T. Rowe Price Investment Management, Inc.
Position in MPWR — Monolithic Power Systems, Inc.
CIK 1897612
BALTIMORE, MD
Position in MPWR
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$788,985,413
+$357,278,895 QoQ
Shares Held
721,622
+51.5% QoQ
Ownership
1.47%
of shares outstanding
% of Portfolio
0.55%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Sep 2022
7 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in MPWR Over Time
Shares Held
Position Value (USD)
Position in Semiconductors
Technology · as of Jun 30, 2026T. Rowe Price Investment Management, Inc. holds $15,075,416,540 across 28 Semiconductors names.
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | NVDA |
Nvidia Corp
|
16,865,766 | $3,374,671,118 | |
| 2 | AVGO |
Broadcom Inc.
|
7,824,516 | $2,955,710,919 | |
| 3 | AMD |
Advanced Micro Devices Inc
|
3,836,091 | $2,228,423,622 | |
| 4 | MU |
Micron Technology Inc
|
1,103,546 | $1,273,812,112 | |
| 5 | LSCC |
Lattice Semiconductor Corp
|
7,790,567 | $1,191,645,128 | |
| 6 | MTSI |
MACOM Technology Solutions Holdings, Inc.
|
2,850,185 | $1,084,124,868 | |
| 7 | SITM |
SITIME Corp
|
650,575 | $485,042,697 | |
| 8 | MCHP |
Microchip Technology Inc
|
5,213,700 | $475,489,440 |
All Filings in MPWR
Export CSV
7 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $788,985,413 | 721,622 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $431,706,518 | 476,308 | Shares | Sole | 2026-02-17 | |
| 2025-09-30 | $691,113,400 | 750,688 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $678,578,752 | 927,806 | Shares | Sole | 2025-08-14 | |
| 2025-03-31 | $182,374,131 | 314,449 | Shares | Sole | 2025-05-14 | |
| 2024-12-31 | $108,905,343 | 184,055 | Shares | Sole | 2025-02-14 | |
| 2022-09-30 | $8,868,413 | 24,404 | Shares | Sole | 2022-11-14 | |
| No filing history on record for this holder in this stock. | ||||||