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DARK FOREST CAPITAL MANAGEMENT LP: IOSP position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of DARK FOREST CAPITAL MANAGEMENT LP on IOSP, newest first. How the timeline and the estimate are built.

DARK FOREST CAPITAL MANAGEMENT LP held 38,862 IOSP 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 38,862 shares
    Change vs previous 13F +13,219 shares

    0.2% of the 13F portfolio, value $3,162,978.

    13F-HR 0002073679-26-000088 filed by DARK FOREST CAPITAL MANAGEMENT LP
    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 25,643 shares
    Change vs previous 13F -18,881 shares

    0.17% of the 13F portfolio, value $1,872,452.

    13F-HR 0002073679-26-000055 filed by DARK FOREST CAPITAL MANAGEMENT LP
    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 44,524 shares
    Change vs previous 13F +10,726 shares

    0.16% of the 13F portfolio, value $3,407,867.

    13F-HR 0001853322-26-000001 filed by DARK FOREST CAPITAL MANAGEMENT LP
    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/A 33,798 shares
    Change vs previous 13F +4,601 shares

    0.1% of the 13F portfolio, value $2,607,854.

    13F-HR/A 0001853322-25-000011 filed by DARK FOREST CAPITAL MANAGEMENT LP
    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 29,197 shares
    Change vs previous 13F +29,197 shares

    0.1% of the 13F portfolio, value $2,455,176.

    13F-HR 0001853322-25-000007 filed by DARK FOREST CAPITAL MANAGEMENT LP
    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 0 shares
    Change vs previous 13F -2,631 shares

    13F-HR 0001853322-25-000005 filed by DARK FOREST CAPITAL MANAGEMENT LP
    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.

  7. period ended2024-12-31
    13F 2,631 shares
    Change vs previous 13F not available

    0.04% of the 13F portfolio, value $289,567.

    13F-HR 0001853322-25-000003 filed by DARK FOREST CAPITAL MANAGEMENT LP
    Filed (acceptance time not in the bulk data set), ingested

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