OPPENHEIMER ASSET MANAGEMENT INC.: MPWR position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of OPPENHEIMER ASSET MANAGEMENT INC. on MPWR, newest first. How the timeline and the estimate are built.

OPPENHEIMER ASSET MANAGEMENT INC. held 7,050 MPWR shares at 2026-06-30 per its 13F-HR filed 2026-08-03.

the latest 13F is the newest step

period ended2026-06-30
13F 7,050 shares
Change vs previous 13F -1,473 shares
0.05% of the 13F portfolio, value $9,745,638.
13F-HR 0000822581-26-000002 filed by OPPENHEIMER & CO INC
Filed 2026-08-03 (acceptance time not in the bulk data set), ingested 2026-10-06 09:57:27 UTC
- OPPENHEIMER & CO INC: 5,265 shares
- OPPENHEIMER ASSET MANAGEMENT INC.: 1,785 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2026-03-31
13F 8,523 shares
Change vs previous 13F -200 shares
0.05% of the 13F portfolio, value $9,318,622.
13F-HR 0000822581-26-000001 filed by OPPENHEIMER & CO INC
Filed 2026-04-24 (acceptance time not in the bulk data set), ingested 2026-10-06 09:58:43 UTC
- OPPENHEIMER & CO INC: 6,667 shares
- OPPENHEIMER ASSET MANAGEMENT INC.: 1,856 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2025-12-31
13F 8,723 shares
Change vs previous 13F -318 shares
0.05% of the 13F portfolio, value $7,906,179.
13F-HR 0001085146-26-000134 filed by OPPENHEIMER & CO INC
Filed 2026-02-02 (acceptance time not in the bulk data set), ingested 2026-10-07 03:01:36 UTC
- OPPENHEIMER & CO INC: 6,839 shares
- OPPENHEIMER ASSET MANAGEMENT INC.: 1,884 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2025-09-30
13F 9,041 shares
Change vs previous 13F -326 shares
0.05% of the 13F portfolio, value $8,323,506.
13F-HR 0000822581-25-000003 filed by OPPENHEIMER & CO INC
Filed 2025-11-06 (acceptance time not in the bulk data set), ingested 2026-10-07 03:02:25 UTC
- OPPENHEIMER & CO INC: 7,005 shares
- OPPENHEIMER ASSET MANAGEMENT INC.: 2,036 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2025-06-30
13F 9,367 shares
Change vs previous 13F -397 shares
0.04% of the 13F portfolio, value $6,850,836.
13F-HR 0001085146-25-004369 filed by OPPENHEIMER & CO INC
Filed 2025-07-31 (acceptance time not in the bulk data set), ingested 2026-10-07 18:23:11 UTC
- OPPENHEIMER & CO INC: 7,238 shares
- OPPENHEIMER ASSET MANAGEMENT INC.: 2,129 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2025-03-31
13F 9,764 shares
Change vs previous 13F +3,485 shares
0.04% of the 13F portfolio, value $5,662,925.
13F-HR 0001085146-25-002234 filed by OPPENHEIMER & CO INC
Filed 2025-04-23 (acceptance time not in the bulk data set), ingested 2026-10-07 18:25:06 UTC
- OPPENHEIMER & CO INC: 7,931 shares
- OPPENHEIMER ASSET MANAGEMENT INC.: 1,833 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2024-12-31
13F 6,279 shares
Change vs previous 13F +1,212 shares
0.02% of the 13F portfolio, value $3,715,284.
13F-HR 0001085146-25-000778 filed by OPPENHEIMER & CO INC
Filed 2025-02-05 (acceptance time not in the bulk data set), ingested 2026-10-07 18:25:55 UTC
- OPPENHEIMER & CO INC: 4,233 shares
- OPPENHEIMER ASSET MANAGEMENT INC.: 2,046 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2024-09-30
13F 5,067 shares
Change vs previous 13F not available
0.03% of the 13F portfolio, value $4,684,442.
13F-HR 0001085146-24-005360 filed by OPPENHEIMER & CO INC
Filed 2024-11-05 (acceptance time not in the bulk data set), ingested 2026-10-07 18:26:56 UTC
- OPPENHEIMER & CO INC: 2,902 shares
- OPPENHEIMER ASSET MANAGEMENT INC.: 2,165 shares
Acceptance time not in the bulk data set (spec §4.2).