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Yorktown Management & Research Co Inc: MPWR position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Yorktown Management & Research Co Inc on MPWR, newest first. How the timeline and the estimate are built.

Yorktown Management & Research Co Inc held 650 MPWR shares at 2026-06-30 per its 13F-HR filed 2026-07-23.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 650 shares
    Change vs previous 13F 0 shares

    0.55% of the 13F portfolio, value $898,534.

    13F-HR 0001193125-26-313433 filed by Yorktown Management & Research Co 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 650 shares
    Change vs previous 13F 0 shares

    0.59% of the 13F portfolio, value $710,678.

    13F-HR 0001193125-26-162911 filed by Yorktown Management & Research Co 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 650 shares
    Change vs previous 13F 0 shares

    0.47% of the 13F portfolio, value $589,134.

    13F-HR 0001193125-26-020430 filed by Yorktown Management & Research Co 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 650 shares
    Change vs previous 13F 0 shares

    0.48% of the 13F portfolio, value $598,416.

    13F-HR 0001193125-25-255399 filed by Yorktown Management & Research Co Inc
    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 650 shares
    Change vs previous 13F 0 shares

    0.45% of the 13F portfolio, value $475,397.

    13F-HR 0000950123-25-006929 filed by Yorktown Management & Research Co Inc
    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 650 shares
    Change vs previous 13F 0 shares

    0.41% of the 13F portfolio, value $376,987.

    13F-HR 0000950123-25-003639 filed by Yorktown Management & Research Co Inc
    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 650 shares
    Change vs previous 13F 0 shares

    0.37% of the 13F portfolio, value $384,605.

    13F-HR 0000950123-25-000592 filed by Yorktown Management & Research Co Inc
    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 650 shares
    Change vs previous 13F not available

    0.62% of the 13F portfolio, value $600,925.

    13F-HR 0000950123-24-009915 filed by Yorktown Management & Research Co Inc
    Filed (acceptance time not in the bulk data set), ingested

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