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Disclosery

Rafferty Asset Management, LLC: MPWR position timeline

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

Rafferty Asset Management, LLC held 459,278 MPWR 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 459,278 shares
    Change vs previous 13F +141,805 shares

    1.45% of the 13F portfolio, value $634,887,536.

    13F-HR 0001999371-26-017909 filed by Rafferty Asset 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 317,473 shares
    Change vs previous 13F -78,991 shares

    1.41% of the 13F portfolio, value $347,109,105.

    13F-HR 0001999371-26-010796 filed by Rafferty Asset 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 396,464 shares
    Change vs previous 13F +17,146 shares

    1.24% of the 13F portfolio, value $359,339,111.

    13F-HR 0001999371-26-003261 filed by Rafferty Asset Management, LLC
    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 379,318 shares
    Change vs previous 13F -149,806 shares

    1.13% of the 13F portfolio, value $349,215,324.

    13F-HR 0001999371-25-017439 filed by Rafferty Asset Management, LLC
    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 529,124 shares
    Change vs previous 13F +140,269 shares

    1.28% of the 13F portfolio, value $386,990,711.

    13F-HR 0001999371-25-011302 filed by Rafferty Asset Management, LLC
    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 388,855 shares
    Change vs previous 13F -30,340 shares

    0.96% of the 13F portfolio, value $225,528,123.

    13F-HR 0001999371-25-006071 filed by Rafferty Asset Management, LLC
    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 419,195 shares
    Change vs previous 13F +28,126 shares

    0.88% of the 13F portfolio, value $248,037,682.

    13F-HR 0001999371-25-001622 filed by Rafferty Asset Management, LLC
    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 391,069 shares
    Change vs previous 13F not available

    1.24% of the 13F portfolio, value $361,543,291.

    13F-HR 0001999371-24-014625 filed by Rafferty Asset Management, LLC
    Filed (acceptance time not in the bulk data set), ingested

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