642 Shares in Monolithic Power Systems, Inc. $MPWR Bought by Stephens Inc. AR

Posted by Brenda Bartman on May 22nd, 2026

Stephens Inc. AR bought a new position in shares of Monolithic Power Systems, Inc. (NASDAQ:MPWR – Free Report) in the 4th quarter, according to its most recent Form 13F filing with the SEC. The fund bought 642 shares of the semiconductor company’s stock, valued at approximately $582,000.

Several other institutional investors and hedge funds have also recently bought and sold shares of MPWR. Brighton Jones LLC grew its stake in Monolithic Power Systems by 46.0% during the 4th quarter. Brighton Jones LLC now owns 635 shares of the semiconductor company’s stock worth $376,000 after purchasing an additional 200 shares in the last quarter. Empowered Funds LLC lifted its holdings in Monolithic Power Systems by 3.1% during the 1st quarter. Empowered Funds LLC now owns 5,325 shares of the semiconductor company’s stock worth $3,088,000 after buying an additional 161 shares during the last quarter. NewEdge Advisors LLC lifted its holdings in Monolithic Power Systems by 3.5% during the 2nd quarter. NewEdge Advisors LLC now owns 9,383 shares of the semiconductor company’s stock worth $6,863,000 after buying an additional 314 shares during the last quarter. Treasurer of the State of North Carolina lifted its holdings in Monolithic Power Systems by 35.2% during the 2nd quarter. Treasurer of the State of North Carolina now owns 35,789 shares of the semiconductor company’s stock worth $26,175,000 after buying an additional 9,315 shares during the last quarter. Finally, Globeflex Capital L P purchased a new stake in Monolithic Power Systems during the 2nd quarter worth about $347,000. 93.46% of the stock is owned by institutional investors and hedge funds.

Monolithic Power Systems Stock Performance

Monolithic Power Systems stock opened at $1,561.25 on Friday. Monolithic Power Systems, Inc. has a fifty-two week low of $643.36 and a fifty-two week high of $1,675.42. The company has a market capitalization of $76.70 billion, a P/E ratio of 112.56, a PEG ratio of 2.78 and a beta of 1.74. The stock has a 50-day simple moving average of $1,345.81 and a 200-day simple moving average of $1,136.27.

Monolithic Power Systems (NASDAQ:MPWR – Get Free Report) last posted its earnings results on Thursday, April 30th. The semiconductor company reported $5.10 earnings per share for the quarter, beating the consensus estimate of $4.90 by $0.20. Monolithic Power Systems had a return on equity of 19.58% and a net margin of 22.84%.The business had revenue of $804.19 million during the quarter, compared to the consensus estimate of $781.93 million. During the same period in the previous year, the business earned $4.04 EPS. The business’s quarterly revenue was up 26.1% on a year-over-year basis. As a group, analysts forecast that Monolithic Power Systems, Inc. will post 20.13 earnings per share for the current year.

Analyst Upgrades and Downgrades

A number of analysts have issued reports on the company. Needham & Company LLC lifted their price target on Monolithic Power Systems from $1,300.00 to $1,750.00 and gave the stock a “buy” rating in a report on Friday, May 1st. Stifel Nicolaus lifted their price target on Monolithic Power Systems from $1,300.00 to $1,500.00 and gave the stock a “buy” rating in a report on Thursday, April 16th. Wells Fargo & Company lifted their price target on Monolithic Power Systems from $1,650.00 to $1,860.00 and gave the stock an “overweight” rating in a report on Friday, May 1st. William Blair reaffirmed an “outperform” rating on shares of Monolithic Power Systems in a report on Thursday, March 5th. Finally, TD Cowen lifted their price target on Monolithic Power Systems from $1,550.00 to $1,850.00 and gave the stock a “buy” rating in a report on Friday, May 1st. Twelve equities research analysts have rated the stock with a Buy rating and three have assigned a Hold rating to the company. Based on data from MarketBeat.com, the company currently has a consensus rating of “Moderate Buy” and a consensus target price of $1,599.17.

Read Our Latest Report on MPWR

Insider Activity

In other Monolithic Power Systems news, Director Jeff Zhou sold 500 shares of the company’s stock in a transaction that occurred on Wednesday, May 6th. The stock was sold at an average price of $1,650.00, for a total transaction of $825,000.00. Following the completion of the sale, the director directly owned 4,286 shares of the company’s stock, valued at $7,071,900. This represents a 10.45% decrease in their position. The transaction was disclosed in a legal filing with the Securities & Exchange Commission, which is available at the SEC website. Also, EVP Deming Xiao sold 30,000 shares of the company’s stock in a transaction that occurred on Wednesday, May 6th. The shares were sold at an average price of $1,654.55, for a total value of $49,636,500.00. Following the sale, the executive vice president directly owned 205,959 shares of the company’s stock, valued at approximately $340,769,463.45. This represents a 12.71% decrease in their ownership of the stock. The disclosure for this sale is available in the SEC filing. Insiders sold 99,992 shares of company stock worth $139,220,810 over the last quarter. 3.40% of the stock is owned by insiders.

About Monolithic Power Systems

(Free Report)

Monolithic Power Systems (NASDAQ: MPWR) is a fabless semiconductor company that designs and supplies high-performance power management solutions for a broad range of electronic systems. Founded in 1997 and headquartered in Kirkland, Washington, the company focuses on analog and mixed-signal integrated circuits that convert, regulate and monitor electrical power with an emphasis on efficiency, integration and power density.

MPS’s product portfolio includes DC‑DC switching regulators, power modules, power management ICs (PMICs), LED drivers, battery-management ICs, motor drivers, and AC‑DC power solutions.