MPWR — MONOLITHIC POWER SYSTEMS, INC.
Price · 2024-08-26 → 2026-08-21
499 daily closes shownAnonymous view is capped at two years of history. A free account extends it to five, and Pro opens the whole archive back to 2016-01-04.
Performance
Technicals
Dividends
Measured signals that fired on MPWR
| date | signal | measured base rate |
|---|---|---|
| 2026-08-19 | Fair value gap, bearish structure | -0.45% over 21 days · t = -3.29 · n = 108,591 statistically distinguishable from its control group |
| 2026-07-31 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
| 2026-07-09 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
| 2026-07-07 | Equal lows taken out structure | -0.64% over 21 days · t = -4.75 · n = 55,661 statistically distinguishable from its control group |
| 2026-06-17 | Fair value gap, bearish structure | -0.45% over 21 days · t = -3.29 · n = 108,591 statistically distinguishable from its control group |
| 2026-05-26 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
Excess return against a matched control group, on a point-in-time universe that includes delisted companies. Most families do not survive that. How the measurement works →
Insider transactions (Form 4)
| date | insider | what | shares | price | value |
|---|---|---|---|---|---|
| 2026-08-17 | DEAN ROBERT W II Interim CFO | Open-market sale | 6 | 1,413.64 | 8.5K |
| 2026-08-11 | CHANG KUO WEI HERBERT Director | Open-market sale | 50 | 1,420.00 | 71.0K |
| 2026-08-05 | DEAN ROBERT W II Interim CFO | Open-market sale | 105 | 1,344.27 | 141.1K |
| 2026-08-04 | Sciammas Maurice EVP, WW Sales & Marketing | Gift | 25.0K | 0.00 | 0 |
| 2026-08-04 | Sciammas Maurice EVP, WW Sales & Marketing | Gift | 25.0K | 0.00 | 0 |
| 2026-08-03 | Sciammas Maurice EVP, WW Sales & Marketing | Open-market sale 10b5-1 plan | 30 | 1,343.94 | 40.3K |
| 2026-07-25 | DEAN ROBERT W II Interim CFO | Grant or award | 1.4K | 0.00 | 0 |
| 2026-07-15 | Sciammas Maurice EVP, WW Sales & Marketing | Open-market sale 10b5-1 plan | 5.6K | 1,352.95 | 7.6M |
| 2026-07-15 | Sciammas Maurice EVP, WW Sales & Marketing | Open-market sale 10b5-1 plan | 1.9K | 1,344.16 | 2.5M |
| 2026-07-15 | Sciammas Maurice EVP, WW Sales & Marketing | Open-market sale 10b5-1 plan | 1.5K | 1,348.91 | 2.0M |
Open-market purchases (code P) are the informative ones. Grants, option exercises and tax withholding are compensation mechanics, not decisions. How to read a Form 4 →
Largest institutional holders
| manager | value | shares |
|---|---|---|
| BlackRock, Inc. | 6.6B | 6.1M |
| FMR LLC | 4.8B | 4.4M |
| VANGUARD CAPITAL MANAGEMENT LLC | 3.4B | 3.1M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 2.8B | 2.5M |
| STATE STREET CORP | 2.4B | 2.2M |
| Invesco Ltd. | 1.6B | 1.5M |
| GEODE CAPITAL MANAGEMENT, LLC | 1.6B | 1.4M |
| FRANKLIN RESOURCES INC | 1.0B | 928.7K |
| MORGAN STANLEY | 717.6M | 656.4K |
| FIRST TRUST ADVISORS LP | 646.6M | 591.4K |
13F positions as of 2026-03-31, filed up to 45 days after quarter end. Long-only US equity — shorts and derivatives never appear. What 13F does and does not show →
Short selling
This is off-exchange short volume, not short interest: it is flow, not position, and 40–50% is normal because market makers short to fill your buy. Why that number misleads →
Recent headlines
- Nvidia Is the Best S&P 500 Stock of the Past 10, 15, 20 Years — but 4 Stocks Beat It Over the Past 5 Years · 2026-08-17 · benzinga
- Did Monolithic Power Systems, Inc. Insiders Breach their Fiduciary Duties to Shareholders? · 2026-08-17
- Insider Sale: Monolithic Power Systems Interim CFO Sells 105 Shares for $141,148 · 2026-08-16
- Chip Stocks Find Buyers After Earnings Shock Shakes Out AI Trade · 2026-08-07 · benzinga
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