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Disclosery

CITADEL ADVISORS LLC: ATI position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of CITADEL ADVISORS LLC on ATI, newest first. How the timeline and the estimate are built.

CITADEL ADVISORS LLC held 497,418 ATI shares at 2026-06-30 per its 13F-HR/A filed 2026-09-02.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F/A 497,418 shares
    Change vs previous 13F +194,122 shares

    0.06% of the 13F portfolio, value $98,041,088.

    13F-HR/A 0001104659-26-104387 filed by CITADEL ADVISORS LLC
    Accepted , ingested

  2. period ended2026-03-31
    13F 303,296 shares
    Change vs previous 13F +200,594 shares

    0.03% of the 13F portfolio, value $44,117,436.

    13F-HR 0001104659-26-062477 filed by CITADEL ADVISORS LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  3. period ended2025-12-31
    13F 102,702 shares
    Change vs previous 13F -10,201 shares

    0.01% of the 13F portfolio, value $11,786,082.

    13F-HR 0001104659-26-016408 filed by CITADEL ADVISORS LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  4. period ended2025-09-30
    13F 112,903 shares
    Change vs previous 13F -479,572 shares

    0.01% of the 13F portfolio, value $9,183,530.

    13F-HR 0001104659-25-112514 filed by CITADEL ADVISORS LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  5. period ended2025-06-30
    13F 592,475 shares
    Change vs previous 13F -473,923 shares

    0.04% of the 13F portfolio, value $51,154,292.

    13F-HR 0001104659-25-078555 filed by CITADEL ADVISORS LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  6. period ended2025-03-31
    13F 1,066,398 shares
    Change vs previous 13F +675,648 shares

    0.05% of the 13F portfolio, value $55,484,688.

    13F-HR 0000950123-25-005687 filed by CITADEL ADVISORS LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  7. period ended2024-12-31
    13F 390,750 shares
    Change vs previous 13F +137,034 shares

    0.02% of the 13F portfolio, value $21,506,880.

    13F-HR 0000950123-25-002739 filed by CITADEL ADVISORS LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  8. period ended2024-09-30
    13F 253,716 shares
    Change vs previous 13F not available

    0.02% of the 13F portfolio, value $16,976,138.

    13F-HR 0000950123-24-011767 filed by CITADEL ADVISORS LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).