93 tracked 13F filers disclose a position in LBRX as of the latest SEC 13F filings, a combined $749.1M in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | Deep Track Capital, LP | $82.7M | 3.4M | —Held | Q1 2026 | |
| 2 | BlackRock, Inc. | $60.9M | 2.5M | ▲+10% Added · +232K sh | Q1 2026 | |
| 3 | RA CAPITAL MANAGEMENT, L.P. | $54.5M | 2.2M | —Held | Q1 2026 | |
| 4 | TCG Crossover Management, LLC | $45.3M | 1.8M | ▲+5.4% Added · +94K sh | Q1 2026 | |
| 5 | Trails Edge Capital Partners, LP | $49.4M | 1.5M | ▲+15% Added · +204K sh | Q2 2026 | |
| 6 | Commodore Capital LP | $37.0M | 1.5M | —Held | Q1 2026 | |
| 7 | Caligan Partners LP | $34.6M | 1.4M | ▲New +1.4M sh | Q1 2026 | |
| 8 | JPMORGAN CHASE & CO | $33.2M | 1.4M | ▼−11% Reduced · −184K sh | Q1 2026 | |
| 9 | Spruce Street Capital LP | $44.7M | 1.4M | —Held | Q2 2026 | |
| 10 | Nantahala Capital Management, LLC | $34.2M | 1.1M | —Held | Q2 2026 | |
| 11 | BALYASNY ASSET MANAGEMENT L.P. | $22.8M | 924K | ▲+3.0% Added · +27K sh | Q1 2026 | |
| 12 | Logos Global Management LP | $22.6M | 915K | ▼−24% Reduced · −285K sh | Q1 2026 | |
| 13 | VANGUARD CAPITAL MANAGEMENT LLC | $22.1M | 895K | →First observed position No prior filed position | Q1 2026 | |
| 14 | Alyeska Investment Group, L.P. | $21.3M | 864K | ▲+28% Added · +189K sh | Q1 2026 | |
| 15 | Vivo Capital, LLC | $26.0M | 800K | —Held | Q2 2026 | |
| 16 | GEODE CAPITAL MANAGEMENT, LLC | $19.9M | 613K | ▲+18% Added · +95K sh | Q2 2026 | |
| 17 | STATE STREET CORP | $19.5M | 602K | ▲+19% Added · +98K sh | Q2 2026 | |
| 18 | JENNISON ASSOCIATES LLC | $13.3M | 538K | ▼−35% Reduced · −284K sh | Q1 2026 | |
| 19 | CITADEL ADVISORS LLC | $10.3M | 417K | ▲+2.3% Added · +9K sh | Q1 2026 | |
| 20 | GOLDMAN SACHS GROUP INC | $9.0M | 364K | ▲+20% Added · +61K sh | Q1 2026 | |
| 21 | GREAT POINT PARTNERS LLC | $7.4M | 300K | ▲New +300K sh | Q1 2026 | |
| 22 | FMR LLC | $5.5M | 223K | ▲+0.3% Added · +643 sh | Q1 2026 | |
| 23 | HighVista Strategies LLC | $6.9M | 212K | ▲+22% Added · +38K sh | Q2 2026 | |
| 24 | BAKER BROS. ADVISORS LP | $4.9M | 200K | —Held | Q1 2026 | |
| 25 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $4.6M | 186K | ▲+4.8% Added · +8K sh | Q1 2026 |
Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
Last quarter, 20 funds opened a new position in LBRX and 15 added to an existing one, while 4 reduced and 0 exited entirely — based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).
| Company | Co-held by | Combined value |
|---|---|---|
| NVIDIA CORPNVDA | 35 funds | $138.4B |
| AMAZON.COM INCAMZN | 35 funds | $64.5B |
| REVOLUTION MEDICINES INCRVMD | 35 funds | $3.5B |
| TANGO THERAPEUTICS INCTNGX | 35 funds | $908.2M |
| MICROSOFT CORPMSFT | 34 funds | $86.4B |
| ELI LILLY & COLLY | 34 funds | $29.4B |
| COGENT BIOSCIENCES INCCOGT | 34 funds | $965.2M |
| BROADCOM INCAVGO | 33 funds | $57.8B |
| CYTOKINETICS INCCYTK | 33 funds | $727.5M |
| JPMORGAN CHASE & COJPM | 32 funds | $18.6B |
| JOHNSON & JOHNSONJNJ | 32 funds | $11.3B |
| UNITEDHEALTH GROUP INCUNH | 32 funds | $10.4B |
Ranked by how many of LBRX's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Sep 12, 2025 | Vida Ventures GP III, L.L.C. | 10% Owner | Buy (P) | 333K | $5.0M |
| Sep 12, 2025 | Vida Ventures GP III, L.L.C. | 10% Owner | Buy (P) | 767 | $12K |
| Sep 12, 2025 | Nussbaum Ran | Director | Buy (P) | 1.0M | $15.0M |
| Sep 12, 2025 | Pontifax Management 4 G.P. (2015) Ltd. | 10% Owner | Buy (P) | 1.0M | $15.0M |
| Sep 12, 2025 | Deep Track Capital, LP | 10% Owner | Buy (P) | 2.0M | $30.0M |
| Sep 12, 2025 | Deep Track Capital, LP | 10% Owner | Buy (P) | 667K | $10.0M |
Connected entities for LBRX
This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/LBRX/capital-change-brief"
Use Arkolith's capital_change_brief for LBRX. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for LBRX. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.