Impax Asset Management Group plc
Position in MPWR — Monolithic Power Systems, Inc.
CIK 1749768
LONDON, X0
Position in MPWR
as of Mar 31, 2026
· filed May 12, 2026
Position Value
$96,713,367
+$423,494 QoQ
Shares Held
88,456
-16.7% QoQ
Ownership
0.180%
of shares outstanding
% of Portfolio
0.68%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Sep 2020
23 quarters on record
Voting authority
Sole 77%
Shared 0%
None 23%
Common Shares in MPWR Over Time
Shares Held
Position Value (USD)
Position in Semiconductors
Technology · as of Mar 31, 2026Impax Asset Management Group plc holds $1,088,161,606 across 11 Semiconductors names. MPWR ranks #3 (8.9% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | NVDA |
Nvidia Corp
|
3,641,085 | $635,005,224 | |
| 2 | MRVL |
Marvell Technology, Inc.
|
2,314,196 | $229,221,113 | |
| 3 | MPWR |
Monolithic Power Systems, Inc.
This page
|
88,456 | $96,713,367 | |
| 4 | AVGO |
Broadcom Inc.
|
170,190 | $52,675,506 | |
| 5 | TSM |
Taiwan Semiconductor Manufacturing Co Ltd
|
68,746 | $23,232,710 | |
| 6 | QCOM |
Qualcomm Inc/De
|
84,167 | $10,839,026 | |
| 7 | AMD |
Advanced Micro Devices Inc
|
49,817 | $10,134,272 | |
| 8 | MU |
Micron Technology Inc
|
28,682 | $9,689,926 |
All Filings in MPWR
Export CSV
23 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $96,713,367 | 88,456 | Shares | Defined | 2026-05-12 | |
| 2025-12-31 | $96,289,873 | 106,238 | Shares | Defined | 2026-01-29 | |
| 2025-09-30 | $120,973,016 | 131,401 | Shares | Defined | 2025-11-06 | |
| 2025-06-30 | $127,146,024 | 173,844 | Shares | Defined | 2025-08-08 | |
| 2025-03-31 | $120,994,267 | 208,618 | Shares | Defined | 2025-04-29 | |
| 2024-12-31 | $140,771,347 | 237,910 | Shares | Defined | 2025-02-04 | |
| 2024-09-30 | $173,365,938 | 187,524 | Shares | Defined | 2024-11-06 | |
| 2024-06-30 | $174,348,170 | 212,185 | Shares | Defined | 2024-11-08 | |
| 2024-03-31 | $165,075,060 | 243,682 | Shares | Defined | 2024-04-30 | |
| 2023-12-31 | $190,280,464 | 301,659 | Shares | Defined | 2024-01-26 | |
| 2023-09-30 | $147,256,494 | 318,737 | Shares | Defined | 2023-11-07 | |
| 2023-06-30 | $171,632,691 | 317,703 | Shares | Defined | 2023-08-07 | |
| 2023-03-31 | $189,560,504 | 378,712 | Shares | Defined | 2023-05-10 | |
| 2022-12-31 | $162,162,009 | 458,590 | Shares | Defined | 2023-02-09 | |
| 2022-09-30 | $149,571,806 | 411,590 | Shares | Defined | 2022-11-08 | |
| 2022-06-30 | $162,029,932 | 421,909 | Shares | Defined | 2022-08-11 | |
| 2022-03-31 | $210,695,269 | 433,815 | Shares | Defined | 2022-05-16 | |
| 2021-12-31 | $268,681,331 | 544,628 | Shares | Defined | 2022-02-14 | |
| 2021-09-30 | $228,762,659 | 471,987 | Shares | Defined | 2021-11-12 | |
| 2021-06-30 | $194,512,926 | 520,854 | Shares | Defined | 2021-08-05 | |
| 2021-03-31 | $166,083,227 | 470,211 | Shares | Defined | 2021-05-14 | |
| 2020-12-31 | $113,723,936 | 310,526 | Shares | Defined | 2021-02-16 | |
| 2020-09-30 | $36,520,980 | 130,614 | Shares | Defined | 2020-11-12 | |
| No filing history on record for this holder in this stock. | ||||||