MPWRMonolithic Power Systems
Monolithic Power Systems, Inc. is a fabless global company that provides high-performance, semiconductor-based power electronics solutions. 10-K, Item 1
- Employees
- 4,501
- Headquarters
- West Palm Beach, FL
- CEO
- Michael Hsing
- Next results
- around Feb 4, 2027
Who owns MPWR
98% of the shares are held by institutions that file 13Fs; the rest by everyone else.
13F filings are quarterly and up to 45 days old. Insider trades: Form 4 rows coded P (bought) and S (sold) at a price, not grants or plan exercises.
Institutional ownership 13F data can be up to 45 days old
Every 13F-HR filed for the quarter ending Jun 30, 2026, from SEC's Form 13F data sets. A 13F lists the long positions of managers with more than $100M in US stocks. Two managers can report the same shares, so totals can count some shares twice.
| Holder | Shares | Value | % of company | From Mar 31, 2026 |
|---|---|---|---|---|
| BlackRock, Inc. | 5.59M | $7.7B | 11.46% | Reduced -7.9% |
| FMR LLC | 5.18M | $7.2B | 10.62% | Added +17.6% |
| VANGUARD CAPITAL MANAGEMENT LLC | 3.13M | $4.3B | 6.41% | Added +1.4% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 2.50M | $3.5B | 5.14% | Held |
| Invesco Ltd. | 2.34M | $3.2B | 4.81% | Reduced -6.8% |
| STATE STREET CORP | 2.28M | $3.2B | 4.68% | Added +4.3% |
| GEODE CAPITAL MANAGEMENT, LLC | 1.20M | $1.6B | 2.45% | Reduced -16.5% |
| PRICE T ROWE ASSOCIATES INC /MD/ | 977K | $1.4M | 2.00% | Reduced -22.7% |
| FRANKLIN RESOURCES INC | 812K | $1.1B | 1.66% | Reduced -12.6% |
| GOLDMAN SACHS GROUP INC | 781K | $1.1B | 1.60% | Added +37.4% |
| NORGES BANK | 751K | $1.0B | 1.54% | New |
| VAN ECK ASSOCIATES CORP | 746K | $1.0B | 1.53% | Added +42.3% |
| MORGAN STANLEY | 728K | $1.0B | 1.49% | Added +10.9% |
| BANK OF AMERICA CORP /DE/ | 536K | $741.3M | 1.10% | Added +40.3% |
| ROYAL BANK OF CANADA | 487K | $673.5M | 1.00% | Added +2.9% |
| FIRST TRUST ADVISORS LP | 483K | $667.4M | 0.99% | Reduced -18.4% |
| NORTHERN TRUST CORP | 479K | $662.8M | 0.98% | Reduced -2.0% |
| BARCLAYS PLC | 474K | $655.4M | 0.97% | Reduced -14.7% |
| Rafferty Asset Management, LLC | 459K | $634.9M | 0.94% | Added +44.7% |
| UBS Group AG | 449K | $621.3M | 0.92% | Reduced -16.8% |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 442K | $611.2M | 0.91% | Reduced -22.1% |
| JPMORGAN CHASE & CO | 435K | $571.0M | 0.89% | Reduced -21.6% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 389K | $537.7M | 0.80% | Added +3.3% |
| Legal & General Group Plc | 360K | $497.6M | 0.74% | Reduced -5.3% |
| VOYA INVESTMENT MANAGEMENT LLC | 340K | $469.7M | 0.70% | Reduced -13.5% |
Bought the most shares
- FMR LLC +776K
- NORGES BANK +751K, new
- VAN ECK ASSOCIATES CORP +222K
- GOLDMAN SACHS GROUP INC +213K
- TWO SIGMA INVESTMENTS, LP +178K
- JANE STREET GROUP, LLC +174K
- BANK OF AMERICA CORP /DE/ +154K
- Rafferty Asset Management, LLC +142K
- MILLENNIUM MANAGEMENT LLC +137K, new
- JENNISON ASSOCIATES LLC +136K
Sold the most shares
- T. Rowe Price Investment Management, Inc. -722K, sold out
- BlackRock, Inc. -483K
- PRICE T ROWE ASSOCIATES INC /MD/ -286K
- GEODE CAPITAL MANAGEMENT, LLC -237K
- Anther Capital Ltd -233K, sold out
- BROWN ADVISORY INC -199K
- WELLINGTON MANAGEMENT GROUP LLP -179K
- Invesco Ltd. -172K
- MASSACHUSETTS FINANCIAL SERVICES CO /MA/ -126K
- JPMORGAN CHASE & CO -120K
Superinvestors holding MPWR 13F data can be up to 45 days old
From the latest 13F-HR of each of the investors followed on Investors. A 13F shows holdings at the end of a quarter and is filed up to 45 days later.
None of the followed investors held MPWR in their latest 13F.
13D filings: owners of more than 5% who may push for change
No Schedule 13D about MPWR in the last year.
Work on MPWR in a spreadsheet:
Excel workbook (a sheet per section, ten years by column, charts, links to the filings) ·
CSV.
For a Google Sheet that stays up to date, paste =IMPORTDATA("https://tickdelta.com/company/MPWR/export.csv") into a cell.