UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC
Position in MPWR — Monolithic Power Systems, Inc.
CIK 861177
NEW YORK, NY
Position in MPWR
as of Mar 31, 2026
· filed May 13, 2026
Position Value
$330,415,833
+$41,470,992 QoQ
Shares Held
302,205
-5.2% QoQ
Ownership
0.615%
of shares outstanding
% of Portfolio
0.07%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority
Sole 48%
Shared 0%
None 52%
Common Shares in MPWR Over Time
Shares Held
Position Value (USD)
Position in Semiconductors
Technology · as of Mar 31, 2026UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC holds $65,747,581,677 across 54 Semiconductors names. MPWR ranks #12 (0.5% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | NVDA |
Nvidia Corp
|
198,975,239 | $34,701,281,677 | |
| 2 | AVGO |
Broadcom Inc.
|
39,039,932 | $12,083,249,345 | |
| 3 | AMD |
Advanced Micro Devices Inc
|
19,192,764 | $3,904,383,973 | |
| 4 | MU |
Micron Technology Inc
|
9,594,813 | $3,241,511,617 | |
| 5 | INTC |
Intel Corp
|
52,771,052 | $2,328,786,517 | |
| 6 | ADI |
Analog Devices Inc
|
6,658,024 | $2,118,183,751 | |
| 7 | TXN |
Texas Instruments Inc
|
9,305,424 | $1,806,555,009 | |
| 8 | QCOM |
Qualcomm Inc/De
|
12,113,406 | $1,559,964,419 |
All Filings in MPWR
Export CSV
25 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $330,415,833 | 302,205 | Shares | Defined | 2026-05-13 | |
| 2025-12-31 | $288,944,841 | 318,797 | Shares | Defined | 2026-02-13 | |
| 2025-09-30 | $290,850,424 | 315,922 | Shares | Other | 2025-11-14 | |
| 2025-06-30 | $236,450,027 | 323,293 | Shares | Defined | 2025-08-14 | |
| 2025-03-31 | $170,566,894 | 294,091 | Shares | Defined | 2025-05-19 | |
| 2024-12-31 | $165,468,898 | 279,650 | Shares | Defined | 2025-02-14 | |
| 2024-09-30 | $214,531,144 | 232,051 | Shares | Defined | 2024-11-14 | |
| 2024-06-30 | $194,250,896 | 236,407 | Shares | Defined | 2024-08-14 | |
| 2024-03-31 | $135,124,284 | 199,469 | Shares | Defined | 2024-05-15 | |
| 2023-12-31 | $120,322,541 | 190,752 | Shares | Defined | 2024-02-14 | |
| 2023-09-30 | $85,339,254 | 184,717 | Shares | Defined | 2023-11-13 | |
| 2023-06-30 | $91,403,131 | 169,193 | Shares | Defined | 2023-08-11 | |
| 2023-03-31 | $84,687,859 | 169,193 | Shares | Defined | 2023-05-15 | |
| 2022-12-31 | $62,516,120 | 176,794 | Shares | Defined | 2023-02-14 | |
| 2022-09-30 | $67,220,272 | 184,976 | Shares | Defined | 2022-11-14 | |
| 2022-06-30 | $67,064,898 | 174,630 | Shares | Defined | 2022-08-12 | |
| 2022-03-31 | $73,586,828 | 151,513 | Shares | Defined | 2022-05-16 | |
| 2021-12-31 | $110,034,785 | 223,045 | Shares | Defined | 2022-02-14 | |
| 2021-09-30 | $125,250,999 | 258,420 | Shares | Defined | 2021-11-15 | |
| 2021-06-30 | $55,226,528 | 147,882 | Shares | Defined | 2021-08-16 | |
| 2021-03-31 | $66,188,369 | 187,391 | Shares | Defined | 2021-05-14 | |
| 2020-12-31 | $64,020,661 | 174,810 | Shares | Defined | 2021-03-01 | |
| 2020-09-30 | $30,258,832 | 108,218 | Shares | Defined | 2020-11-13 | |
| 2020-06-30 | $25,265,385 | 106,605 | Shares | Defined | 2020-08-14 | |
| 2020-03-31 | $18,975,559 | 113,314 | Shares | Defined | 2020-05-15 | |
| No filing history on record for this holder in this stock. | ||||||