LeonabioLONA
13F holders, Q1 2026 (March 31)At the end of Q1 2026, 40 institutions reported holding Leonabio Inc. (LONA) in their 13F filings, down 2 from Q4 2025. 3 opened new positions and 6 sold out. The largest holders were Perceptive Advisors LLC ($19.1M), ADAR1 Capital Management, LLC ($7.5M) and Acorn Capital Advisors, LLC ($6.5M). 2 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio) and Israel Englander (0.0% of Millennium Management's portfolio).
- Company
- Leonabio Inc.
- CUSIP
- 04746L203
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 3 | $10K |
| Exits | 6 | $617K |
All 13F filers, Q4 2025 → Q1 2026: 586,414 shares bought and 419,621 shares sold, net +166,793 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 40 holders
| Perceptive Advisors LLC | 0.38% | No change | 1,859,322 | $19.1M |
| ADAR1 Capital Management, LLC | 0.45% | Add +84.8% | 727,481 | $7.5M |
| Acorn Capital Advisors, LLC | 1.85% | Add +26.5% | 634,539 | $6.5M |
| Commodore Capital LP | 0.28% | No change | 464,398 | $4.8M |
| NEA Management Company, LLC | 0.27% | No change | 464,398 | $4.8M |
| TCG Crossover Management, LLC | 0.13% | No change | 464,398 | $4.7M |
| Kalehua Capital Management LLC | 2.86% | No change | 393,701 | $4.0M |
| Spruce Street Capital LP | 0.92% | No change | 393,701 | $3.8M |
| Vanguard Capital Management LLC | 0.00% | — | 194,760 | $2.0M |
| Seven Fleet Capital Management LP | 0.53% | Add +28.7% | 164,676 | $1.7M |
| Simplify Asset Management Inc. | 0.02% | No change | 149,279 | $1.5M |
| Propel Bio Management, LLC | 0.94% | No change | 149,279 | $1.5M |
| Geode Capital Management, LLC | 0.00% | Add +159.6% | 80,323 | $826K |
| Renaissance Technologies | 0.00% | Reduce -14.5% | 64,222 | $660K |
| BlackRock, Inc. | 0.00% | Add +48.9% | 56,051 | $576K |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 40,039 | $412K |
| Bank of America Corp. | 0.00% | Reduce -0.8% | 32,566 | $335K |
| Millennium Management | 0.00% | Reduce -90.2% | 31,678 | $326K |
| Laird Norton Wetherby Trust Company, LLC | 0.00% | No change | 21,818 | $224K |
| State Street Corp. | 0.00% | Add +52.2% | 16,337 | $168K |
| Northern Trust Corp. | 0.00% | Add +37.6% | 14,394 | $148K |
| Two Sigma Investments, LP | 0.00% | Add +23.5% | 13,276 | $136K |
| Acadian Asset Management LLC | 0.00% | Reduce -72.7% | 10,230 | $105K |
| Osaic Holdings, Inc. | 0.00% | Reduce -32.9% | 6,180 | $64K |
| Royal Bank of Canada | 0.00% | Add +566.2% | 2,225 | $23K |
| Vanguard Global Advisers, LLC | 0.00% | — | 1,325 | $14K |
| UBS Group AG | 0.00% | Reduce -61.7% | 1,299 | $13K |
| Annis Gardner Whiting Capital Advisors, LLC | 0.00% | New | 1,000 | $10K |
| Morgan Stanley | 0.00% | Add +0.2% | 471 | $5K |
| NewEdge Advisors, LLC | 0.00% | Add +720.0% | 410 | $4K |
| American Capital Advisory, LLC | 0.00% | No change | 200 | $2K |
| Rothschild Investment LLC | 0.00% | No change | 150 | $2K |
| McIlrath & Eck, LLC | 0.00% | No change | 82 | $843 |
| US Bancorp \de | 0.00% | No change | 81 | $833 |
| Jones Financial Companies LLLP | 0.00% | No change | 33 | $296 |
| BNP Paribas Financial Markets | 0.00% | No change | 23 | $236 |
| SBI Securities Co., Ltd. | 0.00% | No change | 12 | $123 |
| JPMorgan Chase & Co. | 0.00% | No change | 12 | $111 |
| Caitong International Asset Management Co., Ltd | 0.00% | New | 6 | $62 |
| Citigroup Inc. | 0.00% | New | 1 | $10 |
"% of holder's portfolio" is LONA's weight in each manager's 13F, not the share of Leonabio Inc. the manager owns.