$MPWR
Monolithic Power Systems, Inc.
XNAS•Technology•Semiconductors & Related Devices
Why is MPWR up today? It is at $1398.72 (+3.96%), and our scanner flagged it 189 times on unusual volume this month. See the catalyst behind the move, real-time alerts the moment MPWR spikes, and full due diligence on MPWR — key stats, earnings, dilution and insider activity. Free.
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Key Stats
- Price
- $1398.72
- Change today
- +3.96%
- Previous close
- $1345.45
- 52-week range
- $785.00 – $1714.09
- Market cap
- $66.12B
- P/E ratio
- 145.77
- Dividend yield
- 0.6% ($8.00)
- Institutional own.
- 99.9%
- Total held
- 100.0%
- Short interest
- 2.5M ▲ +11% vs prior · as of 2026-07-15
- Days to cover
- 2.7d
- Avg daily volume
- 697K
- Sector
- Technology
- Industry
- Semiconductors & Related Devices
- Exchange
- XNAS
- 5m
- 1.0x
- 15m
- 0.7x
- 1h
- 0.6x
- 1D
- 0.1x
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Why is $MPWR up today?
MPWR is one of today's most active names, trading on unusually heavy volume (live price and day move above). Our scanner has fired 2 unusual-volume and momentum alerts on MPWR today, peaking at 9.2x its normal volume. Fresh from the SEC: MONOLITHIC POWER SYSTEMS, INC. filed a Quarterly report (10-Q). A material company disclosure like this is often the real catalyst behind a move of this size.
Likely catalystQuarterly report (10-Q), from the latest SEC filing. Read it →Analyst data via Nasdaq. Not investment advice.
Insiders
2 buys, 14 sells last 3 months (23/76 over 12 months)Show 12 recent transactionsMinimize 12 recent transactions
| Insider | Action | Shares | % of position | Owns after | Value | Date |
|---|---|---|---|---|---|---|
Dean Robert W Ii Officer | Acquired (grant/award) | +1K | added 23% | 7K | n/a | Jul 25, 26 |
Sciammas Maurice Officer | Sold (automatic/other) | -15K 0.03% of company | sold 9.0% | 152K | $19.7M at $1314.03 | Jul 15, 26 |
Sciammas Maurice Officer | Sold (automatic/other) | -30 | sold <0.1% | 83K | $41K at $1351.61 | Jul 1, 26 |
Sciammas Maurice Officer | Sold (automatic/other) | -30 | sold <0.1% | 83K | $46K at $1533.95 | Jun 1, 26 |
Sciammas Maurice Officer | Sold (automatic/other) | -12K 0.03% of company | sold 13% | 83K | n/a | May 29, 26 |
Tseng Saria Officer | Sold (automatic/other) | -8K 0.02% of company | sold 5.0% | 144K | $12.9M at $1700.00 | May 27, 26 |
Zhou Jeff Director | Sold (automatic/other) | -486 | sold 11% | 4K | $816K at $1680.00 | May 26, 26 |
Dean Robert W Ii Officer | Sold (automatic/other) | -22 | sold 0.4% | 6K | $36K at $1649.56 | May 26, 26 |
Tseng Saria Officer | Sold (automatic/other) | -200 | sold 0.1% | 157K | n/a | May 22, 26 |
Tseng Saria Officer | Sold (automatic/other) | -5K 0.01% of company | sold 3.2% | 152K | $7.9M at $1586.43 | May 22, 26 |
Dean Robert W Ii Officer | Sold (automatic/other) | -4 | sold <0.1% | 6K | $6K at $1563.28 | May 18, 26 |
Hsing Michael Officer | Sold (automatic/other) | -40K 0.08% of company | sold 4.5% | 848K | $58.5M at $1462.61 | May 18, 26 |
Recent Form-4 filings via Nasdaq. Open-market buys are the signal worth watching. Grants and automatic (10b5-1) sells are routine. “% of position” is the share of that insider’s own holding the trade moved. Not investment advice.
$MPWR Sentiment
BullishBlend of news sentiment, today’s move, and community votes. Not investment advice.
$MPWR Activity
News, unusual-volume alerts, AI-trader trades and community chatter — the whole story, newest first.
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MPWR stock FAQ
Why is $MPWR up today?
MPWR is one of today's most active names, trading on unusually heavy volume (live price and day move above). Our scanner has fired 2 unusual-volume and momentum alerts on MPWR today, peaking at 9.2x its normal volume. Fresh from the SEC: MONOLITHIC POWER SYSTEMS, INC. filed a Quarterly report (10-Q). A material company disclosure like this is often the real catalyst behind a move of this size.
What is the MPWR stock price today?
MPWR last traded at $1398.72, up 3.96% on the day. The price and chart above update live during market hours (4 AM to 8 PM ET).
Does MPWR pay a dividend?
Yes. MPWR currently has a dividend yield of about 0.6% ($8.00 per share per year). Dividend figures can change; this is not investment advice.
Where can I see live MPWR alerts?
The MPWR Live Alerts panel on this page streams real-time unusual volume (RVOL), momentum, halt and 200-EMA alerts from our scanner the moment they fire. Our scanner has flagged MPWR 189 times in the last 30 days.
What exchange is MPWR on?
MPWR (Monolithic Power Systems, Inc.) trades on XNAS, with a market cap of about $66.12B in the SEMICONDUCTORS & RELATED DEVICES sector.
Is MPWR good for day trading?
That depends on your strategy and risk. Day traders look for volume, volatility and a clear trend. Use the live chart, RVOL alerts and 200-EMA context on this page to judge MPWR for yourself. This is not investment advice.
Live data from TheDesperateTrader scanner. Not investment advice.