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 COPJ 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/COPJ"
Use Arkolith to show who owns COPJ, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | CITADEL ADVISORS LLC | $878K | 23K | ▲+11% Added · +2K sh | Q1 2026 | |
| 2 | BENJAMIN EDWARDS INC | $292K | 8K | ▲New +8K sh | Q1 2026 | |
| 3 | TD Waterhouse Canada Inc. | $271K | 3K | ▲New +3K sh | Q1 2026 | |
| 4 | GROUP ONE TRADING LLC | $194K | 5K | ▲13× Added · +5K sh | Q1 2026 | |
| 5 | HM PAYSON & CO | $47K | 1K | ▲New +1K sh | Q1 2026 | |
| 6 | NewEdge Advisors, LLC | $28K | 725 | ▲New +725 sh | Q1 2026 | |
| 7 | CWM, LLC | $9K | 225 | —Held | Q1 2026 | |
| 8 | AdvisorNet Financial, Inc | $8K | 200 | ▲New +200 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.
No Form 4 insider transactions on file yet.
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 8 funds | $3.3B |
| AMAZON.COM INCAMZN | 8 funds | $3.2B |
| BROADCOM INCAVGO | 8 funds | $2.3B |
| ALPHABET INC-CL AGOOGL | 8 funds | $2.1B |
| JPMORGAN CHASE & COJPM | 8 funds | $2.1B |
| META PLATFORMS INC-CLASS AMETA | 8 funds | $1.8B |
| MICRON TECHNOLOGY INCMU | 8 funds | $1.8B |
| TAIWAN SEMICONDUCTOR-SP ADRTSM | 8 funds | $1.6B |
| BERKSHIRE HATHAWAY INC-CL BBRK/B | 8 funds | $1.4B |
| JOHNSON & JOHNSONJNJ | 8 funds | $1.2B |
| COSTCO WHOLESALE CORPCOST | 8 funds | $1.2B |
| TESLA INCTSLA | 8 funds | $1.2B |
Ranked by how many of COPJ's institutional holders also hold each name, a cross-fund conviction signal. Via the MCP server (ticker.co_held).
No filings captured for this ticker in the live stream yet.
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for COPJ. 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.