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Stephens Investment Management Group LLC: MPWR position timeline

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

Stephens Investment Management Group LLC held 17,103 MPWR shares at 2026-06-30 per its 13F-HR filed 2026-07-29.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 17,103 shares
    Change vs previous 13F +3,602 shares

    0.13% of the 13F portfolio, value $23,642,503.

    13F-HR 0001314440-26-000010 filed by Stephens Investment Management Group LLC
    Filed (acceptance time not in the bulk data set), ingested

    • STEPHENS INC /AR/: 703 shares
    • Stephens Investment Management Group LLC: 16,400 shares

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

  2. period ended2026-03-31
    13F 13,501 shares
    Change vs previous 13F +1,023 shares

    0.1% of the 13F portfolio, value $14,761,319.

    13F-HR 0001314440-26-000006 filed by Stephens Investment Management Group LLC
    Filed (acceptance time not in the bulk data set), ingested

    • STEPHENS INC /AR/: 676 shares
    • Stephens Investment Management Group LLC: 12,825 shares

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

  3. period ended2025-12-31
    13F 12,478 shares
    Change vs previous 13F +12,478 shares

    0.07% of the 13F portfolio, value $11,309,560.

    13F-HR 0001314440-26-000003 filed by Stephens Investment Management Group LLC
    Filed (acceptance time not in the bulk data set), ingested

    • STEPHENS INC /AR/: 642 shares
    • Stephens Investment Management Group LLC: 11,836 shares

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

  4. period ended2025-09-30
    13F 0 shares
    Change vs previous 13F -298 shares

    13F-HR 0000757657-25-000022 filed by STEPHENS INC /AR/
    Filed (acceptance time not in the bulk data set), ingested

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

    Exited: the 13F for this period no longer lists the position.

  5. period ended2025-06-30
    13F 298 shares
    Change vs previous 13F +298 shares

    <0.01% of the 13F portfolio, value $217,951.

    13F-HR 0000757657-25-000019 filed by STEPHENS INC /AR/
    Filed (acceptance time not in the bulk data set), ingested

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

  6. period ended2024-12-31
    13F 0 shares
    Change vs previous 13F -326 shares

    13F-HR 0000757657-25-000004 filed by STEPHENS INC /AR/
    Filed (acceptance time not in the bulk data set), ingested

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

    Exited: the 13F for this period no longer lists the position.

  7. period ended2024-09-30
    13F 326 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $301,387.

    13F-HR 0001314440-24-000016 filed by STEPHENS INC /AR/
    Filed (acceptance time not in the bulk data set), ingested

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