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.
| # | 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 | ▲New +3.1M sh | Q1 2026 | |
| 4 | VANGUARD PORTFOLIO MANAGEMENT LLC | $2.8B | 2.5M | ▲New +2.5M sh | Q1 2026 | |
| 5 | STATE STREET CORP | $2.4B | 2.2M | ▲+0.4% Added · +8K sh | Q1 2026 | |
| 6 | GEODE CAPITAL MANAGEMENT, LLC | $1.6B | 1.4M | ▲+3.6% Added · +50K sh | Q1 2026 | |
| 7 | PRICE T ROWE ASSOCIATES INC /MD/ | $1.4B | 1.3M | ▼−25% Reduced · −428K sh | Q1 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 | VOYA INVESTMENT MANAGEMENT LLC | $429.9M | 394K | ▲+16% Added · +54K sh | Q1 2026 | |
| 22 | BANK OF AMERICA CORP /DE/ | $417.8M | 382K | ▼−30% Reduced · −167K sh | Q1 2026 | |
| 23 | Legal & General Group Plc | $415.6M | 380K | ▲+6.6% Added · +23K sh | Q1 2026 | |
| 24 | BROWN ADVISORY INC | $415.4M | 380K | ▼−24% Reduced · −121K sh | Q1 2026 | |
| 25 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $411.5M | 376K | ▲+3.0% Added · +11K 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.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Jul 15, 2026 | Sciammas Maurice | EVP, WW Sales & Marketing | Sell (S) | 110 | $155K |
| Jul 15, 2026 | Sciammas Maurice | EVP, WW Sales & Marketing | Sell (S) | 117 | $164K |
| Jul 15, 2026 | Sciammas Maurice | EVP, WW Sales & Marketing | Sell (S) | 213 | $297K |
| Jul 15, 2026 | Sciammas Maurice | EVP, WW Sales & Marketing | Sell (S) | 50 | $69K |
| Jul 15, 2026 | Sciammas Maurice | EVP, WW Sales & Marketing | Sell (S) | 410 | $567K |
| Jul 15, 2026 | Sciammas Maurice | EVP, WW Sales & Marketing | Sell (S) | 418 | $576K |
| Jul 15, 2026 | Sciammas Maurice | EVP, WW Sales & Marketing | Sell (S) | 472 | $649K |
| Jul 15, 2026 | Sciammas Maurice | EVP, WW Sales & Marketing | Sell (S) | 240 | $329K |
| Jul 15, 2026 | Sciammas Maurice | EVP, WW Sales & Marketing | Sell (S) | 50 | $68K |
| Jul 15, 2026 | Sciammas Maurice | EVP, WW Sales & Marketing | Sell (S) | 6K | $7.6M |
| Jul 15, 2026 | Sciammas Maurice | EVP, WW Sales & Marketing | Sell (S) | 2K | $2.0M |
| Jul 15, 2026 | Sciammas Maurice | EVP, WW Sales & Marketing | Sell (S) | 2K | $2.5M |
| Company | Co-held by | Combined value |
|---|---|---|
| NVIDIA CORPNVDA | 357 funds | $416.2B |
| MICROSOFT CORPMSFT | 357 funds | $290.6B |
| APPLE INCAAPL | 355 funds | $318.7B |
| META PLATFORMS INC-CLASS AMETA | 354 funds | $122.7B |
| AMAZON.COM INCAMZN | 353 funds | $220.6B |
| ALPHABET INC-CL AGOOGL | 353 funds | $192.0B |
| BROADCOM INCAVGO | 353 funds | $164.0B |
| ELI LILLY & COLLY | 347 funds | $84.7B |
| VISA INC-CLASS A SHARESV | 347 funds | $64.7B |
| JPMORGAN CHASE & COJPM | 346 funds | $76.2B |
| MASTERCARD INC - AMA | 343 funds | $59.3B |
| ALPHABET INC-CL CGOOG | 341 funds | $124.1B |
Ranked by how many of MPWR's institutional holders also hold each name, a cross-fund conviction signal. Via the MCP server (ticker.co_held).
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. Every panel above is one call to the Arkolith API & MCP server.