Who owns LeonaBio, Inc.?
Institutional ownership of LONA from SEC Form 13F filings across 29 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
29
13F holders
$15.6M
value, 2026 filers
43.4%
of shares outstanding (1.7M sh)
6
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30· % of fund = share of the manager's own book · % of co. = share of LONA's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | TCG Crossover Management, LLC | 464,398 | $4.3M | 0.1% | 11.8% | 0.0% |
| 2 | Blackstone Inc.NEW | 324,638 | $3.0M | 0.0% | 8.2% | new |
| 3 | ADAGE CAPITAL PARTNERS GP, L.L.C.NEW | 300,000 | $2.8M | 0.0% | 7.6% | new |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | 275,233 | $2.5M | 0.0% | 7% | -29.3% |
| 5 | GEODE CAPITAL MANAGEMENT, LLC | 80,418 | $739,513 | 0.0% | 2% | +0.1% |
| 6 | BlackRock, Inc. | 79,186 | $727,719 | 0.0% | 2% | +41.3% |
| 7 | VANGUARD FIDUCIARY TRUST CO | 42,814 | $393,461 | 0.0% | 1.1% | +6.9% |
| 8 | BANK OF AMERICA CORP /DE/ | 32,557 | $299,199 | 0.0% | 0.8% | 0.0% |
| 9 | MILLENNIUM MANAGEMENT LLC | 32,450 | $298,216 | 0.0% | 0.8% | +2.4% |
| 10 | Laird Norton Wetherby Trust Company, LLC | 21,818 | $200,508 | 0.0% | 0.6% | 0.0% |
| 11 | NORTHERN TRUST CORP | 14,394 | $132,281 | 0.0% | 0.4% | 0.0% |
| 12 | TWO SIGMA INVESTMENTS, LP | 13,276 | $122,006 | 0.0% | 0.3% | 0.0% |
| 13 | ACADIAN ASSET MANAGEMENT LLC | 10,230 | $94 | 0.0% | 0.3% | 0.0% |
| 14 | CITADEL ADVISORS LLCNEW | 10,001 | $91,909 | 0.0% | 0.3% | new |
| 15 | OSAIC HOLDINGS, INC. | 4,580 | $42,090 | 0.0% | 0.1% | -25.9% |
| 16 | JPMORGAN CHASE & CO | 2,012 | $17,826 | 0.0% | 0.1% | +16666.7% |
| 17 | Vanguard Global Advisers, LLC | 1,325 | $12,177 | 0.0% | 0% | 0.0% |
| 18 | ROYAL BANK OF CANADA | 844 | $8,000 | 0.0% | 0% | -62.1% |
| 19 | Tower Research Capital LLC (TRC)NEW | 438 | $4,025 | 0.0% | 0% | new |
| 20 | American Capital Advisory, LLC | 200 | $1,838 | 0.0% | 0% | 0.0% |
| 21 | UBS Group AG | 196 | $1,802 | 0.0% | 0% | -84.9% |
| 22 | ROTHSCHILD INVESTMENT LLC | 150 | $1,379 | 0.0% | 0% | 0.0% |
| 23 | MORGAN STANLEY | 89 | $818 | 0.0% | 0% | -81.1% |
| 24 | US BANCORP \DE\ | 81 | $744 | 0.0% | 0% | 0.0% |
| 25 | Global Retirement Partners, LLCNEW | 52 | $477 | 0.0% | 0% | new |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.