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 WCPB 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/WCPB"
Use Arkolith to show who owns WCPB, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | Sigma Planning Corp | $3.3M | 130K | ▲+3.1% Added · +4K 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.
| Class | 13F holders | Value held |
|---|---|---|
| ESNETFs | 17 funds | $141.4M |
| WCPBthis pageWEITZ CORE PLUS | 5 funds | $11.2M |
| WMSBWEITZ MULTISECTO | 2 funds | $1.6M |
| 664925864PEAKSHARES RMR | 1 funds | $353K |
Same issuer, multiple share classes. The consensus leaderboards count this company once across all classes; this is the per-class detail.
| Company | Co-held by | Combined value |
|---|---|---|
| NVIDIA CORPNVDA | 5 funds | $34.8B |
| APPLE INCAAPL | 5 funds | $32.7B |
| SS SPDR S&P 500 ETF TRUST-USSPY | 5 funds | $26.8B |
| MICROSOFT CORPMSFT | 5 funds | $25.8B |
| ALPHABET INC-CL AGOOGL | 5 funds | $18.4B |
| AMAZON.COM INCAMZN | 5 funds | $16.4B |
| ISHARES CORE S&P 500 ETFIVV | 5 funds | $13.4B |
| BROADCOM INCAVGO | 5 funds | $12.2B |
| META PLATFORMS INC-CLASS AMETA | 5 funds | $11.9B |
| VANGUARD S&P 500 ETFVOO | 5 funds | $11.7B |
| TESLA INCTSLA | 5 funds | $11.7B |
| ALPHABET INC-CL CGOOG | 5 funds | $10.3B |
Ranked by how many of WCPB'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 WCPB. 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.