Who owns LBRX?
Institutional ownership of LB Pharmaceuticals Inc from Form 13F, Q2 2026
115 institutional managers reported holding LB Pharmaceuticals Inc (LBRX) in Form 13F filings for Q2 2026, with 30,810,783 shares worth $1.0B. The largest reported holder was Deep Track Capital, LP. Managers that filed both quarters added a net 2,606,848 shares (+9.2%). 41 opened new positions and 3 sold out.
- Funds holding
- 115
- Value held
- $1.0B
- New / sold out
- 41 / 3
- Net shares, same filers
- +9.2%
Holdings as of June 30, 2026, the end of Q2 2026. Managers have 45 days after a quarter ends to file Form 13F (by August 14, 2026 for Q2 2026), so positions may have changed since.
Largest holders of LBRX
| Fund | Value | Share of 13F holdings | Shares | Move |
|---|---|---|---|---|
| Deep Track Capital, LP | $109M | 10.9% | 3,352,804 | Unchanged |
| BlackRock, Inc. | $88.7M | 8.9% | 2,734,305 | Added |
| Ra Capital Management, L.p. | $71.7M | 7.2% | 2,208,604 | Unchanged |
| Nantahala Capital Management, LLC | $68.3M | 6.8% | 2,105,788 | Added |
| Trails Edge Capital Partners, LP | $49.4M | 4.9% | 1,523,022 | Added |
| JPMorgan Chase & Co | $48.9M | 4.9% | 1,497,293 | Added |
| Commodore Capital LP | $48.7M | 4.9% | 1,500,000 | Unchanged |
| TCG Crossover Management, LLC | $47.0M | 4.7% | 1,447,310 | Trimmed |
| Caligan Partners LP | $46.7M | 4.7% | 1,438,070 | Unchanged |
| Spruce Street Capital LP | $44.7M | 4.5% | 1,376,159 | Unchanged |
| Vanguard Capital Management LLC | $31.5M | 3.2% | 971,165 | Added |
| Balyasny Asset Management L.P. | $29.9M | 3.0% | 921,471 | Trimmed |
| Alyeska Investment Group, L.P. | $28.0M | 2.8% | 863,947 | Unchanged |
| Vivo Capital, LLC | $26.0M | 2.6% | 800,000 | Unchanged |
| Nan Fung Group Holdings Ltd | $20.5M | 2.0% | 630,657 | Unchanged |
| Geode Capital Management, LLC | $19.9M | 2.0% | 612,793 | Added |
| State Street Corp | $19.5M | 2.0% | 602,028 | Added |
| Logos Global Management LP | $19.0M | 1.9% | 585,000 | Trimmed |
| Goldman Sachs Group Inc | $18.7M | 1.9% | 576,456 | Added |
| Jennison Associates LLC | $17.6M | 1.8% | 540,902 | Added |
| Great Point Partners LLC | $10.3M | 1.0% | 317,221 | Added |
| Boothbay Fund Management, LLC | $8.9M | 0.9% | 275,675 | New |
| Millennium Management LLC | $8.4M | 0.8% | 259,219 | Added |
| Ameriprise Financial Inc | $7.4M | 0.7% | 227,485 | Added |
| Citadel Advisors LLC | $7.0M | 0.7% | 215,969 | Trimmed |
Share of 13F holdings is each fund's shares as a share of the 30,810,783 LBRX shares all 13F filers reported, not of shares outstanding.
Biggest buyers in Q2 2026
- Nantahala Capital Management, LLC Added+$34.2M
- Boothbay Fund Management, LLC New+$8.9M
- BlackRock, Inc. Added+$8.6M
- Goldman Sachs Group Inc Added+$6.9M
- Trails Edge Capital Partners, LP Added+$6.6M
- Millennium Management LLC Added+$4.0M
- Ameriprise Financial Inc Added+$3.9M
- State Street Corp Added+$3.2M
- Geode Capital Management, LLC Added+$3.1M
- Raymond James Financial Inc New+$3.0M
Biggest sellers in Q2 2026
- TCG Crossover Management, LLC Trimmed-$12.7M
- Logos Global Management LP Trimmed-$10.7M
- Citadel Advisors LLC Trimmed-$6.5M
- Stempoint Capital LP Trimmed-$2.2M
- UBS Group AG Trimmed-$1.7M
- Russell Investments Group, Ltd. Trimmed-$1.2M
- FMR LLC Trimmed-$1.1M
- Opaleye Management Inc. Sold out-$358K
- Soleus Capital Management, L.P. Sold out-$247K
- Calamos Advisors LLC Trimmed-$158K
The change in shares since the quarter before, adjusted for stock splits and priced at the Q2 2026 value per share. Funds bought $122M and sold $37.3M; 42 added and 13 trimmed.
Schedule 13D and 13G filings on LBRX
Owners of more than 5% must file within days, so these can be newer than the 13F data.
- 2026-07-16JPMORGAN CHASE & CO SCHEDULE 13G filed by LB Pharmaceuticals IncSchedule 13G
- 2026-01-21BlackRock, Inc. SCHEDULE 13G filed by BlackRock Inc.Schedule 13G
- 2026-01-21JPMORGAN CHASE & CO SCHEDULE 13G filed by LB Pharmaceuticals IncSchedule 13G
- 2025-09-19RA CAPITAL MANAGEMENT, L.P. SCHEDULE 13G filed by LB Pharmaceuticals IncSchedule 13G
Questions about LBRX ownership
- Who owns LBRX stock?
- 115 institutional investment managers reported LBRX positions in their Form 13F filings for Q2 2026, holding 30,810,783 shares worth $1.0B in total. Deep Track Capital, LP reported the largest position.
- Are funds buying or selling LBRX?
- In Q2 2026, 41 managers opened new LBRX positions, 42 added, 13 trimmed and 3 sold out. Managers that filed in both quarters added a net 2,606,848 shares.
- How current is this LBRX institutional ownership data?
- It covers holdings as of the end of Q2 2026. Managers have 45 days after the quarter ends to file Form 13F (by August 14, 2026 for Q2 2026), so positions may have changed since.
From the SEC's Form 13F data sets for Q2 2026: every 13F holdings report, matched to LBRX by CUSIP. Options are left out. LBRX news and filings · LBRX insider trades · Top funds