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 CPST 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/CPST"
Use Arkolith to show who owns CPST, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | Calamos Advisors LLC | $11.7M | 433K | ▲+51% Added · +146K sh | Q1 2026 | |
| 2 | Calamos Wealth Management LLC | $2.8M | 102K | ▼−18% Reduced · −23K sh | Q1 2026 | |
| 3 | Sound Income Strategies, LLC | $43K | 2K | —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 |
|---|---|---|
| NVIDIA CORPNVDA | 5 funds | $1.7B |
| APPLE INCAAPL | 5 funds | $1.5B |
| MICROSOFT CORPMSFT | 5 funds | $1.1B |
| ALPHABET INC-CL AGOOGL | 5 funds | $898.2M |
| AMAZON.COM INCAMZN | 5 funds | $875.9M |
| BROADCOM INCAVGO | 5 funds | $608.2M |
| SS SPDR S&P 500 ETF TRUST-USSPY | 5 funds | $530.7M |
| META PLATFORMS INC-CLASS AMETA | 5 funds | $489.1M |
| ISHARES CORE S&P 500 ETFIVV | 5 funds | $380.3M |
| ELI LILLY & COLLY | 5 funds | $353.0M |
| TESLA INCTSLA | 5 funds | $346.8M |
| ALPHABET INC-CL CGOOG | 5 funds | $340.8M |
Ranked by how many of CPST'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 CPST. 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.