Institutional HoldersBeta
Who holds a company, from every 13F filed for the quarter, one row per filer exactly as filed, against the latest share count the company reported.
Share classes (cover page of the 10-Q filed 2026-08-14, as of 2026-07-31)
| Class | Listed | Shares outstanding | Held by 13F filers | % of class | Holders | CUSIP |
|---|---|---|---|---|---|---|
| Common stock | BYSI · NASDAQ | 41,119,820 | 6,060,661 | 14.7% | 22 | G10830100 |
Each class is compared with its own share count; classes are not added together. A class that is not exchange-listed cannot be held by 13F filers.
Top holders (22 of 22 · G10830100)
change vs 2026-03-31| # | Filer | Shares | % of class | Value | Change |
|---|---|---|---|---|---|
| 1 | Decheng Capital LLC | 3,800,702 | 9.24% | $6.7M | — |
| 2 | BlackRock, Inc. | 672,915 | 1.64% | $1.2M | +23,453 (+3.6%) |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | 626,457 | 1.52% | $1.1M | +18,523 (+3.0%) |
| 4 | GEODE CAPITAL MANAGEMENT, LLC | 367,740 | 0.89% | $644K | -7,631 (-2.0%) |
| 5 | STATE STREET CORP | 231,120 | 0.56% | $404K | — |
| 6 | VANGUARD FIDUCIARY TRUST CO | 181,196 | 0.44% | $317K | +1,271 (+0.7%) |
| 7 | UBS Group AG | 63,032 | 0.15% | $110K | +61,862 (+5287.4%) |
| 8 | NORTHERN TRUST CORP | 62,024 | 0.15% | $109K | -7,244 (-10.5%) |
| 9 | Meridian Wealth Management, LLC | 15,000 | 0.04% | $26K | — |
| 10 | Farther Finance Advisors, LLC | 12,773 | 0.03% | $22K | NEW |
| 11 | RENAISSANCE TECHNOLOGIES LLC | 10,900 | 0.03% | $19K | -200 (-1.8%) |
| 12 | Vanguard Global Advisers, LLC | 4,802 | 0.01% | $8K | — |
| 13 | MORGAN STANLEY | 4,570 | 0.01% | $8K | — |
| 14 | NATIONAL BANK OF CANADA /FI/ | 2,875 | 0.01% | $5K | — |
| 15 | Trifecta Capital Advisors, LLC | 1,500 | 0.00% | $3K | — |
| 16 | Tower Research Capital LLC (TRC) | 1,466 | 0.00% | $3K | +455 (+45.0%) |
| 17 | SIMPLEX TRADING, LLC | 1,165 | 0.00% | $2K | +301 (+34.8%) |
| 18 | JPMORGAN CHASE & CO | 319 | 0.00% | $571 | +22 (+7.4%) |
| 19 | SBI Securities Co., Ltd. | 76 | 0.00% | $133 | -11 (-12.6%) |
| 20 | BARCLAYS PLC | 19 | 0.00% | $33 | NEW |
| 21 | BNP PARIBAS FINANCIAL MARKETS | 9 | 0.00% | $16 | — |
| 22 | Caitong International Asset Management Co., Ltd | 1 | 0.00% | $2 | NEW |
Exited since 2026-03-31 (1 filers; largest 1 shown)
| TANAKA CAPITAL MANAGEMENT INC | −26,296 |
Large holders from 13D/13G (latest per reporting person, last 2 years)
Filed when a holder crosses 5% or changes materially, so often more current than the quarter-end 13F. Percentages are the filer's own, against the share count they used.
| Reporting person | Form | Filed | Event | Shares | % of class |
|---|---|---|---|---|---|
| Ever Regal Group Ltd | SCHEDULE 13G/A | 2026-08-14 | 2026-06-30 | 2 | 0% |
| Fairy Eagle Investments Limited | SCHEDULE 13G/A | 2026-08-14 | 2026-06-30 | 1 | 0% |
| Lan Huang | SCHEDULE 13G/A | 2026-08-14 | 2026-06-30 | 5,293,444 | 12.9% |
| Linqing Jia | SCHEDULE 13G/A | 2026-08-14 | 2026-06-30 | 5,293,444 | 12.9% |
| Rosy Time Holdings Limited | SCHEDULE 13G/A | 2026-08-14 | 2026-06-30 | 1 | 0% |
| Decheng Capital China Life Sciences USD Fund III, L.P. | SCHEDULE 13G/A | 2026-02-13 | 2025-12-31 | 1,448,293 | 3.5% |
| Decheng Capital China Life Sciences USD Fund II, L.P. | SCHEDULE 13G/A | 2026-02-13 | 2025-12-31 | 1,617,409 | 3.9% |
| Decheng Capital Global Healthcare Fund (Master), LP | SCHEDULE 13G/A | 2026-02-13 | 2025-12-31 | 735,000 | 1.8% |
| Decheng Capital Global Healthcare GP, LLC | SCHEDULE 13G/A | 2026-02-13 | 2025-12-31 | 735,000 | 1.8% |
| Decheng Capital Management II (Cayman), LLC | SCHEDULE 13G/A | 2026-02-13 | 2025-12-31 | 1,617,409 | 3.9% |
| Decheng Capital Management III (Cayman), LLC | SCHEDULE 13G/A | 2026-02-13 | 2025-12-31 | 1,448,293 | 3.5% |
| Xiangmin Cui | SCHEDULE 13G/A | 2026-02-13 | 2025-12-31 | 3,800,702 | 9.2% |
Source: SEC Form 13F-HR information tables for the quarter ending 2026-06-30 (filed within 45 days of quarter end; amendments applied; values normalised to dollars), the share count from the company's latest 10-K/10-Q XBRL cover page, and Schedule 13D/13G filings. Each row is a legal 13F filer as filed — related entities (e.g. Vanguard's advisers) are not merged. Retail brokerage accounts are not reported on 13F, so the remainder is mostly retail and insiders.