ATNI · ATN International, Inc. · Shareholders & Ownership

$25.81 -0.14 (-0.54%) Q2 2026 earnings call transcript

Russell 2000 member Rebalance outlook locked

Market Cap

$397.56M

15.40M

Volume · Oct 28 111.21K Avg daily vol (3M) 86.12K

Every disclosed holder of ATNI in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.

How the holder list picks a filing →

Who Owns ATNI

13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions

Holder group	Holders	Shares	% Out	Summed
Institutional (13F)	133	9,489,062	61.60%	Yes
Insiders (Forms 3, 4, 5)	12	5,195,989	33.73%	Yes
13D/G-only blocks	0	0	0.00%	Yes
Remaining	—	718,306	4.66%	Rest
Registered funds (N-PORT, not summed)	171	3,426,296	22.24%	No

Shares outstanding: 15,403,357, the issuer's latest cover-page count restated onto today's split basis.

13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.

Holders of ATNI

One row per holder Every filing By ultimate parent

All 13F Funds Insiders 13D/G Non-US

#	Holder	Shares	% Out	Change	As of	Notes
1	PRIOR CORNELIUS B JR Insider CIK 922147 · Oct 1, 2026 10% Owner, issuer-wide	3,985,204	25.87%	-13,500	Oct 1, 2026	10% Owner, issuer-wide
1.1	PRIOR CORNELIUS B JR 13D CIK 922147 · Unknown · Aug 10, 2026 Item 4 purpose: Other not summed	4,342,128	28.19%	-112,262	Aug 10, 2026	not summed
2	Global Alpha Capital Management Ltd. 13F CIK 1584691 · Investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,444,296	9.38%	-12,702	Jun 30, 2026	carried, not yet filed for the newest quarter
3	BlackRock, Inc. 13F CIK 2012383 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	923,255	5.99%	+21,066	Jun 30, 2026	carried, not yet filed for the newest quarter
3.1	iShares Russell 2000 ETF Fund S000004344 · Registered fund · Jun 30, 2026 iShares Trust, not summed	254,010	1.65%	+9,982	Jun 30, 2026	iShares Trust, not summed
3.2	iShares Russell 2000 Value ETF Fund S000004342 · Registered fund · Jun 30, 2026 iShares Trust, not summed	95,179	0.62%	+7,890	Jun 30, 2026	iShares Trust, not summed
3.3	iShares Micro-Cap ETF Fund S000004439 · Registered fund · Jun 30, 2026 iShares Trust, not summed	34,015	0.22%	+9,005	Jun 30, 2026	iShares Trust, not summed
3.4	Master Small Cap Index Series Fund S000002716 · Registered fund · Jun 30, 2026 Quantitative Master Series LLC, not summed	17,660	0.11%	0	Jun 30, 2026	Quantitative Master Series LLC, not summed
3.5	Diversified Equity Alpha Master Portfolio Fund S000004282 · Registered fund · Jun 30, 2026 Master Investment Portfolio, not summed	5,868	0.04%	-1,897	Jun 30, 2026	Master Investment Portfolio, not summed
4	PRIOR MICHAEL T Insider CIK 1244465 · Mar 25, 2026 Director, issuer-wide	748,425	4.86%	-2,378	Mar 25, 2026	Director, issuer-wide
5	DIMENSIONAL FUND ADVISORS LP 13F CIK 354204 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	727,365	4.72%	-20,947	Jun 30, 2026	carried, not yet filed for the newest quarter
5.1	U.S. SMALL CAP VALUE PORTFOLIO Fund S000000987 · Registered fund · Jul 31, 2026 DFA INVESTMENT DIMENSIONS GROUP INC, not summed	112,811	0.73%	-13,223	Jul 31, 2026	DFA INVESTMENT DIMENSIONS GROUP INC, not summed
5.2	Dimensional US Small Cap Value ETF Fund S000075151 · Registered fund · Jul 31, 2026 Dimensional ETF Trust, not summed	85,367	0.55%	+7,859	Jul 31, 2026	Dimensional ETF Trust, not summed
5.3	Dimensional U.S. Targeted Value ETF Fund S000070901 · Registered fund · Jul 31, 2026 Dimensional ETF Trust, not summed	76,407	0.50%	-17,006	Jul 31, 2026	Dimensional ETF Trust, not summed
5.4	U.S. Targeted Value Portfolio Fund S000000970 · Registered fund · Jul 31, 2026 DFA INVESTMENT DIMENSIONS GROUP INC, not summed	68,130	0.44%	-7,249	Jul 31, 2026	DFA INVESTMENT DIMENSIONS GROUP INC, not summed
5.5	U.S. SMALL CAP PORTFOLIO Fund S000000971 · Registered fund · Jul 31, 2026 DFA INVESTMENT DIMENSIONS GROUP INC, not summed	67,861	0.44%	0	Jul 31, 2026	DFA INVESTMENT DIMENSIONS GROUP INC, not summed
6	BROWN BROTHERS HARRIMAN & CO 13F CIK 14661 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	662,544	4.30%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
7	AMERICAN CENTURY COMPANIES INC 13F CIK 748054 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	573,643	3.72%	+98,699	Jun 30, 2026	carried, not yet filed for the newest quarter
8	Avantis U.S. Small Cap Value ETF Fund S000066459 · Registered fund · May 31, 2026 American Century ETF Trust, not summed	479,398	3.11%	+87,498	May 31, 2026	American Century ETF Trust, not summed
9	VANGUARD CAPITAL MANAGEMENT LLC 13F CIK 2100119 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	414,177	2.69%	-8,126	Jun 30, 2026	carried, not yet filed for the newest quarter
10	ACADIAN ASSET MANAGEMENT LLC 13F CIK 916542 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	379,768	2.47%	+16,564	Jun 30, 2026	carried, not yet filed for the newest quarter
11	D. E. Shaw & Co., Inc. 13F CIK 1009207 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	375,137	2.44%	+1,566	Jun 30, 2026	carried, not yet filed for the newest quarter
12	RENAISSANCE TECHNOLOGIES LLC 13F CIK 1037389 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	320,932	2.08%	-16,803	Jun 30, 2026	carried, not yet filed for the newest quarter
13	VANGUARD TOTAL STOCK MARKET INDEX FUND Fund S000002848 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	292,008	1.90%	-9,583	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
14	MORGAN STANLEY 13F CIK 895421 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	277,633	1.80%	-3,232	Jun 30, 2026	carried, not yet filed for the newest quarter
15	GEODE CAPITAL MANAGEMENT, LLC 13F CIK 1214717 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	270,593	1.76%	+18,577	Jun 30, 2026	carried, not yet filed for the newest quarter
16	STATE STREET CORP 13F CIK 93751 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	221,909	1.44%	-5,618	Jun 30, 2026	carried, not yet filed for the newest quarter
16.1	STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO Fund S000050332 · Registered fund · Jun 30, 2026 STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed	3,457	0.02%	+200	Jun 30, 2026	STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
16.2	State Street Total Return V.I.S. Fund Fund S000001637 · Registered fund · Jun 30, 2026 STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed	285	0.00%	+14	Jun 30, 2026	STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed
17	BRIDGEWAY CAPITAL MANAGEMENT, LLC 13F CIK 1107261 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	147,750	0.96%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
17.1	Omni Small-Cap Value Fund Fund S000033567 · Registered fund · Jun 30, 2026 Bridgeway Funds, Inc., not summed	30,000	0.19%	0	Jun 30, 2026	Bridgeway Funds, Inc., not summed
17.2	Ultra-Small Company Fund Fund S000004423 · Registered fund · Jun 30, 2026 Bridgeway Funds, Inc., not summed	13,000	0.08%	0	Jun 30, 2026	Bridgeway Funds, Inc., not summed
17.3	Ultra-Small Company Market Fund Fund S000004424 · Registered fund · Jun 30, 2026 Bridgeway Funds, Inc., not summed	11,100	0.07%	0	Jun 30, 2026	Bridgeway Funds, Inc., not summed
18	Ballast Asset Management, LP 13F CIK 1998389 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	136,243	0.88%	-1,350	Jun 30, 2026	carried, not yet filed for the newest quarter
19	FMR LLC 13F CIK 315066 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	126,805	0.82%	+19,792	Jun 30, 2026	carried, not yet filed for the newest quarter
19.1	Fidelity Small Cap Index Fund Fund S000033638 · Registered fund · Jul 31, 2026 Fidelity Salem Street Trust, not summed	114,248	0.74%	+14,423	Jul 31, 2026	Fidelity Salem Street Trust, not summed
19.2	Fidelity Enhanced Small Cap Core ETF Fund S000081807 · Registered fund · Jun 30, 2026 Fidelity Covington Trust, not summed	91,251	0.59%	+9,162	Jun 30, 2026	Fidelity Covington Trust, not summed
19.3	Fidelity Extended Market Index Fund Fund S000006021 · Registered fund · Aug 31, 2026 Fidelity Concord Street Trust, not summed	43,744	0.28%	-5,993	Aug 31, 2026	Fidelity Concord Street Trust, not summed
19.4	Strategic Advisers U.S. Total Stock Fund Fund S000084926 · Registered fund · Aug 31, 2026 Fidelity Rutland Square Trust II, not summed	41,220	0.27%	-9,451	Aug 31, 2026	Fidelity Rutland Square Trust II, not summed
19.5	Select Telecommunications Portfolio Fund S000007485 · Registered fund · Aug 31, 2026 Fidelity Select Portfolios, not summed	40,400	0.26%	—	Aug 31, 2026	Fidelity Select Portfolios, not summed
20	Martin Brad W Insider CIK 1739251 · Mar 25, 2026 Director, CHIEF EXECUTIVE OFFICER, issuer-wide	126,129	0.82%	-1,237	Mar 25, 2026	Director, CHIEF EXECUTIVE OFFICER, issuer-wide
21	Bank of New York Mellon Corp 13F CIK 1390777 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	125,447	0.81%	+2,813	Jun 30, 2026	carried, not yet filed for the newest quarter
22	NORTHERN TRUST CORP 13F CIK 73124 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	114,153	0.74%	+30,463	Jun 30, 2026	carried, not yet filed for the newest quarter
22.1	Small Cap Value Fund Fund S000001246 · Registered fund · Jun 30, 2026 Northern Funds, not summed	21,962	0.14%	—	Jun 30, 2026	Northern Funds, not summed
22.2	Small Cap Index Fund Fund S000001245 · Registered fund · Jun 30, 2026 Northern Funds, not summed	4,931	0.03%	0	Jun 30, 2026	Northern Funds, not summed
22.3	Small Cap Core Fund Fund S000001244 · Registered fund · Jun 30, 2026 Northern Funds, not summed	1,460	0.01%	-64	Jun 30, 2026	Northern Funds, not summed
23	GABELLI FUNDS LLC 13F CIK 1081407 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	109,600	0.71%	-6,773	Jun 30, 2026	carried, not yet filed for the newest quarter
23.1	The Gabelli Focused Growth and Income Fund Fund S000001063 · Registered fund · Jun 30, 2026 Gabelli Equity Series Funds Inc, not summed	67,000	0.44%	-4,221	Jun 30, 2026	Gabelli Equity Series Funds Inc, not summed
24	VANGUARD EXTENDED MARKET INDEX FUND Fund S000002841 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	109,582	0.71%	-399	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
25	VANGUARD PORTFOLIO MANAGEMENT LLC 13F CIK 2100121 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	103,899	0.67%	+8,941	Jun 30, 2026	carried, not yet filed for the newest quarter
26	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 13F CIK 1164508 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	101,270	0.66%	-37,776	Jun 30, 2026	carried, not yet filed for the newest quarter
27	CITADEL ADVISORS LLC 13F CIK 1423053 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	98,451	0.64%	+59,874	Jun 30, 2026	carried, not yet filed for the newest quarter
28	BALLAST SMALL/MID CAP ETF Fund S000070046 · Registered fund · Jun 30, 2026 Unified Series Trust, not summed	95,225	0.62%	-1,350	Jun 30, 2026	Unified Series Trust, not summed
29	Empowered Funds, LLC 13F CIK 1592828 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	93,650	0.61%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
29.1	EA Bridgeway Omni Small-Cap Value ETF Fund S000078089 · Registered fund · Jun 30, 2026 EA Series Trust, not summed	93,650	0.61%	0	Jun 30, 2026	EA Series Trust, not summed
30	GOLDMAN SACHS GROUP INC 13F CIK 886982 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	89,949	0.58%	+14,977	Jun 30, 2026	carried, not yet filed for the newest quarter
30.1	Goldman Sachs Absolute Return Tracker Fund Fund S000020314 · Registered fund · Aug 31, 2026 GOLDMAN SACHS TRUST, not summed	7,272	0.05%	-64	Aug 31, 2026	GOLDMAN SACHS TRUST, not summed
31	Global Macro Capital Opportunities Portfolio Fund S000043509 · Registered fund · Jul 31, 2026 Global Macro Capital Opportunities Portfolio, not summed	85,300	0.55%	0	Jul 31, 2026	Global Macro Capital Opportunities Portfolio, not summed
32	CHARLES SCHWAB INVESTMENT MANAGEMENT INC 13F CIK 884546 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	82,304	0.53%	+730	Jun 30, 2026	carried, not yet filed for the newest quarter
32.1	Schwab U.S. Small-Cap ETF Fund S000026636 · Registered fund · Aug 31, 2026 SCHWAB STRATEGIC TRUST, not summed	46,948	0.30%	-369	Aug 31, 2026	SCHWAB STRATEGIC TRUST, not summed
32.2	Schwab Small-Cap Index Fund Fund S000005912 · Registered fund · Jul 31, 2026 SCHWAB CAPITAL TRUST, not summed	25,042	0.16%	+3,083	Jul 31, 2026	SCHWAB CAPITAL TRUST, not summed
32.3	Schwab U.S. Broad Market ETF Fund S000026631 · Registered fund · Aug 31, 2026 SCHWAB STRATEGIC TRUST, not summed	6,200	0.04%	0	Aug 31, 2026	SCHWAB STRATEGIC TRUST, not summed
32.4	Schwab Total Stock Market Index Fund Fund S000005913 · Registered fund · Jul 31, 2026 SCHWAB CAPITAL TRUST, not summed	5,256	0.03%	0	Jul 31, 2026	SCHWAB CAPITAL TRUST, not summed
33	TWO SIGMA INVESTMENTS, LP 13F CIK 1179392 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	79,096	0.51%	+23,616	Jun 30, 2026	carried, not yet filed for the newest quarter
34	WisdomTree U.S. SmallCap Dividend Fund Fund S000012394 · Registered fund · Jun 30, 2026 WisdomTree Trust, not summed	76,838	0.50%	-3,408	Jun 30, 2026	WisdomTree Trust, not summed
35	O'SHAUGHNESSY ASSET MANAGEMENT, LLC 13F CIK 1423442 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	68,190	0.44%	+54,172	Jun 30, 2026	carried, not yet filed for the newest quarter
36	VANGUARD FIDUCIARY TRUST CO 13F CIK 933478 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	66,713	0.43%	+2,543	Jun 30, 2026	carried, not yet filed for the newest quarter
37	SEGALL BRYANT & HAMILL, LLC 13F CIK 1006378 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	62,364	0.40%	+33,023	Jun 30, 2026	carried, not yet filed for the newest quarter
38	Mabey Mary Insider CIK 1735750 · Aug 10, 2026 SVP AND GENERAL COUNSEL, issuer-wide	60,402	0.39%	-5,000	Aug 10, 2026	SVP AND GENERAL COUNSEL, issuer-wide
39	JPMORGAN CHASE & CO 13F CIK 19617 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	56,016	0.36%	+11,372	Jun 30, 2026	carried, not yet filed for the newest quarter
40	VANGUARD RUSSELL 2000 INDEX FUND Fund S000030003 · Registered fund · May 31, 2026 VANGUARD SCOTTSDALE FUNDS, not summed	51,010	0.33%	+1,654	May 31, 2026	VANGUARD SCOTTSDALE FUNDS, not summed
41	Doglioli Carlos Insider CIK 2013841 · Mar 17, 2026 Chief Financial Officer, issuer-wide	50,449	0.33%	+18,032	Mar 17, 2026	Chief Financial Officer, issuer-wide
42	Leon Justin M Insider CIK 1933213 · Mar 25, 2026 SVP, CORPORATE DEVELOPMENT, issuer-wide	49,707	0.32%	-560	Mar 25, 2026	SVP, CORPORATE DEVELOPMENT, issuer-wide
43	RITHOLTZ WEALTH MANAGEMENT 13F CIK 1698218 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	49,119	0.32%	+31,343	Jun 30, 2026	carried, not yet filed for the newest quarter
44	SEI INVESTMENTS CO 13F CIK 350894 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	44,729	0.29%	-41,018	Jun 30, 2026	carried, not yet filed for the newest quarter
44.1	SIIT EXTENDED MARKET INDEX FUND Fund S000035814 · Registered fund · May 31, 2026 SEI INSTITUTIONAL INVESTMENTS TRUST, not summed	2,267	0.01%	0	May 31, 2026	SEI INSTITUTIONAL INVESTMENTS TRUST, not summed
44.2	SIIT SMALL CAP FUND Fund S000006772 · Registered fund · May 31, 2026 SEI INSTITUTIONAL INVESTMENTS TRUST, not summed	1,302	0.01%	-1,470	May 31, 2026	SEI INSTITUTIONAL INVESTMENTS TRUST, not summed
44.3	SIIT SMALL CAP II FUND Fund S000036633 · Registered fund · May 31, 2026 SEI INSTITUTIONAL INVESTMENTS TRUST, not summed	1,223	0.01%	-1,670	May 31, 2026	SEI INSTITUTIONAL INVESTMENTS TRUST, not summed
45	AQR CAPITAL MANAGEMENT LLC 13F CIK 1167557 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	44,179	0.29%	+33,135	Jun 30, 2026	carried, not yet filed for the newest quarter
46	GAMCO INVESTORS, INC. ET AL 13F CIK 807249 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	42,500	0.28%	-113	Jun 30, 2026	carried, not yet filed for the newest quarter
47	FRANKLIN RESOURCES INC 13F CIK 38777 · Investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	42,350	0.27%	+1,565	Jun 30, 2026	carried, not yet filed for the newest quarter
47.1	Franklin U.S. Small Cap Multifactor Index ETF Fund S000057202 · Registered fund · Jun 30, 2026 Franklin Templeton ETF Trust, not summed	315	0.00%	—	Jun 30, 2026	Franklin Templeton ETF Trust, not summed
48	Summit Trail Advisors, LLC 13F CIK 1698478 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	40,219	0.26%	+4,990	Jun 30, 2026	carried, not yet filed for the newest quarter
49	Federation des caisses Desjardins du Quebec 13F CIK 2022297 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	39,819	0.26%	+39	Jun 30, 2026	carried, not yet filed for the newest quarter
50	LENEHAN PAMELA F Insider CIK 1202481 · Jun 16, 2026 Director, issuer-wide	39,586	0.26%	+4,788	Jun 16, 2026	Director, issuer-wide

30 more nested rows are not shown here; Every filing lists them all.

Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.

Showing 1–50 of 239 holders

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Key facts CIK 879585 CUSIP 00215F107 13F (30d) 18 filings 18 filers Visit website Investor relations