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Disclosery

Shay Capital LLC: ATI position timeline

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

Shay Capital LLC held 3,250 ATI shares at 2026-06-30 per its 13F-HR filed 2026-08-14.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 3,250 shares
    Change vs previous 13F +650 shares

    0.07% of the 13F portfolio, value $640,575.

    13F-HR 0001723643-26-000007 filed by Shay Capital LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  2. period ended2026-03-31
    13F 2,600 shares
    Change vs previous 13F +600 shares

    0.05% of the 13F portfolio, value $378,196.

    13F-HR 0001723643-26-000004 filed by Shay Capital 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 2,000 shares
    Change vs previous 13F +2,000 shares

    0.04% of the 13F portfolio, value $229,520.

    13F-HR 0001723643-26-000002 filed by Shay Capital LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  4. period ended2025-06-30
    13F 0 shares
    Change vs previous 13F -76,400 shares

    13F-HR 0001723643-25-000012 filed by Shay Capital LLC
    Filed (acceptance time not in the bulk data set), ingested

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

    Exited: the 13F for this period no longer lists the position.

  5. period ended2025-03-31
    13F 76,400 shares
    Change vs previous 13F +27,400 shares

    1.16% of the 13F portfolio, value $3,975,092.

    13F-HR 0001723643-25-000007 filed by Shay Capital LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  6. period ended2024-12-31
    13F 49,000 shares
    Change vs previous 13F +49,000 shares

    0.66% of the 13F portfolio, value $2,696,960.

    13F-HR 0001723643-25-000002 filed by Shay Capital LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  7. period ended2024-09-30
    13F 0 shares
    Change vs previous 13F not available

    13F-HR 0001213900-24-098016 filed by Shay Capital LLC
    Filed (acceptance time not in the bulk data set), ingested

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

    Exited: the 13F for this period no longer lists the position.