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MAD RIVER INVESTORS: GBTC position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of MAD RIVER INVESTORS on GBTC, newest first. How the timeline and the estimate are built.

MAD RIVER INVESTORS held 360,139 GBTC shares at 2026-06-30 per its 13F-HR filed 2026-08-03.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 360,139 shares
    Change vs previous 13F 0 shares

    6.13% of the 13F portfolio, value $16,393,528.

    13F-HR 0001384484-26-000006 filed by MAD RIVER INVESTORS
    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 360,139 shares
    Change vs previous 13F -315 shares

    6.86% of the 13F portfolio, value $19,000,934.

    13F-HR 0001384484-26-000004 filed by MAD RIVER INVESTORS
    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 360,454 shares
    Change vs previous 13F -500 shares

    11.23% of the 13F portfolio, value $24,640,636.

    13F-HR 0001384484-26-000002 filed by MAD RIVER INVESTORS
    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 360,954 shares
    Change vs previous 13F -11,427 shares

    13.88% of the 13F portfolio, value $32,402,841.

    13F-HR 0001384484-25-000009 filed by MAD RIVER INVESTORS
    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 372,381 shares
    Change vs previous 13F -100 shares

    14.15% of the 13F portfolio, value $31,589,081.

    13F-HR 0001384484-25-000007 filed by MAD RIVER INVESTORS
    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 372,481 shares
    Change vs previous 13F -13,325 shares

    10.28% of the 13F portfolio, value $24,274,587.

    13F-HR 0001384484-25-000005 filed by MAD RIVER INVESTORS
    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 385,806 shares
    Change vs previous 13F -3,939 shares

    13.27% of the 13F portfolio, value $28,557,361.

    13F-HR 0001384484-25-000002 filed by MAD RIVER INVESTORS
    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 389,745 shares
    Change vs previous 13F not available

    10.92% of the 13F portfolio, value $19,682,123.

    13F-HR 0001384484-24-000009 filed by MAD RIVER INVESTORS
    Filed (acceptance time not in the bulk data set), ingested

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