CONGRESS ASSET MANAGEMENT CO
Position in MPWR — Monolithic Power Systems, Inc.
CIK 897378
BOSTON, MA
Position in MPWR
as of Jun 30, 2026
· filed Jul 7, 2026
Position Value
$111,176,303
+$20,053,234 QoQ
Shares Held
80,425
-3.5% QoQ
Ownership
0.164%
of shares outstanding
% of Portfolio
0.69%
of 13F equity value
Holder Rank
#4
of 374 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority
Sole 87%
Shared 7%
None 7%
Common Shares in MPWR Over Time
Shares Held
Position Value (USD)
Position in Semiconductors
Technology · as of Jun 30, 2026CONGRESS ASSET MANAGEMENT CO holds $1,561,377,340 across 13 Semiconductors names. MPWR ranks #5 (7.1% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | NVDA |
Nvidia Corp
|
2,627,947 | $525,825,915 | |
| 2 | AVGO |
Broadcom Inc.
|
738,306 | $278,895,091 | |
| 3 | ARM |
Arm Holdings PLC /Uk
|
409,049 | $145,036,503 | |
| 4 | CRDO |
Credo Technology Group Holding Ltd
|
458,375 | $124,655,081 | |
| 5 | MPWR |
Monolithic Power Systems, Inc.
This page
|
80,425 | $111,176,303 | |
| 6 | RMBS |
Rambus Inc
|
777,993 | $103,270,790 | |
| 7 | TXN |
Texas Instruments Inc
|
265,222 | $79,054,721 | |
| 8 | POWI |
Power Integrations Inc
|
930,059 | $77,901,741 |
All Filings in MPWR
Export CSV
26 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $111,176,303 | 80,425 | Shares | Sole | 2026-07-07 | |
| 2026-03-31 | $91,123,069 | 83,343 | Shares | Sole | 2026-04-14 | |
| 2025-12-31 | $82,194,162 | 90,686 | Shares | Sole | 2026-01-09 | |
| 2025-09-30 | $99,678,613 | 108,271 | Shares | Sole | 2025-10-10 | |
| 2025-06-30 | $91,546,103 | 125,169 | Shares | Sole | 2025-07-16 | |
| 2025-03-31 | $71,140,346 | 122,660 | Shares | Sole | 2025-04-11 | |
| 2024-12-31 | $77,336,373 | 130,702 | Shares | Sole | 2025-01-30 | |
| 2024-09-30 | $133,348,031 | 144,238 | Shares | Sole | 2024-10-28 | |
| 2024-06-30 | $199,939,394 | 243,330 | Shares | Sole | 2024-08-02 | |
| 2024-03-31 | $170,136,742 | 251,154 | Shares | Sole | 2024-04-11 | |
| 2023-12-31 | $161,391,370 | 255,860 | Shares | Sole | 2024-03-04 | |
| 2023-09-30 | $119,932,890 | 259,595 | Shares | Sole | 2023-11-01 | |
| 2023-06-30 | $145,816,720 | 269,916 | Shares | Sole | 2023-07-27 | |
| 2023-03-31 | $138,459,374 | 276,620 | Shares | Sole | 2023-04-21 | |
| 2022-12-31 | $110,635,021 | 312,873 | Shares | Sole | 2023-01-18 | |
| 2022-09-30 | $115,331,531 | 317,368 | Shares | Sole | 2022-11-08 | |
| 2022-06-30 | $147,680,277 | 384,544 | Shares | Sole | 2022-08-02 | |
| 2022-03-31 | $167,183,198 | 344,225 | Shares | Sole | 2022-04-20 | |
| 2021-12-31 | $172,220,023 | 349,097 | Shares | Sole | 2022-01-28 | |
| 2021-09-30 | $181,699,746 | 374,886 | Shares | Sole | 2021-11-08 | |
| 2021-06-30 | $144,589,009 | 387,171 | Shares | Sole | 2021-08-05 | |
| 2021-03-31 | $146,083,770 | 413,589 | Shares | Sole | 2021-05-05 | |
| 2020-12-31 | $165,550,242 | 452,039 | Shares | Sole | 2021-01-26 | |
| 2020-09-30 | $137,636,904 | 492,246 | Shares | Sole | 2020-11-03 | |
| 2020-06-30 | $120,435,342 | 508,166 | Shares | Sole | 2020-07-23 | |
| 2020-03-31 | $102,251,076 | 610,600 | Shares | Sole | 2020-04-21 | |
| No filing history on record for this holder in this stock. | ||||||