Monolithic Power Systems, Inc.

NasdaqGS:MPWR Stock Report

Market Cap: US$39.6b

Monolithic Power Systems Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

NasdaqGS:MPWR Recent Insider Transactions by Companies or Individuals
DateValueNameEntityRoleSharesMax Price
13 Aug 25SellUS$340,000Jeff ZhouIndividual400US$850.00
12 Aug 25SellUS$166,000Jeff ZhouIndividual200US$830.00
01 Aug 25SellUS$2,250,000Theodore BlegenIndividual3,000US$750.00
01 Aug 25SellUS$31,199,220Deming XiaoIndividual39,999US$780.00
01 Jul 25SellUS$4,500,000Theodore BlegenIndividual6,000US$750.00
13 May 25SellUS$36,900Kuo Wei ChangIndividual50US$738.00
12 May 25SellUS$8,412,000Maurice SciammasIndividual12,000US$701.00
12 May 25SellUS$69,800Kuo Wei ChangIndividual100US$698.00
08 May 25SellUS$65,000Kuo Wei ChangIndividual100US$650.00
18 Feb 25SellUS$3,640,000Michael HsingIndividual5,200US$700.00
10 Feb 25SellUS$381,498Theodore BlegenIndividual532US$717.10
10 Feb 25SellUS$1,860,157Michael HsingIndividual2,594US$717.10
10 Feb 25SellUS$474,721Maurice SciammasIndividual662US$717.10
10 Feb 25SellUS$475,438Saria TsengIndividual663US$717.10
10 Feb 25SellUS$474,721Deming XiaoIndividual662US$717.10
07 Feb 25SellUS$8,374,800Michael HsingIndividual11,964US$700.00
07 Feb 25SellUS$4,913,852Maurice SciammasIndividual7,000US$704.92
24 Jan 25SellUS$2,545,200Michael HsingIndividual3,636US$700.00
09 Dec 24SellUS$1,500,000Theodore BlegenIndividual2,500US$600.00
08 Nov 24SellUS$561,620Theodore BlegenIndividual734US$765.15
08 Nov 24SellUS$662,611Maurice SciammasIndividual866US$765.14
08 Nov 24SellUS$662,611Saria TsengIndividual866US$765.14
08 Nov 24SellUS$662,611Deming XiaoIndividual866US$765.14
08 Nov 24SellUS$2,151,602Michael HsingIndividual2,812US$765.15
01 Nov 24SellUS$1,932,405Theodore BlegenIndividual2,500US$779.79
07 Oct 24SellUS$10,225,485Maurice SciammasIndividual11,000US$935.00
01 Oct 24SellUS$2,270,900Theodore BlegenIndividual2,500US$925.12
03 Sep 24SellUS$2,260,506Theodore BlegenIndividual2,500US$919.73
27 Aug 24SellUS$8,796,050Deming XiaoIndividual9,259US$950.00
22 Aug 24SellUS$9,500,000Deming XiaoIndividual10,000US$950.00

Insider Trading Volume

Insider Buying: MPWR insiders have only sold shares in the past 3 months.

Ownership Breakdown

What is the ownership structure of MPWR?
Owner TypeNumber of SharesOwnership Percentage
State or Government63,7950.128%
Individual Insiders1,598,0053.2%
Institutions48,210,90296.7%

Dilution of Shares: Shareholders have not been meaningfully diluted in the past year.

Top Shareholders

Top 25 shareholders own 67.5% of the company
OwnershipNameSharesCurrent ValueChange %Portfolio %
12.4%
The Vanguard Group, Inc.
5,939,946US$4.9b0.33%0.06%
10.9%
BlackRock, Inc.
5,228,959US$4.3b6.44%0.06%
6.63%
FMR LLC
3,173,737US$2.6b-3.18%0.14%
6.3%
T. Rowe Price Group, Inc.
3,016,610US$2.5b28.4%0.22%
4.43%
State Street Global Advisors, Inc.
2,120,034US$1.8b0.2%0.06%
2.75%
Geode Capital Management, LLC
1,318,541US$1.1b-6.22%0.07%
2.27%
Franklin Resources, Inc.
1,087,386US$898.7m-19%0.29%
2.05%
Michael Hsing
980,763US$810.6m0%no data
1.99%
Van Eck Associates Corporation
952,060US$786.8m-9%0.68%
1.8%
Brown Advisory Incorporated
864,174US$714.2m-7.37%0.94%
1.72%
UBS Asset Management AG
825,829US$682.5m26.8%0.05%
1.55%
Invesco Ltd.
741,762US$613.0m-8.69%0.16%
1.47%
Wellington Management Group LLP
703,151US$581.1m-7.71%0.09%
1.25%
Norges Bank Investment Management
598,887US$495.0m-28.2%0.04%
1.1%
Rafferty Asset Management, LLC
529,124US$437.3m36.1%1.41%
1.09%
Fidelity International Ltd
523,073US$432.3m373%0.16%
1.01%
Massachusetts Financial Services Company
485,388US$401.2m6.08%0.09%
1.01%
Northern Trust Global Investments
482,057US$398.4m-3.3%0.05%
1%
JP Morgan Asset Management
480,281US$396.9m36.7%0.04%
0.89%
Invesco Capital Management LLC
424,297US$350.7m-2.91%0.11%
0.86%
Barclays PLC Private Banking & Investment Banking Investment
409,911US$338.8m22.1%0.18%
0.8%
Bank of America Corporation, Asset Management Arm
382,161US$315.8m44.1%0.09%
0.76%
Kayne Anderson Rudnick Investment Management, LLC
363,958US$300.8m0.78%0.68%
0.73%
Legal & General Investment Management Limited
350,574US$289.7m4.11%0.06%
0.72%
Charles Schwab Investment Management, Inc.
343,961US$284.3m2.37%0.04%

Company Analysis and Financial Data Status

DataLast Updated (UTC time)
Company Analysis2025/08/18 12:24
End of Day Share Price 2025/08/15 00:00
Earnings2025/06/30
Annual Earnings2024/12/31

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

PackageDataTimeframeExample US Source *
Company Financials10 years
  • Income statement
  • Cash flow statement
  • Balance sheet
Analyst Consensus Estimates+3 years
  • Forecast financials
  • Analyst price targets
Market Prices30 years
  • Stock prices
  • Dividends, Splits and Actions
Ownership10 years
  • Top shareholders
  • Insider trading
Management10 years
  • Leadership team
  • Board of directors
Key Developments10 years
  • Company announcements

* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.

Learn about the world class team who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.

Analyst Sources

Monolithic Power Systems, Inc. is covered by 34 analysts. 15 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

AnalystInstitution
Tristan GerraBaird
Ishan MajumdarBaptista Research
Brian PiccioniBMO Capital Markets Equity Research