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Disclosery

Polar Asset Management Partners Inc.: DHR position timeline

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

Polar Asset Management Partners Inc. held 59,800 DHR 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 59,800 shares
    Change vs previous 13F +40,300 shares

    0.21% of the 13F portfolio, value $11,390,704.

    13F-HR 0001326389-26-000062 filed by Polar Asset Management Partners Inc.
    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 19,500 shares
    Change vs previous 13F +6,400 shares

    0.09% of the 13F portfolio, value $3,697,200.

    13F-HR 0001326389-26-000039 filed by Polar Asset Management Partners Inc.
    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 13,100 shares
    Change vs previous 13F -29,800 shares

    0.06% of the 13F portfolio, value $2,998,852.

    13F-HR 0001326389-26-000033 filed by Polar Asset Management Partners Inc.
    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 42,900 shares
    Change vs previous 13F not available

    0.17% of the 13F portfolio, value $8,505,354.

    13F-HR/A 0001326389-25-000282 filed by Polar Asset Management Partners Inc.
    Filed (acceptance time not in the bulk data set), ingested

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