LBRX · Lb Pharmaceuticals Inc

$49.34 +1.82 (+3.83%) At close · Sep 4

Russell 2000 member Rebalance outlook locked

Market Cap

$1.59B

32.26M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Use institutional holdings through the 13F API or MCP →

Quarter:

Holders: 115

Total Value: $965,792,210

Total Shares: 29,757,889

Showing 1–100 of 115 holdings by value · page 1 of 2

Institutional Ownership Trend

4 quarters

Holder Concentration

Across 115 13F filers · Δ vs Mar 31, 2026

Top Holder

11.3%

−0.6 pts

Top 5

38.0%

−2.3 pts

Top 10

60.9%

−2.8 pts

HHI

492

Broadly held−42

Quarterly Activity

vs Mar 31, 2026

New

Increased

Decreased

Sold Out

Unchanged

Holder count: +38

Institutional value: +38.8%

Shares held: +5.5%

Top Buyers

vs Mar 31, 2026

Institution	Added	Now Holds
Mega BlackRock, Inc.	+263,460	2,734,305
Mega GOLDMAN SACHS GROUP INC	+212,657	576,456
Small Trails Edge Capital Partners, LP	+203,660	1,523,022
Mega MILLENNIUM MANAGEMENT LLC	+122,253	259,219
Mega AMERIPRISE FINANCIAL INC	+119,178	227,485

Top Sellers

vs Mar 31, 2026

Institution	Sold	Now Holds
Mid TCG Crossover Management, LLC	−392,179	1,447,310
Mid Logos Global Management LP	−330,000	585,000
Mega CITADEL ADVISORS LLC	−200,937	215,969
Mega UBS Group AG	−51,981	85,951
Mega Russell Investments Group, Ltd.	−37,993	34,074

Top New Positions

vs Mar 31, 2026

Institution	Acquired	Value (USD)
Mid BOOTHBAY FUND MANAGEMENT, LLC	275,675	$8,947,032
Mega RAYMOND JAMES FINANCIAL INC	91,656	$2,974,695
Small Longbow Finance SA	82,336	$2,672,214
Small NEXTBio Capital Management LP	68,249	$2,215,021
Mid ALERUS FINANCIAL NA	54,891	$1,781,487

Top Sold-Out Positions

vs Mar 31, 2026

Institution	Previously Held	Last Value (USD)
Mega JANUS HENDERSON GROUP PLC	65,429	$1,613,479
Mid Opaleye Management Inc.	14,506	$357,717
Mid Soleus Capital Management, L.P.	10,000	$246,600
Large STRS OHIO	5,100	$125,766
Large CWM, LLC	29	$715

Filter: New 43 Increased 41 Reduced 13 Sold out 5 Unchanged 18

Showing 100 of 115

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

Deep Track Capital, LP

$108,815,253

11.27%

3,352,804

BlackRock, Inc.

$88,741,866

9.19%

2,734,305

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BLACKROCK FINANCIAL MANAGEMENT INC/DE	14,157	$459,465	0.5%	Sole
BlackRock Investment Management, LLC	100,222	$3,252,705	3.7%	Sole
BLACKROCK ADVISORS LLC	875,203	$28,404,713	32.0%	Sole
BlackRock Fund Advisors	981,347	$31,849,616	35.9%	Sole
BlackRock Institutional Trust Company, N.A.	682,981	$22,166,148	25.0%	Sole
BlackRock Investment Management (UK) Ltd.	78,763	$2,556,253	2.9%	Sole
Aperio Group, LLC	1,632	$52,966	0.1%	Sole

RA CAPITAL MANAGEMENT, L.P.

$71,680,242

7.42%

2,208,604

Trails Edge Capital Partners, LP

$49,429,679

5.12%

1,523,022

Commodore Capital LP

$48,682,500

5.04%

1,500,000

JPMORGAN CHASE & CO

$48,594,642

5.03%

1,497,293

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
JPMorgan Chase Bank, N.A.	34,470	$1,118,723	2.3%	Defined
J.P. Morgan Investment Management Inc.	1,099,386	$35,680,572	73.4%	Defined
JPMorgan Asset Management (UK) Ltd	363,437	$11,795,347	24.3%	Defined

TCG Crossover Management, LLC

$46,972,446

4.86%

1,447,310

Caligan Partners LP

$46,672,561

4.83%

1,438,070

Spruce Street Capital LP

$44,663,240

4.62%

1,376,159

Nantahala Capital Management, LLC

$34,171,674

3.54%

1,052,894

VANGUARD CAPITAL MANAGEMENT LLC

$31,519,160

3.26%

971,165

Balyasny Asset Management L.P.

$29,906,341

3.10%

921,471

Alyeska Investment Group, L.P.

$28,039,399

2.90%

863,947

Vivo Capital, LLC

$25,964,000

2.69%

800,000

Nan Fung Group Holdings Ltd

$20,467,972

2.12%

630,657

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Pivotal bioVenture Partners Investment Advisor LLC joint	630,657	$20,467,972	100.0%	Defined

GEODE CAPITAL MANAGEMENT, LLC

$19,888,195

2.06%

612,793

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GEODE CAPITAL MANAGEMENT TRUST COMPANY, LLC	87,879	$2,852,112	14.3%	Defined
Held directly	524,914	$17,036,083	85.7%	Defined

STATE STREET CORP

$19,538,818

2.02%

602,028

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
STATE STREET GLOBAL ADVISORS EUROPE LIMITED joint	602,028	$19,538,818	100.0%	Defined

Logos Global Management LP

$18,986,175

1.97%

585,000

GOLDMAN SACHS GROUP INC

$18,708,879

1.94%

576,456

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GOLDMAN SACHS & CO. LLC	565,222	$18,344,280	98.1%	Defined
GOLDMAN SACHS ASSET MANAGEMENT, L.P.	11,234	$364,599	1.9%	Defined

JENNISON ASSOCIATES LLC

$17,554,974

1.82%

540,902

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Prudential Financial Inc	540,902	$17,554,974	100.0%	Defined

GREAT POINT PARTNERS LLC

$10,295,407

1.07%

317,221

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
JAY JEFFREY R joint	317,221	$10,295,407	100.0%	Defined

BOOTHBAY FUND MANAGEMENT, LLC

$8,947,032

0.93%

275,675

MILLENNIUM MANAGEMENT LLC

$8,412,952

0.87%

259,219

AMERIPRISE FINANCIAL INC

$7,383,025

0.76%

227,485

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Columbia Management Investment Advisers, LLC	227,485	$7,383,025	100.0%	Defined

CITADEL ADVISORS LLC

$7,009,273

0.73%

215,969

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	146,685	$4,760,661	67.9%	Defined
Held directly	69,284	$2,248,612	32.1%	Defined

HighVista Strategies LLC

$6,864,589

0.71%

211,511

BAKER BROS. ADVISORS LP

$6,491,000

0.67%

200,000

CHARLES SCHWAB INVESTMENT MANAGEMENT INC

$6,344,498

0.66%

195,486

FMR LLC

$6,130,976

0.63%

188,907

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Fidelity Management & Research Co LLC	188,854	$6,129,256	100.0%	Defined
STRATEGIC ADVISERS LLC	53	$1,720	0.0%	Defined

NORTHERN TRUST CORP

$6,037,829

0.63%

186,037

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
NORTHERN TRUST CO joint	182,520	$5,923,685	98.1%	Defined
DWS INVESTMENT MANAGEMENT AMERICAS, INC joint	3,517	$114,144	1.9%	Other

Eversept Partners, LP

$5,960,782

0.62%

183,663

VANGUARD FIDUCIARY TRUST CO

$5,283,706

0.55%

162,801

VANGUARD PORTFOLIO MANAGEMENT LLC

$4,938,417

0.51%

152,162

Integral Health Asset Management, LLC

$4,868,250

0.50%

150,000

RAYMOND JAMES FINANCIAL INC

$2,974,695

0.31%

91,656

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
CHARTWELL INVESTMENT PARTNERS, LLC	91,656	$2,974,695	100.0%	Defined

BNP PARIBAS ARBITRAGE, SA

$2,803,170

0.29%

86,371

UBS Group AG

$2,789,539

0.29%

85,951

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Financial Services Inc	157	$5,095	0.2%	Defined
UBS AG	85,794	$2,784,444	99.8%	Defined

Longbow Finance SA

$2,672,214

0.28%

82,336

Boxer Capital Management, LLC

$2,271,850

0.24%

70,000

NEXTBio Capital Management LP

$2,215,021

0.23%

68,249

WELLINGTON MANAGEMENT GROUP LLP

$1,911,305

0.20%

58,891

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Wellington Management Company LLP	19,217	$623,687	32.6%	Defined
Wellington Trust Company, NA joint	37,118	$1,204,664	63.0%	Defined
Wellington Management Australia Pty Ltd	2,556	$82,954	4.3%	Defined

Bank of New York Mellon Corp

$1,784,341

0.18%

54,979

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Mellon Investments Corporation	15,762	$511,555	28.7%	Defined
The Bank of New York Mellon	38,589	$1,252,405	70.2%	Defined
BNY Mellon Advisors, Inc.	627	$20,349	1.1%	Defined
Held directly	1	$32	0.0%	Defined

ALERUS FINANCIAL NA

$1,781,487

0.18%

54,891

Nuveen, LLC

$1,692,267

0.18%

52,142

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Nuveen Asset Management, LLC joint	6,496	$210,827	12.5%	Defined
TEACHERS ADVISORS, LLC joint	45,646	$1,481,440	87.5%	Defined

MORGAN STANLEY

$1,661,920

0.17%

51,207

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY & CO INTERNATIONAL PLC	23	$746	0.0%	Defined
MORGAN STANLEY & CO. LLC	6,114	$198,429	11.9%	Defined
MORGAN STANLEY CAPITAL SERVICES, LLC	19,274	$625,537	37.6%	Defined
MORGAN STANLEY SMITH BARNEY LLC	5,489	$178,145	10.7%	Defined
PARAMETRIC PORTFOLIO ASSOCIATES LLC	20,307	$659,063	39.7%	Defined

TWO SIGMA INVESTMENTS, LP

$1,579,000

0.16%

48,652

XTX Topco Ltd

$1,525,579

0.16%

47,006

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
XTX EXECUTION SERVICES LLC joint	47,006	$1,525,579	100.0%	Defined

Y-Intercept (Hong Kong) Ltd

$1,279,148

0.13%

39,413

Russell Investments Group, Ltd.

$1,105,869

0.11%

34,074

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Russell Investment Management, LLC	16,806	$545,438	49.3%	Defined
Russell Investments Canada Limited	683	$22,166	2.0%	Defined
Russell Investments Capital, LLC	7,047	$228,710	20.7%	Defined
Russell Investments France SAS	4,794	$155,589	14.1%	Defined
Russell Investments Limited	939	$30,475	2.8%	Defined
Russell Investments Trust Company	3,805	$123,491	11.2%	Defined

STEMPOINT CAPITAL LP

$1,031,582

0.11%

31,785

GREAT LAKES ADVISORS, LLC

$986,956

0.10%

30,410

Swiss National Bank

$980,141

0.10%

30,200

ALPS ADVISORS INC

$944,505

0.10%

29,102

ACUTA CAPITAL PARTNERS, LLC

$938,566

0.10%

28,919

RHUMBLINE ADVISERS

$901,891

0.09%

27,789

ALLIANCEBERNSTEIN L.P.

$895,758

0.09%

27,600

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Equitable Holdings, Inc.	27,600	$895,758	100.0%	Defined

BANK OF AMERICA CORP /DE/

$861,355

0.09%

26,540

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BANK OF AMERICA NA	16,685	$541,511	62.9%	Defined
MANAGED ACCOUNT ADVISORS LLC	9,855	$319,844	37.1%	Defined

Quadrature Capital Ltd

$777,459

0.08%

23,955

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Quadrature US Inc.	23,955	$777,459	100.0%	Other

AMERICAN CENTURY COMPANIES INC

$744,030

0.08%

22,925

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
AMERICAN CENTURY INVESTMENT MANAGEMENT INC	22,925	$744,030	100.0%	Defined

DEUTSCHE BANK AG\

$713,100

0.07%

21,972

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
DWS INVESTMENT MANAGEMENT AMERICAS, INC	138	$4,478	0.6%	Defined
DWS Investments UK Ltd	21,834	$708,622	99.4%	Defined

Focus Partners Wealth

$635,241

0.07%

19,573

WELLS FARGO & COMPANY/MN

$634,073

0.07%

19,537

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
WELLS FARGO BANK N A	19,537	$634,073	100.0%	Defined

Calamos Advisors LLC

$623,070

0.06%

19,198

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	12,546	$407,180	65.4%	Other
Held directly	6,652	$215,890	34.6%	Sole

PRICE T ROWE ASSOCIATES INC /MD/

$604,377

0.06%

18,622

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
T. Rowe Price International Ltd	18,622	$604,377	100.0%	Defined

HRT FINANCIAL LP

$562,282

0.06%

17,325

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM

$531,547

0.06%

16,378

CITIGROUP INC

$510,159

0.05%

15,719

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citigroup Financial Products Inc. joint	15,719	$510,159	100.0%	Defined

MEYER HANDELMAN CO

$489,875

0.05%

15,094

HOLLENCREST CAPITAL MANAGEMENT

$445,347

0.05%

13,722

D. E. Shaw & Co., Inc.

$438,726

0.05%

13,518

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
D. E. SHAW & CO, L.P.	13,518	$438,726	100.0%	Defined

MetLife Investment Management, LLC

$437,136

0.05%

13,469

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
METLIFE INC	13,469	$437,136	100.0%	Defined

Knott David M Jr

$420,779

0.04%

12,965

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Dorset Partners LLC	12,965	$420,779	100.0%	Defined

SEI INVESTMENTS CO

$409,289

0.04%

12,611

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SEI INVESTMENTS MANAGEMENT CORP	6,115	$198,462	48.5%	Sole
SEI TRUST CO	6,496	$210,827	51.5%	Sole

Virtu Financial LLC

$397,898

0.04%

12,260

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Virtu Americas LLC	12,260	$397,898	100.0%	Defined

Invesco Ltd.

$389,491

0.04%

12,001

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Invesco Advisers, Inc. joint	3,136	$101,778	26.1%	Defined
Invesco Trust Co joint	8,865	$287,713	73.9%	Defined

Virtus Investment Advisers, LLC

$373,654

0.04%

11,513

VANGUARD ASSET MANAGEMENT, Ltd

$342,075

0.04%

10,540

MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.

$334,481

0.03%

10,306

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Global X Management CO LLC joint	10,306	$334,481	100.0%	Defined

Legal & General Group Plc

$319,291

0.03%

9,838

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Legal & General Investment Management America Inc	2,176	$70,622	22.1%	Defined
Legal & General Investment Management Ltd joint	7,662	$248,669	77.9%	Defined

NEW YORK STATE COMMON RETIREMENT FUND

$305,077

0.03%

9,400

Jupiter Topco LLC

$301,831

0.03%

9,300

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
JANUS HENDERSON INVESTORS UK Ltd	9,300	$301,831	100.0%	Defined

BARCLAYS PLC

$289,757

0.03%

8,928

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BARCLAYS BANK PLC	7,698	$249,838	86.2%	Defined
BARCLAYS CAPITAL INC.	1,230	$39,919	13.8%	Defined

Vanguard Global Advisers, LLC

$284,078

0.03%

8,753

Jump Financial, LLC

$227,769

0.02%

7,018

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Leap GP LLC joint	7,018	$227,769	100.0%	Defined

Verdad Advisers, LP

$222,868

0.02%

6,867

MANUFACTURERS LIFE INSURANCE COMPANY, THE

$202,908

0.02%

6,252

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MANULIFE FINANCIAL CORP joint	6,252	$202,908	100.0%	Defined

Police & Firemen's Retirement System of New Jersey

$196,060

0.02%

6,041

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Mellon Capital	6,041	$196,060	100.0%	Defined

Aquatic Capital Management LLC

$193,301

0.02%

5,956

Vanguard Investments Australia, Ltd.

$165,682

0.02%

5,105

Persistent Asset Partners Ltd

$159,873

0.02%

4,926

KLP KAPITALFORVALTNING AS

$110,347

0.01%

3,400

LOS ANGELES CAPITAL MANAGEMENT LLC

$85,356

0.01%

2,630

FEDERATED HERMES, INC.

$81,137

0.01%

2,500

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
FEDERATED EQUITY MANAGEMENT CO OF PENNSYLVANIA	1,000	$32,455	40.0%	Defined
FEDERATED GLOBAL INVESTMENT MANAGEMENT CORP	1,500	$48,682	60.0%	Defined

Ameritas Investment Partners, Inc.

$65,916

0.01%

2,031

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
EATON VANCE MANAGEMENT	2,031	$65,916	100.0%	Other

Mitsubishi UFJ Asset Management Co., Ltd.

$45,437

0.00%

1,400

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MITSUBISHI UFJ FINANCIAL GROUP INC	1,400	$45,437	100.0%	Defined

Pinnacle Wealth Planning Services, Inc.

$42,645

0.00%

1,314

Tower Research Capital LLC (TRC)

$24,729

0.00%

762

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Tower Research Capital Investments LLC	35	$1,135	4.6%	Other
Latour Trading LLC (Latour)	727	$23,594	95.4%	Defined

ROYAL BANK OF CANADA

$22,653

0.00%

698

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
RBC CMA LTD.	680	$22,069	97.4%	Defined
RBC Trust Co (Delaware) Ltd	18	$584	2.6%	Defined

NISA INVESTMENT ADVISORS, LLC

$21,420

0.00%

660

FIFTH THIRD BANCORP

$12,657

0.00%

390

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Fifth Third Bank, National Association	390	$12,657	100.0%	Defined

Key facts CIK 1691082 CUSIP 50180M108 13F (30d) 94 filings 94 filers Visit website Investor relations