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Disclosery

Quantum Portfolio Management LLC: SHC position timeline

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

Quantum Portfolio Management LLC held 36,927 SHC 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 36,927 shares
    Change vs previous 13F -320 shares

    0.24% of the 13F portfolio, value $655,454.

    13F-HR 0001420506-26-001701 filed by Quantum Portfolio Management LLC
    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 37,247 shares
    Change vs previous 13F -1,213 shares

    0.23% of the 13F portfolio, value $534,122.

    13F-HR/A 0001172661-26-001580 filed by Quantum Portfolio 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 38,460 shares
    Change vs previous 13F not available

    0.3% of the 13F portfolio, value $678,434.

    13F-HR 0001172661-26-000672 filed by Quantum Portfolio Management LLC
    Filed (acceptance time not in the bulk data set), ingested

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