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 CSTE 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/CSTE"
Use Arkolith to show who owns CSTE, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | BRIDGEWAY CAPITAL MANAGEMENT, LLC | $71K | 66K | ▲+9.2% Added · +6K sh | Q1 2026 | |
| 2 | KESTRA PRIVATE WEALTH SERVICES, LLC | $22K | 21K | ▲+14% Added · +3K sh | Q1 2026 | |
| 3 | TD Waterhouse Canada Inc. | $2K | 2K | —Held | Q1 2026 | |
| 4 | Federation des caisses Desjardins du Quebec | $2K | 2K | —Held | Q1 2026 | |
| 5 | GROUP ONE TRADING LLC | $356 | 333 | ▲New +333 sh | Q1 2026 | |
| 6 | Advisors Asset Management, Inc. | $305 | 285 | —Held | Q1 2026 | |
| 7 | Arax Advisory Partners | $9 | 16 | ▲New +16 sh | Q1 2026 | |
| 8 | HUNTINGTON NATIONAL BANK | $1 | 1 | —Held | 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 |
|---|---|---|
| AMAZON.COM INCAMZN | 11 funds | $2.6B |
| JPMORGAN CHASE & COJPM | 11 funds | $1.6B |
| BROADCOM INCAVGO | 11 funds | $1.5B |
| VISA INC-CLASS A SHARESV | 11 funds | $1.0B |
| COSTCO WHOLESALE CORPCOST | 11 funds | $856.7M |
| BERKSHIRE HATHAWAY INC-CL BBRK/B | 11 funds | $749.6M |
| TESLA INCTSLA | 11 funds | $511.0M |
| ADVANCED MICRO DEVICESAMD | 11 funds | $451.9M |
| MASTERCARD INC - AMA | 11 funds | $438.8M |
| ORACLE CORPORCL | 11 funds | $424.0M |
| GOLDMAN SACHS GROUP INCGS | 11 funds | $390.5M |
| AMERICAN EXPRESS COAXP | 11 funds | $281.1M |
Ranked by how many of CSTE'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 CSTE. 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.