LB PHARMACEUTICALS INC (LBRX) is held by 50 institutional investors that disclose positions via SEC 13F filings. The largest disclosed holder is BlackRock, Inc. as of Q1 2026.

Are institutions buying or selling LBRX?

In Q1 2026, 34 institutions opened or increased positions in LB PHARMACEUTICALS INC while 15 reduced or exited — a net buying quarter.

What is the Smart Money Verdict on LBRX?

The Smart Money Verdict combines four independent sources (institutional 13F activity, insider trades, activist filings, and congressional trades) into a single assessment for LB PHARMACEUTICALS INC.

How many hedge funds hold LBRX?

50 institutional investors report holding LB PHARMACEUTICALS INC (LBRX) as of Q1 2026, based on SEC 13F filings.

Is institutional money flowing into LBRX?

As of Q1 2026, tracked institutions in LB PHARMACEUTICALS INC show 34 buyers versus 15 sellers — net inflows.

LB PHARMACEUTICALS INC

LBRX·50180M108·US·Common Stock·Healthcare - Biotechnology-Activist

Holders

Avg rating(10 Elite)

$320.3M

Total Value

69% (55)

Fund Consensus

34 buying - 15 selling

Smart Money Verdict

View all

Held by 50 funds

10 elite

Who's Trading

ActivistCACaligan Partners LP5.0%May 15, 2026

ActivistTCTCG Crossover GP II, LLC6.4%May 15, 2026

Activist

JPMORGAN CHASE & CO4.9%May 13, 2026

Activist

RA Capital Management, L.P.8.7%Feb 17, 2026

ActivistDTDeep Track Biotechnology Master Fund, Ltd.9.4%Feb 10, 2026

ActivistBPBlackRock Portfolio Management LLC3.8%Jan 21, 2026

InsiderDLDeep Track Biotechnology Master Fund, Ltd.Buy $30.0MSep 12, 2025

InsiderNRNussbaum RanBuy $15.0MSep 12, 2025

InsiderPLPontifax Management 4 G.P. (2015) Ltd.Buy $15.0MSep 12, 2025

InsiderVLVida Ventures GP III, L.L.C.Buy $5.0MSep 12, 2025

View all insider trades View all activist filings

13F: Mar 31, 2026Insider & Congress: Updated regularly

Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
BlackRock, Inc.	Increased	2.5M(+10.4%)	$60.9M	0.0%	+71.12%	33
RA CAPITAL MANAGEMENT, L.P.	Unchanged	2.2M	$54.5M	0.6%	+100.14%	0
JPMORGAN CHASE & CO	Decreased	1.4M(-11.4%)	$33.2M	0.0%	+88.41%	0
BALYASNY ASSET MANAGEMENT L.P.	Increased	923,694(+3.0%)	$22.8M	0.0%	+112.68%	29
VAVANGUARD CAPITAL MANAGEMENT LLC	New	894,653	$22.1M	0.0%	+37.81%	39
AIAlyeska Investment Group, L.P.	Increased	863,947(+28.0%)	$21.3M	0.1%	+92.28%	35
JENNISON ASSOCIATES LLC	Decreased	538,216(-34.5%)	$13.3M	0.0%	+107.61%	0
GEODE CAPITAL MANAGEMENT, LLC	Increased	518,228(+17.4%)	$12.8M	0.0%	+51.89%	33
STATE STREET CORP	Increased	504,373(+101.7%)	$12.4M	0.0%	+45.06%	45
CITADEL ADVISORS LLC	Increased	416,906(+2.3%)	$10.3M	0.0%	+113.52%	28
GOLDMAN SACHS GROUP INC	Increased	363,799(+20.0%)	$9M	0.0%	+97.47%	33
FMR LLC	Increased	222,508(+0.3%)	$5.5M	0.0%	+115.85%	27
BAKER BROS. ADVISORS LP	Unchanged	200,000	$4.9M	0.0%	+116.21%	0
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	Increased	186,095(+4.8%)	$4.6M	0.0%	+52.48%	28
VFVANGUARD FIDUCIARY TRUST CO	New	157,426	$3.9M	0.0%	+37.81%	37
NORTHERN TRUST CORP	Increased	154,398(+7.3%)	$3.8M	0.0%	+52.10%	29
UBS Group AG	Increased	137,932(+172.0%)	$3.4M	0.0%	+43.41%	43
MILLENNIUM MANAGEMENT LLC	New	136,966	$3.4M	0.0%	+37.81%	37
VPVANGUARD PORTFOLIO MANAGEMENT LLC	New	112,497	$2.8M	0.0%	+37.81%	36
AMERIPRISE FINANCIAL INC	Decreased	108,307(-44.0%)	$2.7M	0.0%	+73.47%	0