LeonabioLONA
13F holders, Q4 2025 (December 31)At the end of Q4 2025, 42 institutions reported holding Leonabio Inc. (LONA) in their 13F filings, up 8 from Q3 2025. 12 opened new positions and 7 sold out. The largest holders were Perceptive Advisors LLC ($14.1M), Acorn Capital Advisors, LLC ($3.8M) and Commodore Capital LP ($3.5M). 2 famous investors held it, including Israel Englander (0.0% of Millennium Management's portfolio) and Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio).
- Company
- Leonabio Inc.
- Filed as
- ATHIRA PHARMA INC (Q4 2025)
- CUSIP
- 04746L203
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 12 | $19.9M |
| Exits | 7 | $2.3M |
All 13F filers, Q3 2025 → Q4 2025: 4,017,966 shares bought and 443,397 shares sold, net +3,574,569 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 42 holders
| Perceptive Advisors LLC | 0.26% | Add +244.1% | 1,859,322 | $14.1M |
| Acorn Capital Advisors, LLC | 1.29% | New | 501,739 | $3.8M |
| Commodore Capital LP | 0.23% | New | 464,398 | $3.5M |
| NEA Management Company, LLC | 0.18% | New | 464,398 | $3.5M |
| TCG Crossover Management, LLC | 0.11% | New | 464,398 | $3.3M |
| Kalehua Capital Management LLC | 2.95% | — | 393,701 | $3.0M |
| Spruce Street Capital LP | 0.98% | — | 393,701 | $3.0M |
| ADAR1 Capital Management, LLC | 0.22% | New | 393,701 | $2.9M |
| Millennium Management | 0.00% | New | 324,445 | $2.5M |
| Vanguard Group Inc. | 0.00% | No change | 153,789 | $1.2M |
| Propel Bio Management, LLC | 0.96% | No change | 149,279 | $1.1M |
| Simplify Asset Management Inc. | 0.02% | No change | 149,279 | $1.1M |
| Seven Fleet Capital Management LP | 0.66% | — | 127,951 | $969K |
| Renaissance Technologies | 0.00% | Add +44.7% | 75,147 | $569K |
| BlackRock, Inc. | 0.00% | No change | 37,643 | $285K |
| Acadian Asset Management LLC | 0.00% | Reduce -6.7% | 37,482 | $282K |
| Pathstone Holdings, LLC | 0.00% | No change | 38,606 | $279K |
| Bank of America Corp. | 0.00% | Add +0.7% | 32,840 | $249K |
| Geode Capital Management, LLC | 0.00% | Add +1.1% | 30,944 | $234K |
| Laird Norton Wetherby Trust Company, LLC | 0.00% | Add +116.3% | 21,818 | $165K |
| Susquehanna International Group, LLP | 0.00% | Reduce -0.2% | 20,936 | $158K |
| Jane Street Group, LLC | 0.00% | New | 13,186 | $100K |
| Two Sigma Investments, LP | 0.00% | New | 10,746 | $81K |
| State Street Corp. | 0.00% | No change | 10,737 | $81K |
| Northern Trust Corp. | 0.00% | New | 10,461 | $79K |
| Scientech Research LLC | 0.05% | New | 10,108 | $77K |
| Osaic Holdings, Inc. | 0.00% | Add +31.4% | 9,210 | $70K |
| UBS Group AG | 0.00% | Add +2252.8% | 3,388 | $26K |
| Morgan Stanley | 0.00% | Reduce -7.8% | 470 | $4K |
| Royal Bank of Canada | 0.00% | Add +398.5% | 334 | $3K |
| Tower Research Capital LLC (TRC) | 0.00% | Reduce -40.6% | 379 | $3K |
| American Capital Advisory, LLC | 0.00% | No change | 200 | $2K |
| Rothschild Investment LLC | 0.00% | No change | 150 | $1K |
| McIlrath & Eck, LLC | 0.00% | No change | 82 | $621 |
| US Bancorp \de | 0.00% | No change | 81 | $613 |
| Group One Trading LLC | 0.00% | New | 69 | $522 |
| Global Retirement Partners, LLC | 0.00% | No change | 52 | $393 |
| NewEdge Advisors, LLC | 0.00% | New | 50 | $378 |
| Jones Financial Companies LLLP | 0.00% | No change | 33 | $250 |
| BNP Paribas Financial Markets | 0.00% | No change | 23 | $174 |
| JPMorgan Chase & Co. | 0.00% | No change | 12 | $91 |
| SBI Securities Co., Ltd. | 0.00% | Reduce -45.5% | 12 | $91 |
"% of holder's portfolio" is LONA's weight in each manager's 13F, not the share of Leonabio Inc. the manager owns.