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 ECBK 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/ECBK"
Use Arkolith to show who owns ECBK, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | STATE STREET CORP | $1.3M | 80K | ▲+5.7% Added · +4K sh | Q1 2026 | |
| 2 | VANGUARD FIDUCIARY TRUST CO | $811K | 48K | ▲New +48K sh | Q1 2026 | |
| 3 | VANGUARD PORTFOLIO MANAGEMENT LLC | $724K | 43K | ▲New +43K sh | Q1 2026 | |
| 4 | Ameritas Investment Partners, Inc. | $13K | 786 | —Held | Q1 2026 | |
| 5 | CWM, LLC | $4K | 265 | ▼−6.0% Reduced · −17 sh | Q1 2026 | |
| 6 | Sterling Capital Management LLC | $4K | 248 | ▼−43% Reduced · −185 sh | Q1 2026 | |
| 7 | TD PRIVATE CLIENT WEALTH LLC | $619 | 37 | ▲New +37 sh | Q1 2026 | |
| 8 | NISA INVESTMENT ADVISORS, LLC | $284 | 17 | ▲New +17 sh | Q1 2026 | |
| 9 | IFP Advisors, Inc | $184 | 11 | —Held | Q1 2026 | |
| 10 | MAI Capital Management | $34 | 2 | —Held | Q1 2026 | |
| 11 | Root Financial Partners, LLC | $33 | 2 | ▲New +2 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 |
|---|---|---|---|---|---|
| Feb 9, 2026 | Sullivan Maura Ellen | Director | Buy (P) | 2K | $41K |
| Dec 17, 2025 | Sullivan Maura Ellen | Director | Grant (A) | 1K | $0 |
| Dec 9, 2025 | Sullivan Maura Ellen | Director | Buy (P) | 100 | $2K |
| Dec 9, 2025 | Sullivan Maura Ellen | Director | Buy (P) | 63 | $1K |
| Dec 9, 2025 | Sullivan Maura Ellen | Director | Buy (P) | 400 | $7K |
| Dec 8, 2025 | Sullivan Maura Ellen | Director | Buy (P) | 100 | $2K |
| Dec 8, 2025 | Sullivan Maura Ellen | Director | Buy (P) | 200 | $3K |
| Dec 8, 2025 | Sullivan Maura Ellen | Director | Buy (P) | 76 | $1K |
| Dec 8, 2025 | Sullivan Maura Ellen | Director | Buy (P) | 500 | $8K |
| Dec 8, 2025 | Sullivan Maura Ellen | Director | Buy (P) | 361 | $6K |
| Dec 8, 2025 | Sullivan Maura Ellen | Director | Buy (P) | 700 | $12K |
| Dec 8, 2025 | Sullivan Maura Ellen | Director | Buy (P) | 500 | $8K |
| Company | Co-held by | Combined value |
|---|---|---|
| APPLE INCAAPL | 9 funds | $3.3B |
| NVIDIA CORPNVDA | 9 funds | $3.1B |
| MICROSOFT CORPMSFT | 9 funds | $2.4B |
| AMAZON.COM INCAMZN | 9 funds | $1.5B |
| ALPHABET INC-CL AGOOGL | 9 funds | $1.4B |
| BROADCOM INCAVGO | 9 funds | $1.2B |
| ALPHABET INC-CL CGOOG | 9 funds | $1.1B |
| META PLATFORMS INC-CLASS AMETA | 9 funds | $892.3M |
| JPMORGAN CHASE & COJPM | 9 funds | $807.2M |
| BERKSHIRE HATHAWAY INC-CL BBRK/B | 9 funds | $670.2M |
| TESLA INCTSLA | 9 funds | $661.3M |
| ELI LILLY & COLLY | 9 funds | $619.5M |
Ranked by how many of ECBK'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 ECBK. 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.