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Ken Griffin's ATN International, Inc. (ATNI) position

Yes: as of Q1 2026, Ken Griffin holds 39K shares of ATNI worth an amount we cannot price (0.0% of the disclosed portfolio). Last quarter the position was increased by 134.3%. First disclosed Q2 2021.
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Current value
an amount we cannot price
Shares held
39K
% of portfolio
0.0%
Quarter-end price
No quarter-end price available

Average buy price is hidden here because at least one covered purchase quarter has no usable local mean price.

ATNI price vs Griffin's position

Dates
$22.5$23$23.5$24$24.5← Earlier —10 purchases, 6 sells
Average closing price · filing quarter
Price range · filing quarter

Every quarterly change

Quarter Action Shares change Est. value change Δ Own Shares held Filing date
Q1 2026 Added +22K +134.3% 39K May 15, 2026
Q4 2025 Reduced −54K −76.6% 16K Feb 17, 2026
Q3 2025 Reduced −57K −44.9% 70K Nov 14, 2025
Q2 2025 Reduced −27K −17.5% 128K Aug 14, 2025
Q1 2025 Added +7K +4.5% 155K May 15, 2025
Q4 2024 Added +51K +52.5% 148K Feb 14, 2025
Q3 2024 Reduced −122K −55.6% 97K Nov 14, 2024
Q2 2024 Added +125K +132.5% 219K Aug 14, 2024
Q1 2024 New +94K 94K May 15, 2024
Q1 2023 Reduced −12K −18.8% 52K May 15, 2023
Q4 2022 Added +32K +100.4% 64K Feb 14, 2023
Q3 2022 Added +16K +98.3% 32K Nov 14, 2022
Q2 2022 New +16K 16K Aug 15, 2022
Q4 2021 Added +2K +35.8% 8K Feb 14, 2022
Q3 2021 Reduced −3K −32.4% 6K Nov 15, 2021
Q2 2021 New +9K 9K Aug 16, 2021
Data through Q1 2026 · filed May 15, 2026
16 grouped rows from 16 quarters

More Griffin positions

Common questions

Does Ken Griffin own ATNI?

Yes. As of Q1 2026, Ken Griffin disclosed 39K shares of ATNI, worth an amount we cannot price. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Ken Griffin buy ATNI?

Ken Griffin first disclosed a ATNI position in Q2 2021; every quarterly buy and sell since is in the table above. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

Did Ken Griffin sell ATNI?

The quarter-by-quarter table above shows each sale and reduction Ken Griffin disclosed in ATNI. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How many shares of ATNI does Ken Griffin own?

Ken Griffin disclosed 39K shares of ATNI as of Q1 2026. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

What price did Ken Griffin pay for ATNI?

Ken Griffin began building the ATNI position before our 13F history starts, so an exact average buy price cannot be estimated without understating it. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How are the estimated trade prices calculated?

13F filings disclose quarter-end holdings, not trade dates or execution prices. These estimates use each covered quarter's average market price; the add average excludes the opening position and quarters without price data. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.