Xenetic BiosciencesXBIO
13F holders, Q4 2025 (December 31)At the end of Q4 2025, 11 institutions reported holding Xenetic Biosciences Inc. (XBIO) in their 13F filings, up 1 from Q3 2025. 4 opened new positions and 3 sold out. The largest holders were Renaissance Technologies ($387K), Citadel Advisors ($32K) and DRW Securities, LLC ($30K). 2 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Xenetic Biosciences Inc.
- CUSIP
- 984015602
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 4 | $74K |
| Exits | 3 | $49K |
All 13F filers, Q3 2025 → Q4 2025: 186,418 shares bought and 15,762 shares sold, net +170,656 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 11 holders
| Renaissance Technologies | 0.00% | Add +516.6% | 178,509 | $387K |
| Citadel Advisors | 0.00% | New | 14,879 | $32K |
| DRW Securities, LLC | 0.00% | New | 13,824 | $30K |
| Geode Capital Management, LLC | 0.00% | Add +27.1% | 13,581 | $29K |
| Tower Research Capital LLC (TRC) | 0.00% | New | 4,012 | $9K |
| JTC Employer Solutions Trustee Ltd | 0.00% | No change | 2,700 | $6K |
| Citigroup Inc. | 0.00% | New | 1,241 | $3K |
| Alexis Investment Partners, LLC | 0.00% | No change | 25 | $54 |
| Bank of America Corp. | 0.00% | Add +50.0% | 18 | $39 |
| Morgan Stanley | 0.00% | Reduce -25.0% | 3 | $7 |
| Darwin Wealth Management, LLC | 0.00% | No change | 2 | $4 |
"% of holder's portfolio" is XBIO's weight in each manager's 13F, not the share of Xenetic Biosciences Inc. the manager owns.