HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND
PensionPosition in MPWR — Monolithic Power Systems, Inc.
CIK 1535845
TORONTO, A6
Position in MPWR
as of Mar 31, 2026
· filed May 14, 2026
Position Value
$148,627,812
-$35,240,003 QoQ
Shares Held
135,938
-33.0% QoQ
Ownership
0.277%
of shares outstanding
% of Portfolio
0.29%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Jun 2020
22 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 Mar 31, 2026HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND holds $6,220,998,158 across 27 Semiconductors names. MPWR ranks #7 (2.4% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | NVDA |
Nvidia Corp
|
18,873,847 | $3,291,598,916 | |
| 2 | AVGO |
Broadcom Inc.
|
3,022,127 | $935,378,527 | |
| 3 | MU |
Micron Technology Inc
|
1,135,685 | $383,679,820 | |
| 4 | ADI |
Analog Devices Inc
|
949,794 | $302,167,463 | |
| 5 | INTC |
Intel Corp
|
4,462,861 | $196,946,055 | |
| 6 | MCHP |
Microchip Technology Inc
|
2,601,121 | $168,058,427 | |
| 7 | MPWR |
Monolithic Power Systems, Inc.
This page
|
135,938 | $148,627,812 | |
| 8 | AMD |
Advanced Micro Devices Inc
|
712,839 | $145,012,837 |
All Filings in MPWR
Export CSV
22 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $148,627,812 | 135,938 | Shares | Sole | 2026-05-14 | |
| 2025-12-31 | $183,867,815 | 202,864 | Shares | Sole | 2026-02-13 | |
| 2025-09-30 | $107,619,133 | 116,896 | Shares | Sole | 2025-11-13 | |
| 2025-06-30 | $92,819,435 | 126,910 | Shares | Sole | 2025-08-13 | |
| 2025-03-31 | $330,588 | 570 | Shares | Sole | 2025-05-14 | |
| 2024-12-31 | $83,977,022 | 141,925 | Shares | Sole | 2025-02-14 | |
| 2024-09-30 | $75,782,189 | 81,971 | Shares | Sole | 2024-11-13 | |
| 2024-06-30 | $90,508,052 | 110,150 | Shares | Sole | 2024-09-20 | |
| 2024-03-31 | $46,513,689 | 68,663 | Shares | Sole | 2024-05-13 | |
| 2023-12-31 | $8,642,947 | 13,702 | Shares | Sole | 2024-03-21 | |
| 2023-09-30 | $4,359,432 | 9,436 | Shares | Sole | 2023-11-13 | |
| 2023-03-31 | $1,059,142 | 2,116 | Shares | Sole | 2023-05-12 | |
| 2022-12-31 | $24,734,665 | 69,949 | Shares | Sole | 2023-02-13 | |
| 2022-09-30 | $5,356,516 | 14,740 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $4,949,891 | 12,889 | Shares | Sole | 2022-08-11 | |
| 2022-03-31 | $1,105,893 | 2,277 | Shares | Sole | 2022-05-12 | |
| 2021-12-31 | $9,866,600 | 20,000 | Shares | Sole | 2022-02-11 | |
| 2021-06-30 | $3,011,500 | 8,064 | Shares | Sole | 2021-08-12 | |
| 2021-03-31 | $25,784 | 73 | Shares | Sole | 2021-05-13 | |
| 2020-12-31 | $4,736,818 | 12,934 | Shares | Sole | 2021-03-01 | |
| 2020-09-30 | $1,326,190 | 4,743 | Shares | Sole | 2021-03-01 | |
| 2020-06-30 | $2,498,691 | 10,543 | Shares | Sole | 2021-03-01 | |
| No filing history on record for this holder in this stock. | ||||||