Skip to content
Disclosery

HARBOR ADVISORY CORP /MA/: MRK position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of HARBOR ADVISORY CORP /MA/ on MRK, newest first. How the timeline and the estimate are built.

HARBOR ADVISORY CORP /MA/ held 23,912 MRK shares at 2026-06-30 per its 13F-HR filed 2026-08-13.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 23,912 shares
    Change vs previous 13F 0 shares

    0.82% of the 13F portfolio, value $3,072,692.

    13F-HR 0001765380-26-000383 filed by HARBOR ADVISORY CORP /MA/
    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 23,912 shares
    Change vs previous 13F -537 shares

    0.86% of the 13F portfolio, value $2,876,374.

    13F-HR 0001765380-26-000184 filed by HARBOR ADVISORY CORP /MA/
    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 24,449 shares
    Change vs previous 13F -1,851 shares

    0.78% of the 13F portfolio, value $2,573,502.

    13F-HR 0001765380-26-000072 filed by HARBOR ADVISORY CORP /MA/
    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 26,300 shares
    Change vs previous 13F -5 shares

    0.65% of the 13F portfolio, value $2,207,359.

    13F-HR 0001765380-25-000479 filed by HARBOR ADVISORY CORP /MA/
    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 26,305 shares
    Change vs previous 13F -2,231 shares

    0.66% of the 13F portfolio, value $2,082,304.

    13F-HR 0001765380-25-000360 filed by HARBOR ADVISORY CORP /MA/
    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 28,536 shares
    Change vs previous 13F 0 shares

    0.86% of the 13F portfolio, value $2,561,391.

    13F-HR 0001765380-25-000220 filed by HARBOR ADVISORY CORP /MA/
    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 28,536 shares
    Change vs previous 13F 0 shares

    0.93% of the 13F portfolio, value $2,838,761.

    13F-HR 0001100710-25-000001 filed by HARBOR ADVISORY CORP /MA/
    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 28,536 shares
    Change vs previous 13F not available

    1.06% of the 13F portfolio, value $3,240,548.

    13F-HR 0001100710-24-000004 filed by HARBOR ADVISORY CORP /MA/
    Filed (acceptance time not in the bulk data set), ingested

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