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Impax Asset Management Group plc: MPWR position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Impax Asset Management Group plc on MPWR, newest first. How the timeline and the estimate are built.

Impax Asset Management Group plc held 63,427 MPWR shares at 2026-06-30 per its 13F-HR filed 2026-08-11.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 63,427 shares
    Change vs previous 13F -25,029 shares

    0.57% of the 13F portfolio, value $87,678,948.

    13F-HR 0001749768-26-000004 filed by Impax Asset Management Group plc
    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 88,456 shares
    Change vs previous 13F -17,782 shares

    0.67% of the 13F portfolio, value $96,713,368.

    13F-HR 0001749768-26-000002 filed by Impax Asset Management Group plc
    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 106,238 shares
    Change vs previous 13F -25,163 shares

    0.6% of the 13F portfolio, value $96,289,874.

    13F-HR 0001749768-26-000001 filed by Impax Asset Management Group plc
    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 131,401 shares
    Change vs previous 13F -42,443 shares

    0.7% of the 13F portfolio, value $119,999,900.

    13F-HR 0001749768-25-000052 filed by Impax Asset Management Group plc
    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 173,844 shares
    Change vs previous 13F -34,774 shares

    0.73% of the 13F portfolio, value $126,206,201.

    13F-HR 0001749768-25-000049 filed by Impax Asset Management Group plc
    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 208,618 shares
    Change vs previous 13F -29,292 shares

    0.72% of the 13F portfolio, value $120,138,217.

    13F-HR 0001749768-25-000042 filed by Impax Asset Management Group plc
    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 237,910 shares
    Change vs previous 13F +50,386 shares

    0.63% of the 13F portfolio, value $139,912,199.

    13F-HR 0001749768-25-000039 filed by Impax Asset Management Group plc
    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/A 187,524 shares
    Change vs previous 13F not available

    0.68% of the 13F portfolio, value $172,336,970.

    13F-HR/A 0001749768-24-000024 filed by Impax Asset Management Group plc
    Filed (acceptance time not in the bulk data set), ingested

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