 |
| 2024 Q2 | 9,615,473 | $219,302,746 | -$13,045,316 | $22.80 | 119 |
| 2024 Q1 | 9,949,962 | $313,585,535 | -$9,307,820 | $31.50 | 127 |
| 2023 Q4 | 10,159,986 | $396,890,470 | +$1,471,174 | $38.97 | 112 |
| 2023 Q3 | 10,140,441 | $320,961,424 | -$4,562,055 | $31.56 | 109 |
| 2023 Q2 | 10,325,258 | $377,997,099 | -$1,566,225 | $36.60 | 115 |
| 2023 Q1 | 10,325,577 | $422,488,338 | +$2,299,210 | $40.92 | 117 |
| 2022 Q4 | 10,321,036 | $467,757,065 | -$3,470,368 | $45.31 | 125 |
| 2022 Q3 | 10,421,669 | $402,033,620 | -$2,346,415 | $38.57 | 121 |
| 2022 Q2 | 10,445,477 | $490,048,749 | +$17,844,127 | $46.91 | 118 |
| 2022 Q1 | 10,145,880 | $404,584,343 | -$164,894 | $39.88 | 113 |
| 2021 Q4 | 10,142,314 | $405,290,946 | -$11,192,216 | $39.95 | 107 |
| 2021 Q3 | 10,232,596 | $479,409,098 | -$6,340,613 | $46.85 | 115 |
| 2021 Q2 | 10,371,365 | $471,852,801 | -$9,782,240 | $45.49 | 113 |
| 2021 Q1 | 10,579,332 | $519,727,352 | +$8,870,598 | $49.12 | 109 |
| 2020 Q4 | 10,421,336 | $435,334,072 | -$4,470,646 | $41.76 | 117 |
| 2020 Q3 | 10,525,315 | $527,829,004 | -$13,943,535 | $50.14 | 122 |
| 2020 Q2 | 10,766,786 | $652,086,626 | +$11,425,120 | $60.57 | 125 |