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Disclosery

SEI INVESTMENTS CO: MPWR position timeline

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

SEI INVESTMENTS CO held 147,966 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 147,966 shares
    Change vs previous 13F -7,325 shares

    0.18% of the 13F portfolio, value $204,537,827.

    13F-HR 0002048251-26-006553 filed by SEI INVESTMENTS 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 155,291 shares
    Change vs previous 13F -11,402 shares

    0.16% of the 13F portfolio, value $169,786,734.

    13F-HR 0002048251-26-003739 filed by SEI INVESTMENTS 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 166,693 shares
    Change vs previous 13F -32,993 shares

    0.15% of the 13F portfolio, value $151,085,444.

    13F-HR 0000350894-26-000005 filed by SEI INVESTMENTS 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 199,686 shares
    Change vs previous 13F +199 shares

    0.2% of the 13F portfolio, value $183,836,345.

    13F-HR 0002048251-25-002343 filed by SEI INVESTMENTS 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 199,487 shares
    Change vs previous 13F -957 shares

    0.17% of the 13F portfolio, value $145,898,241.

    13F-HR 0001041062-25-000162 filed by SEI INVESTMENTS 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/A 200,444 shares
    Change vs previous 13F +2,028 shares

    0.15% of the 13F portfolio, value $116,253,656.

    13F-HR/A 0001041062-25-000106 filed by SEI INVESTMENTS 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 198,416 shares
    Change vs previous 13F +1,300 shares

    0.15% of the 13F portfolio, value $117,402,055.

    13F-HR 0001041062-25-000019 filed by SEI INVESTMENTS 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 197,116 shares
    Change vs previous 13F not available

    0.24% of the 13F portfolio, value $182,230,954.

    13F-HR 0001041062-24-000165 filed by SEI INVESTMENTS CO
    Filed (acceptance time not in the bulk data set), ingested

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