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RUSH ISLAND MANAGEMENT, LP: SBAC position timeline

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

RUSH ISLAND MANAGEMENT, LP held 456,290 SBAC 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 456,290 shares
    Change vs previous 13F -522,100 shares

    5.34% of the 13F portfolio, value $80,516,933.

    13F-HR 0001214659-26-010384 filed by RUSH ISLAND 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 978,390 shares
    Change vs previous 13F -199,205 shares

    11.3% of the 13F portfolio, value $168,390,703.

    13F-HR 0001214659-26-006469 filed by RUSH ISLAND 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 1,177,595 shares
    Change vs previous 13F +234,072 shares

    14.23% of the 13F portfolio, value $227,782,201.

    13F-HR 0001214659-26-001981 filed by RUSH ISLAND 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 943,523 shares
    Change vs previous 13F +582,862 shares

    12.51% of the 13F portfolio, value $182,430,172.

    13F-HR 0001214659-25-016635 filed by RUSH ISLAND 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 360,661 shares
    Change vs previous 13F -187,322 shares

    5.51% of the 13F portfolio, value $84,697,629.

    13F-HR 0001214659-25-012229 filed by RUSH ISLAND 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 547,983 shares
    Change vs previous 13F +547,983 shares

    7.68% of the 13F portfolio, value $120,561,740.

    13F-HR 0001214659-25-007835 filed by RUSH ISLAND MANAGEMENT, LP
    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 0 shares
    Change vs previous 13F -199,009 shares

    13F-HR 0001214659-25-002846 filed by RUSH ISLAND 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.

  8. period ended2024-09-30
    13F 199,009 shares
    Change vs previous 13F not available

    3.7% of the 13F portfolio, value $47,901,466.

    13F-HR 0001214659-24-019143 filed by RUSH ISLAND MANAGEMENT, LP
    Filed (acceptance time not in the bulk data set), ingested

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