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Disclosery

Weiss Asset Management LP: MRK position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Weiss Asset Management LP on MRK, newest first. How the timeline and the estimate are built.

Weiss Asset Management LP held 52,089 MRK 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 52,089 shares
    Change vs previous 13F +52,089 shares

    0.07% of the 13F portfolio, value $6,693,436.

    13F-HR 0001357550-26-000029 filed by Weiss Asset 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/A 0 shares
    Change vs previous 13F -28,117 shares

    13F-HR 0001357550-26-000023 filed by Weiss Asset 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.

  3. period ended2025-12-31
    13F/A 28,117 shares
    Change vs previous 13F +28,117 shares

    0.04% of the 13F portfolio, value $2,959,595.

    13F-HR 0001357550-26-000011 filed by Weiss Asset 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 0 shares
    Change vs previous 13F -447,390 shares

    13F-HR 0001357550-25-000038 filed by Weiss Asset 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.

  5. period ended2025-06-30
    13F/A 447,390 shares
    Change vs previous 13F +447,390 shares

    0.56% of the 13F portfolio, value $35,415,392.

    13F-HR 0001357550-25-000027 filed by Weiss Asset 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/A 0 shares
    Change vs previous 13F -249,608 shares

    13F-HR 0001357550-25-000020 filed by Weiss Asset 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/A 249,608 shares
    Change vs previous 13F +160,337 shares

    0.57% of the 13F portfolio, value $24,831,004.

    13F-HR 0001357550-25-000013 filed by Weiss Asset Management LP
    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/A 89,271 shares
    Change vs previous 13F not available

    0.26% of the 13F portfolio, value $10,137,615.

    13F-HR 0001357550-24-000029 filed by Weiss Asset Management LP
    Filed (acceptance time not in the bulk data set), ingested

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