131 tracked 13F filers disclose a position in MUX as of the latest SEC 13F filings, a combined $566.8M 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 | STATE STREET CORP | $68.7M | 3.4M | ▲+54% Added · +1.2M sh | Q1 2026 | |
| 2 | MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $43.6M | 2.1M | ▼−3.2% Reduced · −70K sh | Q1 2026 | |
| 3 | BlackRock, Inc. | $39.8M | 1.9M | ▲+6.1% Added · +112K sh | Q1 2026 | |
| 4 | VAN ECK ASSOCIATES CORP | Withheld | 1.6M | ▼−1.8% Reduced · −28K sh | Q1 2026 | |
| 5 | Tidal Investments LLC | $27.8M | 1.4M | ▼−7.7% Reduced · −114K sh | Q1 2026 | |
| 6 | TWO SIGMA INVESTMENTS, LP | $26.6M | 1.3M | ▲+81% Added · +582K sh | Q1 2026 | |
| 7 | DIMENSIONAL FUND ADVISORS LP | $25.9M | 1.3M | ▲+16% Added · +173K sh | Q1 2026 | |
| 8 | BNP PARIBAS FINANCIAL MARKETS | $22.2M | 1.1M | ▲+8.8% Added · +88K sh | Q1 2026 | |
| 9 | UBS Group AG | $22.0M | 1.1M | ▼−22% Reduced · −311K sh | Q1 2026 | |
| 10 | MORGAN STANLEY | $17.3M | 847K | ▼−13% Reduced · −131K sh | Q1 2026 | |
| 11 | Synergy Asset Management, LLC | $14.6M | 803K | ▲+32% Added · +193K sh | Q2 2026 | |
| 12 | FMR LLC | $15.5M | 757K | ▲+28% Added · +167K sh | Q1 2026 | |
| 13 | Mawer Investment Management Ltd. | $14.4M | 707K | ▲+183% Added · +457K sh | Q1 2026 | |
| 14 | BANK OF MONTREAL /CAN/ | $14.0M | 686K | ▲+895% Added · +617K sh | Q1 2026 | |
| 15 | Amundi | $13.8M | 675K | ▼−12% Reduced · −94K sh | Q1 2026 | |
| 16 | GEODE CAPITAL MANAGEMENT, LLC | $12.3M | 603K | ▲+15% Added · +81K sh | Q1 2026 | |
| 17 | VOLORIDGE INVESTMENT MANAGEMENT, LLC | $12.1M | 592K | ▼−16% Reduced · −110K sh | Q1 2026 | |
| 18 | VANGUARD CAPITAL MANAGEMENT LLC | $11.4M | 556K | →First observed position No prior filed position | Q1 2026 | |
| 19 | ROYAL BANK OF CANADA | $10.9M | 535K | ▼−6.8% Reduced · −39K sh | Q1 2026 | |
| 20 | BANK OF AMERICA CORP /DE/ | $10.9M | 535K | ▲14× Added · +498K sh | Q1 2026 | |
| 21 | MARSHALL WACE, LLP | $9.6M | 471K | ▲+498% Added · +392K sh | Q1 2026 | |
| 22 | BRIDGEWAY CAPITAL MANAGEMENT, LLC | $9.1M | 445K | ▲+3.7% Added · +16K sh | Q1 2026 | |
| 23 | ALPS ADVISORS INC | $8.0M | 443K | ▲+4.2% Added · +18K sh | Q2 2026 | |
| 24 | JPMORGAN CHASE & CO | $7.0M | 371K | ▼−17% Reduced · −73K sh | Q1 2026 | |
| 25 | BARCLAYS PLC | $6.6M | 324K | ▲+124% Added · +179K 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, 21 funds opened a new position in MUX and 15 added to an existing one, while 9 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 |
|---|---|---|
| VISA INC-CLASS A SHARESV | 42 funds | $4.1B |
| MICROSOFT CORPMSFT | 41 funds | $16.1B |
| AMAZON.COM INCAMZN | 41 funds | $11.9B |
| AMERICAN EXPRESS COAXP | 41 funds | $1.4B |
| ALPHABET INC-CL AGOOGL | 40 funds | $11.7B |
| BROADCOM INCAVGO | 40 funds | $7.7B |
| META PLATFORMS INC-CLASS AMETA | 40 funds | $7.4B |
| ELI LILLY & COLLY | 40 funds | $4.7B |
| TESLA INCTSLA | 40 funds | $4.6B |
| PALANTIR TECHNOLOGIES INC-APLTR | 40 funds | $1.8B |
| NVIDIA CORPNVDA | 39 funds | $22.4B |
| APPLE INCAAPL | 39 funds | $18.8B |
Ranked by how many of MUX's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Jun 29, 2026 | Brissenden Richard W. | Director | Sell (S) | 3K | $59K |
| Jun 5, 2026 | Kaszas Stephen Douglas | Director | Buy (P) | 1K | $18K |
| Sep 22, 2025 | Chan Jeffrey | VP - Finance | Sell (S) | 13K | $199K |
| Sep 22, 2025 | Brissenden Richard W. | Director | Sell (S) | 6K | $96K |
| Sep 22, 2025 | Brissenden Richard W. | Director | Sell (S) | 5K | $71K |
| Sep 19, 2025 | Spears Stephan Michael | VP Corporate Development | Sell (S) | 13K | $181K |
| Sep 19, 2025 | McEwen Robert Ross | Chairman and CEO, Director, 10% Owner | Sell (S) | 50K | $718K |
| Sep 19, 2025 | Diges Carmen L | General Counsel/Corp Sec | Sell (S) | 21K | $301K |
| Aug 12, 2025 | Ball Ian J | Director | Sell (S) | 3K | $28K |
| Dec 6, 2024 | Darveau-Garneau Nicolas | Director | Buy (P) | 2K | $19K |
| Jun 21, 2024 | Diges Carmen L | General Counsel/Corp Sec | Sell (S) | 17K | $161K |
| Jun 18, 2024 | Chan Jeffrey | VP - Finance | Sell (S) | 964 | $9K |
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/MUX/capital-change-brief"
Use Arkolith's capital_change_brief for MUX. 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 MUX. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.