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FACTORY MUTUAL INSURANCE CO: MPWR position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of FACTORY MUTUAL INSURANCE CO on MPWR, newest first. How the timeline and the estimate are built.

FACTORY MUTUAL INSURANCE CO held 35,457 MPWR shares at 2026-06-30 per its 13F-HR filed 2026-07-21.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 35,457 shares
    Change vs previous 13F -4,515 shares

    0.46% of the 13F portfolio, value $49,014,339.

    13F-HR 0000887818-26-000003 filed by FACTORY MUTUAL INSURANCE CO
    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 39,972 shares
    Change vs previous 13F +700 shares

    0.49% of the 13F portfolio, value $43,703,386.

    13F-HR 0000887818-26-000002 filed by FACTORY MUTUAL INSURANCE CO
    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 39,272 shares
    Change vs previous 13F -700 shares

    0.36% of the 13F portfolio, value $35,594,570.

    13F-HR 0000887818-26-000001 filed by FACTORY MUTUAL INSURANCE CO
    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 39,972 shares
    Change vs previous 13F 0 shares

    0.36% of the 13F portfolio, value $36,799,822.

    13F-HR 0000887818-25-000002 filed by FACTORY MUTUAL INSURANCE CO
    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 39,972 shares
    Change vs previous 13F 0 shares

    0.32% of the 13F portfolio, value $29,234,721.

    13F-HR 0001085146-25-004651 filed by FACTORY MUTUAL INSURANCE CO
    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 39,972 shares
    Change vs previous 13F +8,700 shares

    0.27% of the 13F portfolio, value $23,182,961.

    13F-HR 0001085146-25-002161 filed by FACTORY MUTUAL INSURANCE CO
    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 31,272 shares
    Change vs previous 13F +17,800 shares

    0.2% of the 13F portfolio, value $18,503,642.

    13F-HR 0001085146-25-000453 filed by FACTORY MUTUAL INSURANCE CO
    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 13,472 shares
    Change vs previous 13F not available

    0.13% of the 13F portfolio, value $12,454,864.

    13F-HR 0001085146-24-004830 filed by FACTORY MUTUAL INSURANCE CO
    Filed (acceptance time not in the bulk data set), ingested

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