Monolithic Power Systems, Inc. (MPWR)
MPWR historical returns
Based on monthly dividend-adjusted prices. See the full breakdown on what if you had invested in MPWR.
MPWR annual returns by year
Congress trading in MPWR
3 members of Congress have disclosed trading MPWR — 1 purchase and 2 sales worth an estimated $24,000. Most recent disclosure: Oct 20, 2025.
Insider activity in MPWR
MPWR's own executives and directors have made 0 open-market purchases ($0) and 25 sales ($20.7M) in the last 90 days, per SEC Form 4 filings. Most recent: Aug 24, 2026.
| Aug 24, 2026 | Chang Kuo Wei Herbert | Director | Sell | $64,078 |
| Aug 24, 2026 | Dean Robert W Ii | Interim CFO | Sell | $41,527 |
| Aug 17, 2026 | Dean Robert W Ii | Interim CFO | Sell | $8,482 |
| Aug 11, 2026 | Chang Kuo Wei Herbert | Director | Sell | $71,000 |
| Aug 5, 2026 | Dean Robert W Ii | Interim CFO | Sell | $141,148 |
About Monolithic Power Systems, Inc.
Monolithic Power Systems, Inc. provides semiconductor-based power electronics solutions in China, Taiwan, South Korea, Southeast Asia, Europe, the United States, Japan, and internationally. The company offers direct current (DC) to DC solutions to convert and control voltages within a range of electronic systems, such as cloud-based and on-premises CPU servers and workstations, AI systems, memory, storage solutions, notebooks, infotainment, power sources, home appliances, network infrastructure, and satellite communications. It also provides alternating current (AC) to DC; driver metal-oxide-semiconductor field-effect transistors; power management integrated circuits (ICs); and current limit switch and lighting control products. The company serves storage and computing, enterprise data, automotive, communications, consumer, and industrial end markets through third-party distributors and value-added resellers. Monolithic Power Systems, Inc. was incorporated in 1997 and is based in West Palm Beach, Florida.
MPWR Key Statistics
MPWR in plain English
- P/E ratio (83.3) — how many dollars you pay for each $1 of MPWR's yearly profit. That's high, so the market expects strong growth (and you're paying up for it).
- ROE (21.98%) — how efficiently the company turns shareholders' money into profit. Above ~20% is considered strong.
- Profit margin (24.50%) — of every $1 in sales, this is what's left as profit after all costs.
- Dividend yield (0.59%) — the cash payout you'd earn per year as a % of the share price, on top of any price gains.
MPWR stock: frequently asked questions
What is Monolithic Power Systems, Inc.'s stock price today?
Monolithic Power Systems, Inc. (MPWR) last traded at $1,367.43 on the NASDAQ. Over the past 52 weeks the stock has traded between $833.18 and $1,714.09.
How much would $1,000 invested in MPWR 10 years ago be worth today?
A $1,000 investment in Monolithic Power Systems, Inc. made 10 years ago would be worth about $18,387 today (dividends reinvested) — a total return of 1,739%, or 33.8% per year.
Does MPWR pay a dividend?
Yes. Monolithic Power Systems, Inc. currently pays a dividend yielding about 0.59% per year at today's share price.
What is MPWR's P/E ratio?
MPWR trades at a trailing price-to-earnings ratio of 83.3, and 39.2 times expected forward earnings. The P/E ratio tells you how many dollars investors pay for each $1 of the company's annual profit.
Do members of Congress trade MPWR stock?
Yes — 3 members of Congress have disclosed trades in MPWR under the STOCK Act, totaling 1 purchases and 2 sales worth an estimated $24,000.
What is Monolithic Power Systems, Inc.'s ticker symbol?
Monolithic Power Systems, Inc. trades under the ticker symbol MPWR on the NASDAQ.
Compare MPWR with peers
Data last refreshed from public sources. Figures may be delayed. Not investment advice.