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Monolithic Power (MPWR)
NASDAQ
$1,314.16-$2.12 (-0.16%)
Price as of Aug 21, 2026 7:56 PM EDT- $64.7BMarket Cap
- 57.05%1-Year Change
- SemiconductorsIndustry
Monolithic Power (MPWR)
$1,314.16-$2.12 (-0.16%)
Top Holders
Institutional
Mutual Funds
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
LOMBARD ODIER ASSET MANAGEMENT (EUROPE) LTD | 46.19% | 22.7M | +22.7M (+99.94%) | Sep 30, 2025 |
VANGUARD GROUP INC | 12.28% | 6.0M | -39,639 (-0.66%) | Dec 31, 2025 |
BLACKROCK INC. | 12.02% | 5.9M | +542,434 (+9.18%) | Jun 30, 2024 |
BLACKROCK, INC. | 11.38% | 5.6M | -482,542 (-8.63%) | Jun 30, 2026 |
BLACKROCK FUNDING, INC. /DE | 11.04% | 5.4M | -381,736 (-7.04%) | Dec 31, 2024 |
FMR LLC | 10.54% | 5.2M | +776,427 (+15.00%) | Jun 30, 2026 |
VANGUARD CAPITAL MANAGEMENT LLC | 6.36% | 3.1M | +43,307 (+1.39%) | Jun 30, 2026 |
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
VANGUARD INDEX FUNDS | 9.47% | 4.7M | +45,719 (+0.98%) | Mar 31, 2026 |
FIDELITY SELECT PORTFOLIOS | 3.80% | 1.9M | +240,097 (+12.88%) | May 31, 2026 |
INVESCO QQQ TRUST, SERIES 1 | 2.11% | 1.0M | -40,180 (-3.88%) | Mar 31, 2026 |
FIDELITY SECURITIES FUND | 1.80% | 884,498 | +23,400 (+2.65%) | Apr 30, 2026 |
FIDELITY CONCORD STREET TRUST | 1.68% | 827,028 | +22,806 (+2.76%) | May 31, 2026 |
FIDELITY MAGELLAN FUND | 1.26% | 617,954 | 0 (0.00%) | Mar 31, 2026 |
SPDR S&P 500 ETF TRUST | 1.15% | 567,446 | -14,948 (-2.63%) | Mar 31, 2026 |
Current Ownership Distribution
- Institutions902.6M (76.03%)
- Mutual Funds280.3M (23.61%)
- Insiders4.3M (0.36%)
- Other0 (0.00%)
Insider Transactions
- 0.36% (4.3M)Current InsiderOwnership (%, shares)
- 0Number of InsiderBuying (last 12 months)
- $0.00Amount of InsiderBuying (last 12 months)
- 9Number of InsiderSelling (last 12 months)
- $75.0BAmount of InsiderSelling (last 12 months)
Insider Name & Title | Type | Date
| Transaction Value | Shares | Share Price | Shares After Transactions |
|---|---|---|---|---|---|---|
CHANG KUO WEI HERBERT | Sell | Aug 11, 2026 | $71,000.00 | 50 | $1,420.00 | 565 |
DEAN ROBERT W II Interim CFO | Sell | Aug 05, 2026 | $141,148.35 | 105 | $1,344.27 | 7,132 |
Sciammas Maurice EVP, WW Sales & Marketing | Gift | Aug 04, 2026 | $0.00 | 25,000 | $0.00 | 126,644 |
Sciammas Maurice EVP, WW Sales & Marketing | Gift | Aug 04, 2026 | $0.00 | 25,000 | $0.00 | 36,062 |
Sciammas Maurice EVP, WW Sales & Marketing | Sell | Aug 03, 2026 | $40,318.20 | 30 | $1,343.94 | 1,119 |
Sciammas Maurice EVP, WW Sales & Marketing | Sell | Jul 15, 2026 | $692,493.81 | 527 | $1,314.03 | 166,117 |
Sciammas Maurice EVP, WW Sales & Marketing | Sell | Jul 15, 2026 | $361,247.08 | 274 | $1,318.42 | 165,843 |
Sciammas Maurice EVP, WW Sales & Marketing | Sell | Jul 15, 2026 | $541,487.37 | 409 | $1,323.93 | 165,434 |
Sciammas Maurice EVP, WW Sales & Marketing | Sell | Jul 15, 2026 | $616,795.20 | 464 | $1,329.30 | 164,970 |
Sciammas Maurice EVP, WW Sales & Marketing | Sell | Jul 15, 2026 | $1.0M | 776 | $1,334.59 | 164,194 |
Sciammas Maurice EVP, WW Sales & Marketing | Sell | Jul 15, 2026 | $2.0M | 1,460 | $1,339.59 | 162,734 |
Sciammas Maurice EVP, WW Sales & Marketing | Sell | Jul 15, 2026 | $2.5M | 1,864 | $1,344.16 | 160,870 |
Sciammas Maurice EVP, WW Sales & Marketing | Sell | Jul 15, 2026 | $2.0M | 1,506 | $1,348.91 | 159,364 |
Sciammas Maurice EVP, WW Sales & Marketing | Sell | Jul 15, 2026 | $7.6M | 5,640 | $1,352.95 | 153,724 |
Sciammas Maurice EVP, WW Sales & Marketing | Sell | Jul 15, 2026 | $67,968.00 | 50 | $1,359.36 | 153,674 |
Sciammas Maurice EVP, WW Sales & Marketing | Sell | Jul 15, 2026 | $328,603.20 | 240 | $1,369.18 | 153,434 |
Sciammas Maurice EVP, WW Sales & Marketing | Sell | Jul 15, 2026 | $649,221.84 | 472 | $1,375.47 | 152,962 |
Sciammas Maurice EVP, WW Sales & Marketing | Sell | Jul 15, 2026 | $576,309.14 | 418 | $1,378.73 | 152,544 |
Sciammas Maurice EVP, WW Sales & Marketing | Sell | Jul 15, 2026 | $567,485.10 | 410 | $1,384.11 | 152,134 |
Sciammas Maurice EVP, WW Sales & Marketing | Sell | Jul 15, 2026 | $69,409.50 | 50 | $1,388.19 | 152,084 |
Sciammas Maurice EVP, WW Sales & Marketing | Sell | Jul 15, 2026 | $297,382.08 | 213 | $1,396.16 | 151,871 |
Sciammas Maurice EVP, WW Sales & Marketing | Sell | Jul 15, 2026 | $163,852.65 | 117 | $1,400.45 | 151,754 |
Sciammas Maurice EVP, WW Sales & Marketing | Sell | Jul 15, 2026 | $154,628.10 | 110 | $1,405.71 | 151,644 |
Sciammas Maurice EVP, WW Sales & Marketing | Sell | Jul 01, 2026 | $40,548.30 | 30 | $1,351.61 | 1,149 |
Tseng Saria EVP & General Counsel | Sell | Apr 06, 2026 | $278,150.24 | 244 | $1,139.96 | 173,338 |
Tseng Saria EVP & General Counsel | Sell | Apr 06, 2026 | $636,297.52 | 556 | $1,144.42 | 172,782 |
Tseng Saria EVP & General Counsel | Sell | Apr 06, 2026 | $551,544.00 | 480 | $1,149.05 | 172,302 |
Tseng Saria EVP & General Counsel | Sell | Apr 06, 2026 | $649,387.20 | 560 | $1,159.62 | 171,742 |
Tseng Saria EVP & General Counsel | Sell | Apr 06, 2026 | $797,311.44 | 684 | $1,165.66 | 171,058 |
Tseng Saria EVP & General Counsel | Sell | Apr 06, 2026 | $2.4M | 2,036 | $1,170.38 | 169,022 |