1076 tracked 13F filers disclose a position in MPWR as of the latest SEC 13F filings, a combined $47.9B in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | $6.6B | 6.1M | ▲+1.8% Added · +110K sh | Q1 2026 | |
| 2 | FMR LLC | $4.8B | 4.4M | ▲+11% Added · +424K sh | Q1 2026 | |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | $3.4B | 3.1M | →First observed position No prior filed position | Q1 2026 | |
| 4 | VANGUARD PORTFOLIO MANAGEMENT LLC | $2.8B | 2.5M | →First observed position No prior filed position | Q1 2026 | |
| 5 | STATE STREET CORP | $3.2B | 2.3M | ▲+4.3% Added · +94K sh | Q2 2026 | |
| 6 | PRICE T ROWE ASSOCIATES INC /MD/ | $1.4B | 1.3M | ▼−25% Reduced · −428K sh | Q1 2026 | |
| 7 | GEODE CAPITAL MANAGEMENT, LLC | $1.6B | 1.2M | ▼−17% Reduced · −237K sh | Q2 2026 | |
| 8 | FRANKLIN RESOURCES INC | $1.0B | 929K | ▼−12% Reduced · −121K sh | Q1 2026 | |
| 9 | NORGES BANK | $658.7M | 727K | ▲+21% Added · +128K sh | Q4 2025 | |
| 10 | T. Rowe Price Investment Management, Inc. | Withheld | 722K | ▼−0.4% Reduced · −3K sh | Q1 2026 | |
| 11 | MORGAN STANLEY | $717.6M | 656K | ▲+1.1% Added · +7K sh | Q1 2026 | |
| 12 | FIRST TRUST ADVISORS LP | $646.6M | 591K | ▼−16% Reduced · −110K sh | Q1 2026 | |
| 13 | GOLDMAN SACHS GROUP INC | $621.1M | 568K | ▼−4.3% Reduced · −26K sh | Q1 2026 | |
| 14 | MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | $620.7M | 568K | ▼−0.5% Reduced · −3K sh | Q1 2026 | |
| 15 | BARCLAYS PLC | $607.7M | 556K | ▼−8.1% Reduced · −49K sh | Q1 2026 | |
| 16 | JPMORGAN CHASE & CO | $556.2M | 555K | ▲+8.3% Added · +43K sh | Q1 2026 | |
| 17 | UBS Group AG | $590.9M | 540K | ▲+23% Added · +101K sh | Q1 2026 | |
| 18 | VAN ECK ASSOCIATES CORP | Withheld | 525K | ▲+4.4% Added · +22K sh | Q1 2026 | |
| 19 | NORTHERN TRUST CORP | $534.8M | 489K | ▲+1.1% Added · +5K sh | Q1 2026 | |
| 20 | ROYAL BANK OF CANADA | $517.6M | 473K | ▲+168% Added · +297K sh | Q1 2026 | |
| 21 | Rafferty Asset Management, LLC | $634.9M | 459K | ▲+45% Added · +142K sh | Q2 2026 | |
| 22 | VOYA INVESTMENT MANAGEMENT LLC | $429.9M | 394K | ▲+16% Added · +54K sh | Q1 2026 | |
| 23 | BANK OF AMERICA CORP /DE/ | $417.8M | 382K | ▼−30% Reduced · −167K sh | Q1 2026 | |
| 24 | Legal & General Group Plc | $415.6M | 380K | ▲+6.6% Added · +23K sh | Q1 2026 | |
| 25 | BROWN ADVISORY INC | $415.4M | 380K | ▼−24% Reduced · −121K sh | Q1 2026 |
Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
Last quarter, 1 fund opened a new position in MPWR and 15 added to an existing one, while 31 reduced and 0 exited entirely — based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).
| Company | Co-held by | Combined value |
|---|---|---|
| NVIDIA CORPNVDA | 694 funds | $504.5B |
| MICROSOFT CORPMSFT | 689 funds | $343.8B |
| APPLE INCAAPL | 681 funds | $390.6B |
| AMAZON.COM INCAMZN | 680 funds | $260.0B |
| BROADCOM INCAVGO | 676 funds | $200.5B |
| ALPHABET INC-CL AGOOGL | 675 funds | $229.5B |
| META PLATFORMS INC-CLASS AMETA | 665 funds | $144.8B |
| ELI LILLY & COLLY | 665 funds | $104.5B |
| JPMORGAN CHASE & COJPM | 643 funds | $89.5B |
| ALPHABET INC-CL CGOOG | 637 funds | $152.8B |
| VISA INC-CLASS A SHARESV | 637 funds | $81.5B |
| ADVANCED MICRO DEVICESAMD | 632 funds | $54.3B |
Ranked by how many of MPWR's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Aug 24, 2026 | DEAN ROBERT W II | Interim CFO | Sell (S) | 32 | $42K |
| Aug 24, 2026 | CHANG KUO WEI HERBERT | Director | Sell (S) | 50 | $64K |
| Aug 17, 2026 | DEAN ROBERT W II | Interim CFO | Sell (S) | 6 | $8K |
| Aug 11, 2026 | CHANG KUO WEI HERBERT | Director | Sell (S) | 50 | $71K |
| Aug 5, 2026 | DEAN ROBERT W II | Interim CFO | Sell (S) | 105 | $141K |
| Aug 3, 2026 | Sciammas Maurice | EVP, WW Sales & Marketing | Sell (S) | 30 | $40K |
| Jul 15, 2026 | Sciammas Maurice | EVP, WW Sales & Marketing | Sell (S) | 527 | $692K |
| Jul 15, 2026 | Sciammas Maurice | EVP, WW Sales & Marketing | Sell (S) | 274 | $361K |
| Jul 15, 2026 | Sciammas Maurice | EVP, WW Sales & Marketing | Sell (S) | 409 | $541K |
| Jul 15, 2026 | Sciammas Maurice | EVP, WW Sales & Marketing | Sell (S) | 464 | $617K |
| Jul 15, 2026 | Sciammas Maurice | EVP, WW Sales & Marketing | Sell (S) | 776 | $1.0M |
| Jul 15, 2026 | Sciammas Maurice | EVP, WW Sales & Marketing | Sell (S) | 1K | $2.0M |
Connected entities for MPWR
This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/MPWR/capital-change-brief"
Use Arkolith's capital_change_brief for MPWR. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for MPWR. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.