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 RSBA 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/RSBA"
Use Arkolith to show who owns RSBA, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | Wealthcare Advisory Partners LLC | $10.3M | 496K | ▲+76% Added · +215K sh | Q1 2026 | |
| 2 | Marex Group plc | $8.3M | 400K | ▲+28% Added · +88K sh | Q1 2026 | |
| 3 | MAI Capital Management | $5.4M | 258K | ▲+59% Added · +96K sh | Q1 2026 | |
| 4 | Sigma Planning Corp | $2.4M | 116K | ▲11× Added · +105K sh | Q1 2026 | |
| 5 | CITADEL ADVISORS LLC | $469K | 23K | ▲New +23K sh | Q1 2026 | |
| 6 | CWM, LLC | $399K | 19K | ▲26× Added · +18K 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 |
|---|---|---|
| ISHARES CORE S&P 500 ETFIVV | 6 funds | $4.9B |
| NVIDIA CORPNVDA | 6 funds | $4.6B |
| APPLE INCAAPL | 6 funds | $2.9B |
| AMAZON.COM INCAMZN | 6 funds | $2.4B |
| MICROSOFT CORPMSFT | 6 funds | $2.1B |
| BROADCOM INCAVGO | 6 funds | $1.8B |
| MICRON TECHNOLOGY INCMU | 6 funds | $1.7B |
| SS SPDR DOW JONES INDUS AVGDIA | 6 funds | $1.6B |
| TAIWAN SEMICONDUCTOR-SP ADRTSM | 6 funds | $1.5B |
| SS SPDR S&P 500 ETF TRUST-USSPY | 6 funds | $1.5B |
| ALPHABET INC-CL AGOOGL | 6 funds | $1.5B |
| META PLATFORMS INC-CLASS AMETA | 6 funds | $1.4B |
Ranked by how many of RSBA'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 RSBA. 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.