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Disclosery

SOUTHPORT MANAGEMENT, L.L.C.: SDS position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of SOUTHPORT MANAGEMENT, L.L.C. on SDS, newest first. How the timeline and the estimate are built.

SOUTHPORT MANAGEMENT, L.L.C. held 0 SDS shares at 2025-12-31 per its 13F-HR filed 2026-02-13.

the latest 13F is the newest step

  1. period ended2025-12-31
    13F 0 shares
    Change vs previous 13F -65,000 shares

    13F-HR 0000919574-26-000960 filed by SOUTHPORT MANAGEMENT, L.L.C.
    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.

  2. period ended2025-09-30
    13F 65,000 shares
    Change vs previous 13F +5,000 shares

    3.88% of the 13F portfolio, value $939,250.

    13F-HR 0000919574-25-007032 filed by SOUTHPORT MANAGEMENT, L.L.C.
    Filed (acceptance time not in the bulk data set), ingested

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

  3. period ended2025-06-30
    13F 60,000 shares
    Change vs previous 13F 0 shares

    4.88% of the 13F portfolio, value $999,000.

    13F-HR 0000919574-25-004671 filed by SOUTHPORT MANAGEMENT, L.L.C.
    Filed (acceptance time not in the bulk data set), ingested

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

  4. period ended2025-03-31
    13F 60,000 shares
    Change vs previous 13F -10,000 shares

    5.56% of the 13F portfolio, value $1,287,600.

    13F-HR 0000919574-25-003076 filed by SOUTHPORT MANAGEMENT, L.L.C.
    Filed (acceptance time not in the bulk data set), ingested

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

  5. period ended2024-12-31
    13F 70,000 shares
    Change vs previous 13F +25,000 shares

    4.99% of the 13F portfolio, value $1,376,900.

    13F-HR 0000919574-25-001175 filed by SOUTHPORT MANAGEMENT, L.L.C.
    Filed (acceptance time not in the bulk data set), ingested

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

  6. period ended2024-09-30
    13F 45,000 shares
    Change vs previous 13F +5,000 shares

    3.45% of the 13F portfolio, value $928,350.

    13F-HR 0000919574-24-006503 filed by SOUTHPORT MANAGEMENT, L.L.C.
    Filed (acceptance time not in the bulk data set), ingested

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

  7. period ended2024-06-30
    13F 40,000 shares
    Change vs previous 13F +10,000 shares

    4.12% of the 13F portfolio, value $921,600.

    13F-HR 0000919574-24-004528 filed by SOUTHPORT MANAGEMENT, L.L.C.
    Filed (acceptance time not in the bulk data set), ingested

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

  8. period ended2024-03-31
    13F 30,000 shares
    Change vs previous 13F not available

    2.74% of the 13F portfolio, value $745,800.

    13F-HR 0000919574-24-003009 filed by SOUTHPORT MANAGEMENT, L.L.C.
    Filed (acceptance time not in the bulk data set), ingested

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