Monolithic Power Systems Ownership | Who Owns Monolithic Power Systems?
Monolithic Power Systems Ownership Summary
Monolithic Power Systems is owned by 52.72% institutional investors, 3.73% insiders, and 43.56% retail investors. Vanguard group is the largest institutional shareholder, holding 12.60% of MPWR shares. Fidelity Select Semiconductors is the top mutual fund, with 3.35% of its assets in Monolithic Power Systems shares.
MPWR Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Monolithic Power Systems | 52.72% | 3.73% | 43.56% |
| Sector | Technology Stocks | 36.93% | 14.89% | 48.18% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Vanguard group | 6.03M | 12.60% | $5.47B |
| Blackrock funding, inc. /de | 6.07M | 12.52% | $6.64B |
| Fmr | 4.40M | 9.07% | $4.81B |
| State street | 2.19M | 4.51% | $2.40B |
| Invesco | 1.49M | 3.06% | $1.62B |
| Geode capital management | 1.43M | 2.95% | $1.56B |
| Price t rowe associates inc /md/ | 1.26M | 2.60% | $1.38B |
| Franklin resources | 928.67K | 1.91% | $1.02B |
| Norges bank | 726.71K | 1.51% | $658.66M |
| T. rowe price investment management | 721.62K | 1.49% | $788.99M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Grandeur peak global advisors | 51.49K | 13.19% | $56.30M |
| Pembroke management | 34.40K | 5.44% | $37.61M |
| Arcadia investment management corp/mi | 19.90K | 3.73% | $21.76M |
| Connective capital management | 4.11K | 3.71% | $4.49M |
| Avalon global asset management | 22.50K | 3.40% | $24.60M |
| Carderock capital management | 11.66K | 3.15% | $12.75M |
| Natixis investment managers | 63.77K | 2.92% | $37.73M |
| 4d advisors | 4.00K | 2.77% | $4.37M |
| Timessquare capital management | 138.84K | 2.58% | $151.80M |
| Zevenbergen capital investments | 81.91K | 2.58% | $89.56M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Norges bank | 726.71K | 0.07% | 726.71K |
| Fmr | 4.40M | 0.25% | 423.82K |
| Royal bank of canada | 473.37K | 0.09% | 296.79K |
| Vanguard fiduciary trust | 278.50K | 0.08% | 278.50K |
| Axa investment managers | 115.62K | 0.29% | 115.62K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Price t rowe associates inc /md/ | 1.26M | 0.16% | -428.44K |
| Capital research global investors | - | - | -256.87K |
| Coatue management | - | - | -193.43K |
| Fil | 154.64K | 0.13% | -161.45K |
| Worldquant millennium advisors | - | - | -157.40K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Norges bank | 726.71K | 0.07% | 726.71K | $658.66M |
| Vanguard fiduciary trust | 278.50K | 0.08% | 278.50K | $304.50M |
| Axa investment managers | 115.62K | 0.29% | 115.62K | $106.44M |
| Vanguard global advisers | 106.60K | 0.06% | 106.60K | $116.55M |
| Vanguard asset management | 81.84K | 0.08% | 81.84K | $89.48M |
Sold Out
| Holder | Change |
|---|---|
| Palisade asset management | -1.00 |
| Bok financial private wealth | -1.00 |
| Highmark wealth management | -1.00 |
| Legacy bridge | -1.00 |
| Horizon financial services | -1.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Mar 31, 2026 | 838 | -23.12% | 25,567,911 | -46.44% | 52 | 0.53% | 418 | -27.43% | 284 | -18.39% |
| Dec 31, 2025 | 808 | -20.00% | 31,167,891 | -55.15% | 65 | 0.31% | 411 | -21.56% | 270 | -13.46% |
| Sep 30, 2025 | 964 | 4.22% | 69,120,352 | 51.13% | 144 | 1.58% | 503 | -0.98% | 294 | -1.67% |
| Jun 30, 2025 | 928 | 5.10% | 47,163,715 | 2.50% | 98 | 1.07% | 505 | 10.75% | 302 | 0.33% |
| Mar 31, 2025 | 871 | -1.25% | 45,843,294 | -1.25% | 95 | 1.06% | 445 | -4.09% | 302 | 3.78% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Fidelity Select Semiconductors | 1.64M | 3.35% | 79.85K |
| Vanguard US Total Market Shares ETF | 1.47M | 3.07% | 6.66K |
| Vanguard Total Stock Mkt Idx Inv | 1.47M | 3.00% | 4.01K |
| Vanguard Institutional 500 Index Trust | 1.36M | 2.84% | 9.51K |
| Vanguard 500 Index Investor | 1.26M | 2.57% | 22.63K |
| Invesco QQQ Trust | 1.05M | 2.14% | 7.76K |
| Vanguard Mid Cap Index Institutional | 1.00M | 2.04% | 2.24K |
| iShares Semiconductor ETF | 794.70K | 1.62% | 7.98K |
| iShares Core S&P 500 ETF | 630.00K | 1.28% | 1.82K |
| Fidelity Blue Chip Growth | 626.96K | 1.28% | 12.70K |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Jun 01, 2026 | Sciammas Maurice | EVP, WW Sales & Marketing | Sell | $46.02K |
| May 27, 2026 | Tseng Saria | EVP & General Counsel | Sell | $12.86M |
| May 26, 2026 | DEAN ROBERT W II | Interim CFO | Sell | $36.29K |
| May 26, 2026 | Zhou Jeff | - | Sell | $816.48K |
| May 22, 2026 | Tseng Saria | EVP & General Counsel | Sell | $7.93M |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2026 Q2 | - | 69 |
| 2026 Q1 | - | 80 |
| 2025 Q4 | - | 147 |
| 2025 Q3 | - | 39 |
| 2025 Q2 | - | 4 |
MPWR Ownership FAQ
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