The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
This stock page is the Follow view. The Build view lets your agent query MCBS owners, fund changes, insider filings, and source links through REST or MCP.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/MCBS"
Use Arkolith to show who owns MCBS, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | $43.1M | 1.5M | ▲+6.3% Added · +89K sh | Q1 2026 | |
| 2 | VANGUARD GROUP INC | $28.8M | 1.1M | ▲+2.8% Added · +30K sh | Q4 2025 | |
| 3 | GEODE CAPITAL MANAGEMENT, LLC | $14.9M | 518K | ▲+16% Added · +70K sh | Q1 2026 | |
| 4 | STATE STREET CORP | $13.6M | 474K | ▲+6.5% Added · +29K sh | Q1 2026 | |
| 5 | VANGUARD FIDUCIARY TRUST CO | $3.9M | 136K | ▲New +136K sh | Q1 2026 | |
| 6 | VANGUARD PORTFOLIO MANAGEMENT LLC | $3.7M | 130K | ▲New +130K sh | Q1 2026 | |
| 7 | CITADEL ADVISORS LLC | $1.8M | 63K | ▲+144% Added · +37K sh | Q1 2026 | |
| 8 | Connor, Clark & Lunn Investment Management Ltd. | $776K | 27K | ▲+3.4% Added · +883 sh | Q1 2026 | |
| 9 | Empirical Financial Services, LLC d.b.a. Empirical Wealth Ma | $549K | 19K | ▼−6.2% Reduced · −1K sh | Q1 2026 | |
| 10 | MetLife Investment Management, LLC | $321K | 11K | ▼−1.9% Reduced · −221 sh | Q1 2026 | |
| 11 | BRIDGEWAY CAPITAL MANAGEMENT, LLC | $266K | 9K | —Held | Q1 2026 | |
| 12 | Engineers Gate Manager LP | $218K | 8K | ▲New +8K sh | Q1 2026 | |
| 13 | Police & Firemen's Retirement System of New Jersey | $155K | 5K | —Held | Q1 2026 | |
| 14 | LOS ANGELES CAPITAL MANAGEMENT LLC | $134K | 5K | ▼−90% Reduced · −43K sh | Q1 2026 | |
| 15 | Eurizon Capital SGR S.p.A. | $107K | 4K | —Held | Q1 2026 | |
| 16 | Zurcher Kantonalbank (Zurich Cantonalbank) | $65K | 2K | —Held | Q1 2026 | |
| 17 | Ameritas Investment Partners, Inc. | $52K | 2K | —Held | Q1 2026 | |
| 18 | CWM, LLC | $39K | 1K | ▼−5.5% Reduced · −78 sh | Q1 2026 | |
| 19 | FMR LLC | $20K | 694 | ▲+0.6% Added · +4 sh | Q1 2026 | |
| 20 | Sterling Capital Management LLC | $11K | 381 | ▼−28% Reduced · −147 sh | Q1 2026 | |
| 21 | GAMMA Investing LLC | $5K | 164 | ▲+19% Added · +26 sh | Q1 2026 | |
| 22 | Larson Financial Group LLC | $4K | 128 | ▲+44% Added · +39 sh | Q1 2026 | |
| 23 | Arax Advisory Partners | $2K | 68 | ▲+15% Added · +9 sh | Q1 2026 | |
| 24 | QUADRANT CAPITAL GROUP LLC | $717 | 25 | ▲New +25 sh | Q1 2026 | |
| 25 | Root Financial Partners, LLC | $659 | 23 | ▲New +23 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 |
|---|---|---|---|---|---|
| Jun 2, 2025 | Patel Ajit A. | Director | Grant (A) | 859 | $24K |
| Jun 2, 2025 | Leung Don | Director | Grant (A) | 859 | $24K |
| Jun 2, 2025 | Tan Farid | President, Director | Grant (A) | 36K | $995K |
| Jun 2, 2025 | Lu Feiying | Director | Grant (A) | 859 | $24K |
| Jun 2, 2025 | Lai Francis | Director | Grant (A) | 859 | $24K |
| Jun 2, 2025 | Rhee Frank S. | Director | Grant (A) | 859 | $24K |
| Jun 2, 2025 | Kim Howard Hwasaeng | Executive Vice President, Director | Grant (A) | 26K | $739K |
| Jun 2, 2025 | PAEK NACK Y | Chief Executive Officer, Director | Grant (A) | 36K | $995K |
| Jun 2, 2025 | Paek John | Director | Grant (A) | 286 | $8K |
| Jun 2, 2025 | Glover Frank | Director | Grant (A) | 859 | $24K |
| Jun 2, 2025 | Hungeling William J. | Director | Grant (A) | 859 | $24K |
| Jun 2, 2025 | Stewart Lucas | Chief Financial Officer | Grant (A) | 859 | $24K |
| Company | Co-held by | Combined value |
|---|---|---|
| NVIDIA CORPNVDA | 25 funds | $19.0B |
| APPLE INCAAPL | 25 funds | $14.5B |
| MICROSOFT CORPMSFT | 25 funds | $11.1B |
| AMAZON.COM INCAMZN | 25 funds | $8.1B |
| ALPHABET INC-CL AGOOGL | 25 funds | $6.7B |
| BROADCOM INCAVGO | 25 funds | $6.5B |
| ALPHABET INC-CL CGOOG | 25 funds | $5.8B |
| META PLATFORMS INC-CLASS AMETA | 25 funds | $5.1B |
| TESLA INCTSLA | 25 funds | $4.0B |
| ELI LILLY & COLLY | 25 funds | $3.2B |
| JPMORGAN CHASE & COJPM | 25 funds | $3.1B |
| JOHNSON & JOHNSONJNJ | 25 funds | $2.6B |
Ranked by how many of MCBS'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 MCBS. 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.