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Disclosery

Westchester Capital Management, LLC: HDRN position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Westchester Capital Management, LLC on HDRN, newest first. How the timeline and the estimate are built.

Westchester Capital Management, LLC held 0 HDRN 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 0 shares
    Change vs previous 13F -393,423 shares

    13F-HR 0001512805-26-000008 filed by Westchester Capital Management, LLC
    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 ended2026-03-31
    13F 393,423 shares
    Change vs previous 13F 0 shares

    0.2% of the 13F portfolio, value $4,189,954.

    13F-HR 0001512805-26-000005 filed by Westchester Capital Management, LLC
    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 393,423 shares
    Change vs previous 13F -395,577 shares

    0.2% of the 13F portfolio, value $4,146,678.

    13F-HR 0001512805-26-000002 filed by Westchester Capital Management, LLC
    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 789,000 shares
    Change vs previous 13F +40,000 shares

    0.43% of the 13F portfolio, value $8,316,061.

    13F-HR 0001628280-25-052144 filed by Westchester Capital Management, LLC
    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 749,000 shares
    Change vs previous 13F -250,000 shares

    0.45% of the 13F portfolio, value $7,752,150.

    13F-HR 0001277372-25-000002 filed by Westchester Capital Management, LLC
    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 999,000 shares
    Change vs previous 13F +40,000 shares

    0.59% of the 13F portfolio, value $10,109,880.

    13F-HR 0000019481-25-000003 filed by Westchester Capital Management, LLC
    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 959,000 shares
    Change vs previous 13F not available

    0.56% of the 13F portfolio, value $9,580,410.

    13F-HR 0001591068-25-000010 filed by Westchester Capital Management, LLC
    Filed (acceptance time not in the bulk data set), ingested

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