IMRX · Immuneering Corp · Holdings

$4.06 -0.01 (-0.25%)

Russell 2000 member Rebalance outlook locked

Market Cap

$276.26M

64.70M

Volume · Oct 5 133.04K Avg daily vol (3M) 715.19K

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 →

Some SEC filings for this period have not finished importing. Holder totals and changes may be incomplete; these filings remain queued for recovery.

Quarter:

Holders: 112

Total Value: $175,569,638

Total Shares: 35,184,308

Showing 1–100 of 117 holdings by value · page 1 of 2

Institutional Ownership Trend

20 quarters

Holder Concentration

Across 112 13F filers · Δ vs Mar 31, 2026

Top Holder

27.6%

−5.1 pts

Top 5

59.7%

−2.7 pts

Top 10

72.5%

−4.5 pts

HHI

1,105

Broadly held−257

Quarterly Activity

vs Mar 31, 2026

New

Increased

Decreased

Sold Out

Unchanged

Holder count: +17

Institutional value: +12.3%

Shares held: +18.6%

Top Buyers

vs Mar 31, 2026

Institution	Added	Now Holds
Mega BlackRock, Inc.	+2,866,762	4,374,020
Mega STATE STREET CORP	+733,475	1,001,995
Mega GEODE CAPITAL MANAGEMENT, LLC	+732,806	1,370,750
Small DCF Advisers, LLC	+648,538	790,000
Small ALETHEA CAPITAL MANAGEMENT, LLC	+450,000	472,935

Top Sellers

vs Mar 31, 2026

Institution	Sold	Now Holds
Mega MARSHALL WACE, LLP	−1,264,688	731,897
Mega MILLENNIUM MANAGEMENT LLC	−772,310	330,402
Small Occam Crest Management LP	−266,600	278,498
Mega GOLDMAN SACHS GROUP INC	−231,435	96,220
Large Squarepoint Ops LLC	−168,357	57,689

Top New Positions

vs Mar 31, 2026

Institution	Acquired	Value (USD)
Mega Nuveen, LLC	438,362	$2,187,425
Mega VANGUARD PORTFOLIO MANAGEMENT LLC	359,085	$1,791,834
Mega D. E. Shaw & Co., Inc.	203,663	$1,016,278
Small Permanent Capital Management, LP	150,000	$748,500
Mega Bank of New York Mellon Corp	132,004	$658,698

Top Sold-Out Positions

vs Mar 31, 2026

Institution	Previously Held	Last Value (USD)
Small Diametric Capital, LP	174,897	$921,707
Mega WELLINGTON MANAGEMENT GROUP LLP	156,424	$824,353
Mid 683 Capital Management, LLC	150,697	$794,173
Large Hudson Bay Capital Management LP	95,889	$505,335
Mid Weiss Asset Management LP	87,985	$463,680

Filter: New 37 Increased 37 Reduced 20 Sold out 20 Unchanged 18

Showing 100 of 117

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

FMR LLC

$48,426,002

27.58%

9,704,610

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	5,587,334	$27,880,796	57.6%	Defined
FIDELITY MANAGEMENT TRUST CO	4,024,566	$20,082,584	41.5%	Defined
FIAM LLC	92,710	$462,622	1.0%	Defined

BlackRock, Inc.

$21,826,357

12.43%

4,374,020

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	9,269	$46,252	0.2%	Sole
BlackRock Investment Management, LLC	162,105	$808,903	3.7%	Sole
BLACKROCK ADVISORS LLC	117,043	$584,044	2.7%	Sole
BlackRock Fund Advisors	2,438,142	$12,166,328	55.7%	Sole
BlackRock Institutional Trust Company, N.A.	1,593,584	$7,951,984	36.4%	Sole
BlackRock Asset Management Ireland Ltd	53,877	$268,846	1.2%	Sole

Sanofi

$13,515,709

7.70%

2,708,559

VANGUARD CAPITAL MANAGEMENT LLC

$11,409,305

6.50%

2,286,434

PRICE T ROWE ASSOCIATES INC /MD/

$9,661,018

5.50%

1,936,076

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	44,004	$219,579	2.3%	Defined
Held directly	1,892,072	$9,441,439	97.7%	Sole

GEODE CAPITAL MANAGEMENT, LLC

$6,840,041

3.90%

1,370,750

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	204,442	$1,020,165	14.9%	Defined
Held directly	1,166,308	$5,819,876	85.1%	Defined

STATE STREET CORP

$4,999,955

2.85%

1,001,995

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	1,001,995	$4,999,955	100.0%	Defined

DCF Advisers, LLC

$3,942,100

2.25%

790,000

MARSHALL WACE, LLP

$3,652,165

2.08%

731,897

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

Manager	Shares	Value (USD)	% of position	Discretion
Marshall Wace North America L.P. joint	731,897	$3,652,165	100.0%	Other

Connor, Clark & Lunn Investment Management Ltd.

$3,000,262

1.71%

601,255

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

Manager	Shares	Value (USD)	% of position	Discretion
Manager 1	601,255	$3,000,262	100.0%	Sole

ALETHEA CAPITAL MANAGEMENT, LLC

$2,359,945

1.34%

472,935

Summit Financial, LLC

$2,256,797

1.29%

452,264

UBS Group AG

$2,239,796

1.28%

448,857

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

Manager	Shares	Value (USD)	% of position	Discretion
UBS AG	400,657	$1,999,278	89.3%	Defined
UBS Switzerland AG	48,200	$240,518	10.7%	Defined

Nuveen, LLC

$2,187,425

1.25%

438,362

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

Manager	Shares	Value (USD)	% of position	Discretion
TIAA CREF INVESTMENT MANAGEMENT LLC joint	36,520	$182,234	8.3%	Defined
TEACHERS ADVISORS, LLC joint	401,842	$2,005,191	91.7%	Defined

NORTHERN TRUST CORP

$2,180,589

1.24%

436,992

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	428,589	$2,138,659	98.1%	Defined
DWS INVESTMENT MANAGEMENT AMERICAS, INC joint	8,403	$41,930	1.9%	Other

LEVIN CAPITAL STRATEGIES, L.P.

$2,065,860

1.18%

414,000

CITADEL ADVISORS LLC

$1,928,190

1.10%

386,411

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	384,933	$1,920,815	99.6%	Defined
Held directly	1,478	$7,375	0.4%	Defined

VANGUARD FIDUCIARY TRUST CO

$1,800,212

1.03%

360,764

VANGUARD PORTFOLIO MANAGEMENT LLC

$1,791,834

1.02%

359,085

GSA CAPITAL PARTNERS LLP

$1,713,081

0.98%

343,303

MILLENNIUM MANAGEMENT LLC

$1,648,705

0.94%

330,402

Burkehill Global Management, LP

$1,497,000

0.85%

300,000

TWO SIGMA INVESTMENTS, LP

$1,439,215

0.82%

288,420

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$1,409,675

0.80%

282,500

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

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	282,500	$1,409,675	100.0%	Other

Occam Crest Management LP

$1,389,705

0.79%

278,498

MORGAN STANLEY

$1,130,189

0.64%

226,491

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

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY & CO. LLC	14,900	$74,351	6.6%	Defined
MORGAN STANLEY CAPITAL SERVICES, LLC	64,676	$322,733	28.6%	Defined
MORGAN STANLEY SMITH BARNEY LLC	146,698	$732,023	64.8%	Defined
PARAMETRIC PORTFOLIO ASSOCIATES LLC	217	$1,082	0.1%	Defined

D. E. Shaw & Co., Inc.

$1,016,278

0.58%

203,663

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.	97,591	$486,979	47.9%	Defined
D. E. Shaw Investment Management, L.L.C. joint	106,072	$529,299	52.1%	Defined

JANE STREET GROUP, LLC

$915,665

0.52%

183,500

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

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	183,500	$915,665	100.0%	Defined

CHARLES SCHWAB INVESTMENT MANAGEMENT INC

$837,825

0.48%

167,901

Permanent Capital Management, LP

$748,500

0.43%

150,000

PVG ASSET MANAGEMENT CORP

$730,790

0.42%

146,451

HighTower Advisors, LLC

$715,995

0.41%

143,486

Bank of New York Mellon Corp

$658,698

0.38%

132,004

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

Manager	Shares	Value (USD)	% of position	Discretion
Mellon Investments Corporation	46,466	$231,865	35.2%	Defined
The Bank of New York Mellon	85,536	$426,824	64.8%	Defined
Held directly	2	$9	0.0%	Defined

Kingsview Wealth Management, LLC

$613,770

0.35%

123,000

BANK OF AMERICA CORP /DE/

$578,066

0.33%

115,845

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	59,375	$296,281	51.3%	Defined
BOFA SECURITIES, INC.	56,470	$281,785	48.7%	Defined

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$544,409

0.31%

109,100

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

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	109,100	$544,409	100.0%	Other

BRIDGEWAY CAPITAL MANAGEMENT, LLC

$539,663

0.31%

108,149

ENVESTNET ASSET MANAGEMENT INC

$527,986

0.30%

105,809

GOLDMAN SACHS GROUP INC

$480,137

0.27%

96,220

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	16,499	$82,330	17.1%	Defined
GOLDMAN SACHS ASSET MANAGEMENT, L.P.	79,721	$397,807	82.9%	Defined

Fisher Asset Management, LLC

$440,781

0.25%

88,333

Corient Private Wealth LLC

$384,679

0.22%

77,090

CITADEL ADVISORS LLC

$366,266

0.21%

73,400

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	73,400	$366,266	100.0%	Defined

AMERIPRISE FINANCIAL INC

$356,555

0.20%

71,454

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	65	$324	0.1%	Defined
Ameriprise Financial Services, LLC	71,389	$356,231	99.9%	Defined

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$344,574

0.20%

69,053

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

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	69,053	$344,574	100.0%	Other

RHUMBLINE ADVISERS

$328,910

0.19%

65,914

ALPS ADVISORS INC

$327,633

0.19%

65,658

TD Asset Management Inc

$325,328

0.19%

65,196

XTX Topco Ltd

$321,331

0.18%

64,395

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	64,395	$321,331	100.0%	Defined

MANUFACTURERS LIFE INSURANCE COMPANY, THE

$310,083

0.18%

62,141

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	62,141	$310,083	100.0%	Defined

CITADEL ADVISORS LLC

$307,384

0.18%

61,600

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	61,600	$307,384	100.0%	Defined

Clearstead Advisors, LLC

$303,716

0.17%

60,865

AMERICAN CENTURY COMPANIES INC

$297,194

0.17%

59,558

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	59,558	$297,194	100.0%	Defined

Squarepoint Ops LLC

$287,868

0.16%

57,689

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

Manager	Shares	Value (USD)	% of position	Discretion
Squarepoint Capital LLP	57,689	$287,868	100.0%	Defined

BRANDYWINE MANAGERS, LLC

$274,779

0.16%

55,066

Flower City Capital

$274,594

0.16%

55,029

ALLIANCEBERNSTEIN L.P.

$263,122

0.15%

52,730

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

Manager	Shares	Value (USD)	% of position	Discretion
Equitable Holdings, Inc.	52,730	$263,122	100.0%	Defined

DEUTSCHE BANK AG\

$261,006

0.15%

52,306

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

Manager	Shares	Value (USD)	% of position	Discretion
DWS Investments UK Ltd	52,306	$261,006	100.0%	Defined

WELLS FARGO & COMPANY/MN

$233,052

0.13%

46,704

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	44,904	$224,070	96.1%	Defined
WELLS FARGO ADVISORS FINANCIAL NETWORK, LLC	1,800	$8,982	3.9%	Defined

WEALTH EFFECTS LLC

$200,099

0.11%

40,100

LPL Financial LLC

$184,779

0.11%

37,030

Prosight Management, LP

$183,936

0.10%

36,861

OPPENHEIMER & CO INC

$174,650

0.10%

35,000

MetLife Investment Management, LLC

$167,060

0.10%

33,479

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

Manager	Shares	Value (USD)	% of position	Discretion
METLIFE INC	33,479	$167,060	100.0%	Defined

JPMORGAN CHASE & CO

$162,273

0.09%

32,520

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.	23,001	$114,774	70.7%	Defined
J.P. Morgan Securities LLC	4,500	$22,455	13.8%	Defined
J.P. Morgan Securities plc	5,019	$25,044	15.4%	Defined

Invesco Ltd.

$155,567

0.09%

31,176

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	6,516	$32,514	20.9%	Defined
Invesco Trust Co joint	21,382	$106,696	68.6%	Defined
Invesco Capital Management LLC	3,278	$16,357	10.5%	Defined

JANE STREET GROUP, LLC

$145,209

0.08%

29,100

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

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	29,100	$145,209	100.0%	Defined

CITIGROUP INC

$131,301

0.07%

26,313

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	26,313	$131,301	100.0%	Defined

Berman McAleer LLC

$124,750

0.07%

25,000

MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.

$122,679

0.07%

24,585

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	24,585	$122,679	100.0%	Defined

CIBC Bancorp USA Inc.

$122,055

0.07%

24,460

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

Manager	Shares	Value (USD)	% of position	Discretion
CIBC National Trust Co	21,500	$107,285	87.9%	Defined
CIBC WORLD MARKETS CORP	2,960	$14,770	12.1%	Defined

FIRST MANHATTAN CO. LLC.

$120,982

0.07%

24,245

Vanguard Global Advisers, LLC

$120,972

0.07%

24,243

Cerity Partners LLC

$120,633

0.07%

24,175

Cetera Investment Advisers

$112,005

0.06%

22,446

GREAT VALLEY ADVISOR GROUP, INC.

$105,388

0.06%

21,120

BARCLAYS PLC

$101,585

0.06%

20,358

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

Manager	Shares	Value (USD)	% of position	Discretion
BARCLAYS BANK PLC	11,351	$56,641	55.8%	Defined
BARCLAYS CAPITAL INC.	9,007	$44,944	44.2%	Defined

FNY Investment Advisers, LLC

$99,800

0.06%

20,000

DIMENSIONAL FUND ADVISORS LP

$97,613

0.06%

19,562

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

Manager	Shares	Value (USD)	% of position	Discretion
DFA Australia Ltd.	2,762	$13,782	14.1%	Defined
Dimensional Ireland Ltd	5,588	$27,884	28.6%	Defined
Held directly	11,212	$55,947	57.3%	Sole

BNP PARIBAS ARBITRAGE, SA

$96,905

0.06%

19,420

Palumbo Wealth Management LLC

$95,224

0.05%

19,083

Future Financial Wealth Managment LLC

$89,820

0.05%

18,000

WINTON GROUP Ltd

$85,828

0.05%

17,200

NATIONS FINANCIAL GROUP INC, /IA/ /ADV

$84,830

0.05%

17,000

Kelsey Financial, LLC

$81,960

0.05%

16,425

Police & Firemen's Retirement System of New Jersey

$78,911

0.04%

15,814

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

Manager	Shares	Value (USD)	% of position	Discretion
Mellon Capital	15,814	$78,911	100.0%	Defined

WENDELL DAVID ASSOCIATES INC

$74,850

0.04%

15,000

China Universal Asset Management Co., Ltd.

$63,857

0.04%

12,797

Jump Financial, LLC

$63,373

0.04%

12,700

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

Manager	Shares	Value (USD)	% of position	Discretion
Jump Trading Holdings, LLC	2,700	$13,473	21.3%	Defined
Leap GP LLC joint	10,000	$49,900	78.7%	Defined

Focus Financial Network, Inc.

$62,375

0.04%

12,500

NEW YORK STATE COMMON RETIREMENT FUND

$60,379

0.03%

12,100

Quantbot Technologies LP

$58,133

0.03%

11,650

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

Manager	Shares	Value (USD)	% of position	Discretion
Manager 1	11,650	$58,133	100.0%	Sole

ROYAL BANK OF CANADA

$55,172

0.03%

11,057

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

Manager	Shares	Value (USD)	% of position	Discretion
RBC CMA LTD.	1,733	$8,647	15.7%	Defined
RBC Capital Markets, LLC	9,323	$46,521	84.3%	Defined
Held directly	1	$4	0.0%	Sole

Thayer Partners, LLC / MA

$54,890

0.03%

11,000

INTECH INVESTMENT MANAGEMENT LLC

$53,712

0.03%

10,764

VOYA INVESTMENT MANAGEMENT LLC

$50,613

0.03%

10,143

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

Manager	Shares	Value (USD)	% of position	Discretion
Voya Investment Management Co. LLC joint	10,143	$50,613	100.0%	Defined

Moors & Cabot, Inc.

$49,900

0.03%

10,000

Ausdal Financial Partners, Inc.

$49,900

0.03%

10,000

VestGen Advisors, LLC

$49,900

0.03%

10,000

Tidemark, LLC

$49,900

0.03%

10,000

State of Wyoming

$28,922

0.02%

5,796

Key facts CIK 1790340 CUSIP 45254E107 13F (30d) 3 filings 3 filers Visit website Investor relations