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 BYSI 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/BYSI"
Use Arkolith to show who owns BYSI, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | STATE STREET CORP | $379K | 231K | —Held | Q1 2026 | |
| 2 | VANGUARD FIDUCIARY TRUST CO | $295K | 180K | ▲New +180K sh | Q1 2026 | |
| 3 | SBI Securities Co., Ltd. | $143 | 87 | —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.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Oct 17, 2025 | Decheng Capital China Life Sciences USD Fund II, L.P. | 10% Owner | Sell (S) | 46K | $80K |
| Oct 16, 2025 | Decheng Capital China Life Sciences USD Fund II, L.P. | 10% Owner | Sell (S) | 86K | $148K |
| Oct 15, 2025 | Decheng Capital Global Healthcare GP, LLC | 10% Owner | Sell (S) | 18K | $30K |
| Oct 14, 2025 | Decheng Capital Global Healthcare GP, LLC | 10% Owner | Sell (S) | 28K | $47K |
| Oct 13, 2025 | Decheng Capital Global Healthcare GP, LLC | 10% Owner | Sell (S) | 107K | $183K |
| Oct 10, 2025 | Decheng Capital Global Healthcare GP, LLC | 10% Owner | Sell (S) | 2K | $4K |
| Oct 9, 2025 | Decheng Capital Global Healthcare GP, LLC | 10% Owner | Sell (S) | 4K | $7K |
| Oct 8, 2025 | Decheng Capital Global Healthcare GP, LLC | 10% Owner | Sell (S) | 8K | $13K |
| Oct 7, 2025 | Decheng Capital Management III (Cayman), LLC | 10% Owner | Sell (S) | 2K | $4K |
| Oct 6, 2025 | Decheng Capital Management III (Cayman), LLC | 10% Owner | Sell (S) | 18K | $31K |
| Oct 3, 2025 | Decheng Capital Management III (Cayman), LLC | 10% Owner | Sell (S) | 600 | $1K |
| Oct 2, 2025 | Cui Xiangmin | 10% Owner | Sell (S) | 600 | $1K |
| Company | Co-held by | Combined value |
|---|---|---|
| NVIDIA CORPNVDA | 2 funds | $2.0B |
| MICROSOFT CORPMSFT | 2 funds | $2.0B |
| SS SPDR S&P 500 ETF TRUST-USSPY | 2 funds | $1.9B |
| APPLE INCAAPL | 2 funds | $1.9B |
| ALPHABET INC-CL AGOOGL | 2 funds | $1.4B |
| AMAZON.COM INCAMZN | 2 funds | $1.4B |
| VANGUARD S&P 500 ETFVOO | 2 funds | $1.1B |
| BROADCOM INCAVGO | 2 funds | $1.0B |
| INVESCO QQQ TRUST SERIES 1QQQ | 2 funds | $820.0M |
| ISHARES CORE S&P 500 ETFIVV | 2 funds | $762.9M |
| JPMORGAN CHASE & COJPM | 2 funds | $755.9M |
| ALPHABET INC-CL CGOOG | 2 funds | $731.2M |
Ranked by how many of BYSI's institutional holders also hold each name, a cross-fund conviction signal. Via the MCP server (ticker.co_held).
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for BYSI. 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.