Cheapest way to buy Monolithic Power Systems shares in the UK

Monolithic Power Systems Inc (MPWR) is a publicly traded semiconductors business based in the US which employs around 4,000 staff. Monolithic Power Systems is listed on the NASDAQ and traded in US dollars. Its current price of $687.08 is 7.7% up on its price a month ago ($637.77).

How to buy shares in Monolithic Power Systems

Open a brokerage account. Choose from our top broker picks or compare brokers in depth. To trade US shares you'll need to complete a W8-BEN form – typically part of the sign-up process.
Fund your account. Add money to your account via bank transfer or debit card.
Search the platform by ticker symbol. MPWR in this case.
Choose an order type. Place a market order (or limit order, if you want to try to hold out for a specific price) with your preferred number of shares or investment amount.
Submit the order. It's that simple.

The whole process can take as little as 15 minutes. You'll need a smartphone or computer, an internet connection, your passport or driving licence and a means of payment.

Our top picks for where to buy Monolithic Power Systems shares

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We analysed all popular share dealing platforms in the UK using 35 data points and combined this with our expert insight from using the apps. The platforms we've selected as best for each category offer stand-out features or a unique combination of elements for a specific aspect of investing. If we show a "Promoted for" pick, it's been chosen from among our partners and is based on factors that include special features or offers, and the commission we receive. Keep in mind that our picks may not always be the best for you – it's important to compare for yourself. More details in our full methodology.

Monolithic Power Systems stock chart

Use our graph to track the performance of MPWR stock over time.

Fees calculator for buying Monolithic Power Systems share with popular apps

Find the cheapest way to buy Monolithic Power Systems shares with our calculator. Bear in mind that both exchange rates and share prices fluctuate in real time, so the costs estimated here are just a guide (refer to platforms themselves for availability and exact pricing).

Quantity of shares

Finder Score	Account fee	Min. initial deposit	Trade cost	Link
9 Excellent	£0	$100	£518.34	Go to siteCapital at risk
9.1 Excellent	£0	£0	£519.58	Go to siteCapital at risk
9 Excellent	From £0	£0	£518.09	Go to siteCapital at risk
8.8 Great	£0	£0	£514.64	Go to siteCapital at risk
9.2 Excellent	£0	£0	£517.06	Go to siteCapital at risk
8.5 Great	£0 (0.45% for funds)	£1	£531.58	Go to siteCapital at risk

Full comparison of share dealing platforms

These providers cover a wide range of stocks, but we can't guarantee they'll all offer this stock.

All investing should be regarded as longer term. The value of your investments can go up and down, and you may get back less than you invest. Past performance is no guarantee of future results. If you’re not sure which investments are right for you, please seek out a financial adviser. Capital at risk.

Is it a good time to buy Monolithic Power Systems stock?

Review technicals and fundamentals to help you determine if now's a good time for you to invest.

Technical analysis

View Monolithic Power Systems's price performance, share price volatility, historical data and technicals.

Quick verdict
Historical data

The gauge below shows real-time ratings that are based on 26 popular indicators such as moving averages, for specific time periods. It's not a recommendation but is simply technical analysis that can form part of your research.

Finder might not agree with the analysis and we take no responsibility. We also give no representations or warranty on the accuracy or completeness of the information provided on this page.

Historical closes compared with the last close of $687.08

1 week (2025-06-01)	2.75%
1 month (2025-05-08)	7.73%
3 months (2025-03-06)	15.13%
6 months (2024-12-08)	12.70%
1 year (2024-06-06)	-8.59%
2 years (2023-06-07)	38.05%
3 years (2022-06-07)	50.05%
5 years (2020-06-07)	199.20%

Invest in Monolithic Power Systems shares

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Frequently asked questions

Dividend yield: 0.91% of stock value
Forward annual dividend yield: 0.91% of stock value
Dividend payout ratio: 34.57% of net profits

Monolithic Power Systems has recently paid out dividends equivalent to 0.91% of its share value annually.

Monolithic Power Systems has paid out, on average, around 34.57% of recent net profits as dividends. That has enabled analysts to estimate a "forward annual dividend yield" of 0.91% of the current stock value. This means that over a year, based on recent payouts (which are sadly no guarantee of future payouts), shareholders could enjoy a 0.91% return on their shares, in the form of dividend payments. In Monolithic Power Systems's case, that would currently equate to about 5.31 per share.

While Monolithic Power Systems's payout ratio might seem fairly standard, it's worth remembering that it may be investing much of the rest of its net profits in future growth.

Monolithic Power Systems's most recent dividend payout was on 14 April 2025. To be eligible for the latest dividend you would need to have been a shareholder at 30 March 2025 (the "ex-dividend date").
It's as easy to sell Monolithic Power Systems as it is to buy! Here's how to sell Monolithic Power Systems shares that you already own.
1. Open your investment app. If you've got one with desktop access, you can log in online
2. Go to your portfolio. This should be in the main menu
3. Find your shares. You may be able to search your portfolio
4. Choose how many you'd like to sell. You'll be able to review the price and see how much you'll receive
5. Sell your Monolithic Power Systems shares. Your investment platform will let you know when your shares are sold

Monolithic Power Systems financials

Revenue TTM	$2.4 billion
Operating margin TTM	26.47%
Gross profit TTM	$1.3 billion
Return on assets TTM	12%
Return on equity TTM	67.95%
Profit margin	76.59%
Book value	$68.24
Market capitalisation	$32.9 billion

TTM: trailing 12 months

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How to buy Monolithic Power Systems shares

Easy steps to invest in Monolithic Power Systems stock in the UK.

How to buy shares in Monolithic Power Systems