Kyntra BioKYNB
13F holders, Q4 2025 (December 31)At the end of Q4 2025, 34 institutions reported holding Kyntra Bio Inc. (KYNB) in their 13F filings, up 2 from Q3 2025. 5 opened new positions and 4 sold out. The largest holders were Armistice Capital, LLC ($3.5M), Vanguard Group Inc. ($1.6M) and Acadian Asset Management LLC ($925K). 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
- Kyntra Bio Inc.
- Filed as
- FIBROGEN INC (Q4 2025)
- CUSIP
- 31572Q881
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 5 | $603K |
| Exits | 4 | $751K |
All 13F filers, Q3 2025 → Q4 2025: 138,404 shares bought and 119,852 shares sold, net +18,552 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 34 holders
| Armistice Capital, LLC | 0.09% | Add +5.8% | 400,000 | $3.5M |
| Vanguard Group Inc. | 0.00% | Reduce -1.2% | 181,973 | $1.6M |
| Acadian Asset Management LLC | 0.00% | Reduce -4.3% | 105,585 | $925K |
| BlackRock, Inc. | 0.00% | Reduce -0.1% | 84,690 | $744K |
| Two Sigma Investments, LP | 0.00% | Add +52.2% | 61,211 | $537K |
| Geode Capital Management, LLC | 0.00% | Add +0.1% | 43,704 | $384K |
| HighTower Advisors, LLC | 0.00% | No change | 39,746 | $349K |
| Marshall Wace, LLP | 0.00% | Reduce -55.1% | 32,502 | $285K |
| Renaissance Technologies | 0.00% | Add +8.2% | 31,681 | $278K |
| DRW Securities, LLC | 0.02% | Add +171.2% | 30,420 | $267K |
| Two Sigma Advisers, LP | 0.00% | New | 22,809 | $200K |
| State Street Corp. | 0.00% | No change | 20,284 | $178K |
| Citadel Advisors | 0.00% | Reduce -28.8% | 16,756 | $147K |
| Northern Trust Corp. | 0.00% | New | 12,852 | $113K |
| Jane Street Group, LLC | 0.00% | New | 12,497 | $110K |
| Squarepoint Ops LLC | 0.00% | Reduce -25.6% | 12,186 | $107K |
| ADAR1 Capital Management, LLC | 0.01% | New | 10,469 | $92K |
| Corient Private Wealth LP | 0.00% | New | 10,013 | $88K |
| UBS Group AG | 0.00% | Add +8.8% | 9,432 | $83K |
| Morgan Stanley | 0.00% | Add +283.2% | 5,924 | $52K |
| Group One Trading LLC | 0.00% | Reduce -0.9% | 4,588 | $40K |
| Bank of America Corp. | 0.00% | No change | 595 | $5K |
| CIBC Private Wealth Group LLC | 0.00% | No change | 287 | $3K |
| Tower Research Capital LLC (TRC) | 0.00% | Reduce -25.0% | 216 | $2K |
| SBI Securities Co., Ltd. | 0.00% | No change | 152 | $1K |
| Royal Bank of Canada | 0.00% | Add +0.7% | 138 | $1K |
| Osaic Holdings, Inc. | 0.00% | Reduce -84.1% | 102 | $895 |
| BNP Paribas Financial Markets | 0.00% | No change | 49 | $430 |
| JPMorgan Chase & Co. | 0.00% | No change | 12 | $105 |
| CFG Wealth Management Services, Inc. | 0.00% | — | 3 | $26 |
| US Bancorp \de | 0.00% | No change | 1 | $9 |
| Danske Bank A/S | 0.00% | No change | 1 | $9 |
| Smithfield Trust Co | 0.00% | No change | 1 | $0 |
| Cwm, LLC | 0.00% | No change | 26 | $0 |
"% of holder's portfolio" is KYNB's weight in each manager's 13F, not the share of Kyntra Bio Inc. the manager owns.