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Ken Griffin's ATS Corporation (ATS) position

Yes: as of Q1 2026, Ken Griffin holds 81K shares of ATS worth an amount we cannot price (0.0% of the disclosed portfolio). Last quarter the position was reduced by 45.4%. First disclosed Q2 2023.
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Current value
an amount we cannot price
Shares held
81K
% 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.

ATS price vs Griffin's position

Dates
$26$26.5$27$27.5$28← Earlier —7 purchases, 3 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 Reduced −68K −45.4% 81K May 15, 2026
Q4 2025 Added +79K +113.2% 149K Feb 17, 2026
Q3 2025 Added +44K +167.6% 70K Nov 14, 2025
Q2 2025 New +26K 26K Aug 14, 2025
Q4 2024 Reduced −119K −96.0% 5K Feb 14, 2025
Q3 2024 Added +92K +296.8% 124K Nov 14, 2024
Q2 2024 Reduced −28K −46.9% 31K Aug 14, 2024
Q1 2024 Added +9K +19.0% 59K May 15, 2024
Q4 2023 New +49K 49K Feb 14, 2024
Q2 2023 New +605K 605K Aug 14, 2023
Data through Q1 2026 · filed May 15, 2026
10 grouped rows from 10 quarters

More Griffin positions

Common questions

Does Ken Griffin own ATS?

Yes. As of Q1 2026, Ken Griffin disclosed 81K shares of ATS, 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 ATS?

Ken Griffin first disclosed a ATS position in Q2 2023; 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 ATS?

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

How many shares of ATS does Ken Griffin own?

Ken Griffin disclosed 81K shares of ATS 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 ATS?

Ken Griffin began building the ATS 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.