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GSA CAPITAL PARTNERS LLP: ACM position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of GSA CAPITAL PARTNERS LLP on ACM, newest first. How the timeline and the estimate are built.

GSA CAPITAL PARTNERS LLP held 9,738 ACM shares at 2026-06-30 per its 13F-HR filed 2026-08-06.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 9,738 shares
    Change vs previous 13F +1,845 shares

    0.04% of the 13F portfolio, value $680,000.

    13F-HR 0001362033-26-000006 filed by GSA CAPITAL PARTNERS LLP
    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 7,893 shares
    Change vs previous 13F -5,772 shares

    0.04% of the 13F portfolio, value $669,000.

    13F-HR 0001362033-26-000005 filed by GSA CAPITAL PARTNERS LLP
    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 13,665 shares
    Change vs previous 13F +9,178 shares

    0.11% of the 13F portfolio, value $1,303,000.

    13F-HR 0001362033-26-000001 filed by GSA CAPITAL PARTNERS LLP
    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 4,487 shares
    Change vs previous 13F -56 shares

    0.05% of the 13F portfolio, value $585,000.

    13F-HR 0001362033-25-000016 filed by GSA CAPITAL PARTNERS LLP
    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 4,543 shares
    Change vs previous 13F -8,583 shares

    0.04% of the 13F portfolio, value $513,000.

    13F-HR 0001362033-25-000007 filed by GSA CAPITAL PARTNERS LLP
    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 13,126 shares
    Change vs previous 13F +3,107 shares

    0.11% of the 13F portfolio, value $1,217,000.

    13F-HR 0001362033-25-000006 filed by GSA CAPITAL PARTNERS LLP
    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 10,019 shares
    Change vs previous 13F +7,723 shares

    0.08% of the 13F portfolio, value $1,070,000.

    13F-HR 0001362033-25-000005 filed by GSA CAPITAL PARTNERS LLP
    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 2,296 shares
    Change vs previous 13F not available

    0.02% of the 13F portfolio, value $237,000.

    13F-HR 0001362033-24-000011 filed by GSA CAPITAL PARTNERS LLP
    Filed (acceptance time not in the bulk data set), ingested

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