RNAC · Cartesian Therapeutics, Inc.

$8.92 -0.35 (-3.78%)

Russell 2000 member Rebalance outlook locked

Market Cap

$280.47M

30.26M

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: 96

Total Value: $92,282,016

Total Shares: 8,860,242

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 96 13F filers · Δ vs Mar 31, 2026

Top Holder

25.5%

−5.9 pts

Top 5

52.5%

−8.7 pts

Top 10

70.2%

−8.1 pts

HHI

944

Broadly held−373

Quarterly Activity

vs Mar 31, 2026

New

Increased

Decreased

Sold Out

Unchanged

Holder count: +13

Institutional value: +109.9%

Shares held: +23.9%

Top Buyers

vs Mar 31, 2026

Institution	Added	Now Holds
Mid 683 Capital Management, LLC	+320,000	650,000
Mega AQR CAPITAL MANAGEMENT LLC	+272,436	356,456
Mega BlackRock, Inc.	+220,131	819,239
Mega VANGUARD CAPITAL MANAGEMENT LLC	+148,226	555,823
Mega TWO SIGMA INVESTMENTS, LP	+128,980	296,293

Top Sellers

vs Mar 31, 2026

Institution	Sold	Now Holds
Mega FMR LLC	−431,314	368,429
Large Erste Asset Management GmbH	−198,139	23,566
Large RENAISSANCE TECHNOLOGIES LLC	−47,000	20,300
Small Privium Fund Management B.V.	−27,439	151,675
Large MARSHALL WACE, LLP	−18,196	232,919

Top New Positions

vs Mar 31, 2026

Institution	Acquired	Value (USD)
Mega Jupiter Topco LLC	200,905	$2,093,430
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP	150,100	$1,564,042
Mid ADAR1 Capital Management, LLC	98,877	$1,030,298
Small DIADEMA PARTNERS LP	87,057	$907,133
Mega BANK OF AMERICA CORP /DE/	84,624	$881,782

Top Sold-Out Positions

vs Mar 31, 2026

Institution	Previously Held	Last Value (USD)
Mega CITADEL ADVISORS LLC	110,128	$677,286
Large JACOBS LEVY EQUITY MANAGEMENT, INC	101,534	$624,434
Small Diametric Capital, LP	38,069	$234,124
Large Man Group plc	23,699	$145,748
Mega AMERIPRISE FINANCIAL INC	13,416	$82,508

Filter: New 26 Increased 44 Reduced 12 Sold out 13 Unchanged 14

Showing 99 of 99

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

Squarepoint Ops LLC

$23,493,129

25.46%

2,254,619

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

Manager	Shares	Value (USD)	% of position	Discretion
Squarepoint Capital LLP	2,254,619	$23,493,129	100.0%	Defined

BlackRock, Inc.

$8,536,467

9.25%

819,239

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	3,815	$39,752	0.5%	Sole
BlackRock Investment Management, LLC	38,115	$397,158	4.7%	Sole
BLACKROCK ADVISORS LLC	32,920	$343,026	4.0%	Sole
BlackRock Fund Advisors	495,952	$5,167,819	60.5%	Sole
BlackRock Institutional Trust Company, N.A.	247,444	$2,578,366	30.2%	Sole
BlackRock Investment Management (UK) Ltd.	961	$10,013	0.1%	Sole
Aperio Group, LLC	32	$333	0.0%	Sole

683 Capital Management, LLC

$6,773,000

7.34%

650,000

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

Manager	Shares	Value (USD)	% of position	Discretion
683 Capital Partners, LP	650,000	$6,773,000	100.0%	Defined

VANGUARD CAPITAL MANAGEMENT LLC

$5,791,675

6.28%

555,823

FMR LLC

$3,839,030

4.16%

368,429

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	368,429	$3,839,030	100.0%	Defined

GEODE CAPITAL MANAGEMENT, LLC

$3,714,989

4.03%

356,525

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	58,895	$613,685	16.5%	Defined
Held directly	297,630	$3,101,304	83.5%	Defined

AQR CAPITAL MANAGEMENT LLC

$3,714,268

4.02%

356,456

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

Manager	Shares	Value (USD)	% of position	Discretion
KEB ASSET MANAGEMENT, LLC	11	$114	0.0%	Other
RF&L WEALTH MANAGEMENT, LLC	8	$83	0.0%	Other
Prism Planning Partners LLC	99	$1,031	0.0%	Other
Compound Planning, Inc.	4	$41	0.0%	Other
Arax Advisory Partners	6,247	$65,093	1.8%	Other
HALBERT HARGROVE GLOBAL ADVISORS, LLC	1,550	$16,151	0.4%	Other
Stokes Family Office, LLC	534	$5,564	0.1%	Other
Held directly	348,003	$3,626,191	97.6%	Defined

MILLENNIUM MANAGEMENT LLC

$3,229,022

3.50%

309,887

TWO SIGMA INVESTMENTS, LP

$3,087,373

3.35%

296,293

STATE STREET CORP

$2,596,789

2.81%

249,212

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	249,212	$2,596,789	100.0%	Defined

MARSHALL WACE, LLP

$2,427,015

2.63%

232,919

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	232,919	$2,427,015	100.0%	Other

UBS Group AG

$2,174,101

2.36%

208,647

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	262	$2,730	0.1%	Defined
UBS AG	208,385	$2,171,371	99.9%	Defined

Jupiter Topco LLC

$2,093,430

2.27%

200,905

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

Manager	Shares	Value (USD)	% of position	Discretion
JANUS HENDERSON INVESTORS US LLC	200,905	$2,093,430	100.0%	Defined

Privium Fund Management B.V.

$1,580,453

1.71%

151,675

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$1,351,474

1.46%

129,700

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

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	129,700	$1,351,474	100.0%	Other

NORTHERN TRUST CORP

$1,101,372

1.19%

105,698

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	103,607	$1,079,584	98.0%	Defined
DWS INVESTMENT MANAGEMENT AMERICAS, INC joint	2,091	$21,788	2.0%	Other

ADAR1 Capital Management, LLC

$1,030,298

1.12%

98,877

VANGUARD FIDUCIARY TRUST CO

$957,118

1.04%

91,854

VANGUARD PORTFOLIO MANAGEMENT LLC

$909,843

0.99%

87,317

DIADEMA PARTNERS LP

$907,133

0.98%

87,057

BANK OF AMERICA CORP /DE/

$881,782

0.96%

84,624

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	84,624	$881,782	100.0%	Defined

Walleye Capital LLC

$852,647

0.92%

81,828

GOLDMAN SACHS GROUP INC

$839,560

0.91%

80,572

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

Manager	Shares	Value (USD)	% of position	Discretion
GOLDMAN SACHS ASSET MANAGEMENT, L.P.	80,572	$839,560	100.0%	Defined

Jump Financial, LLC

$696,056

0.75%

66,800

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	66,800	$696,056	100.0%	Defined

BNP PARIBAS ARBITRAGE, SA

$666,640

0.72%

63,977

Nuveen, LLC

$661,189

0.72%

63,454

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	12,764	$133,000	20.1%	Defined
TIAA CREF INVESTMENT MANAGEMENT LLC joint	22,160	$230,907	34.9%	Defined
TEACHERS ADVISORS, LLC joint	28,530	$297,282	45.0%	Defined

CM Management, LLC

$625,200

0.68%

60,000

Point72 Asset Management, L.P.

$454,593

0.49%

43,627

Trexquant Investment LP

$427,699

0.46%

41,046

BRIDGEWAY CAPITAL MANAGEMENT, LLC

$338,650

0.37%

32,500

CHARLES SCHWAB INVESTMENT MANAGEMENT INC

$335,190

0.36%

32,168

Bank of New York Mellon Corp

$331,521

0.36%

31,816

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

Manager	Shares	Value (USD)	% of position	Discretion
Mellon Investments Corporation	11,325	$118,006	35.6%	Defined
The Bank of New York Mellon	20,165	$210,119	63.4%	Defined
BNY Mellon, NA joint	325	$3,386	1.0%	Defined
Held directly	1	$10	0.0%	Defined

D. E. Shaw & Co., Inc.

$298,543

0.32%

28,651

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.	28,651	$298,543	100.0%	Defined

Atlatl Advisers LLC

$297,063

0.32%

28,509

ACADIAN ASSET MANAGEMENT LLC

$289,113

0.31%

27,746

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

Manager	Shares	Value (USD)	% of position	Discretion
Acadian Inc	27,746	$289,113	100.0%	Defined

IEQ CAPITAL, LLC

$264,834

0.29%

25,416

TWIN FOCUS CAPITAL PARTNERS, LLC

$260,500

0.28%

25,000

Erste Asset Management GmbH

$245,557

0.27%

23,566

Persistent Asset Partners Ltd

$231,230

0.25%

22,191

Miller Financial Services LLC

$230,730

0.25%

22,143

ALLIANCEBERNSTEIN L.P.

$230,438

0.25%

22,115

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

Manager	Shares	Value (USD)	% of position	Discretion
Equitable Holdings, Inc.	22,115	$230,438	100.0%	Defined

Ikarian Capital, LLC

$216,808

0.23%

20,807

Invesco Ltd.

$215,557

0.23%

20,687

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	1,592	$16,588	7.7%	Defined
Invesco Trust Co joint	5,137	$53,527	24.8%	Defined
Invesco Capital Management LLC	13,958	$145,442	67.5%	Defined

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$212,568

0.23%

20,400

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

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	20,400	$212,568	100.0%	Other

RENAISSANCE TECHNOLOGIES LLC

$211,526

0.23%

20,300

XTX Topco Ltd

$202,095

0.22%

19,395

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	19,395	$202,095	100.0%	Defined

Brevan Howard Capital Management LP

$201,783

0.22%

19,365

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

Manager	Shares	Value (USD)	% of position	Discretion
Brevan Howard US Investment Management, LP	19,365	$201,783	100.0%	Defined

Cerity Partners LLC

$175,555

0.19%

16,848

Mariner, LLC

$154,351

0.17%

14,813

JANE STREET GROUP, LLC

$141,712

0.15%

13,600

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	13,600	$141,712	100.0%	Defined

RHUMBLINE ADVISERS

$140,597

0.15%

13,493

DEUTSCHE BANK AG\

$135,418

0.15%

12,996

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	184	$1,917	1.4%	Defined
DWS Investments UK Ltd	12,812	$133,501	98.6%	Defined

SEI INVESTMENTS CO

$133,000

0.14%

12,764

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

Manager	Shares	Value (USD)	% of position	Discretion
SEI TRUST CO	12,764	$133,000	100.0%	Sole

WELLS FARGO & COMPANY/MN

$131,749

0.14%

12,644

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	11,111	$115,776	87.9%	Defined
WELLS FARGO ADVISORS FINANCIAL NETWORK, LLC	1,533	$15,973	12.1%	Defined

JANE STREET GROUP, LLC

$123,206

0.13%

11,824

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	11,824	$123,206	100.0%	Defined

JANE STREET GROUP, LLC

$112,536

0.12%

10,800

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	10,800	$112,536	100.0%	Defined

PRICE T ROWE ASSOCIATES INC /MD/

$112,098

0.12%

10,758

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	10,758	$112,098	100.0%	Defined

WEDBUSH SECURITIES INC

$109,410

0.12%

10,500

MORGAN STANLEY

$100,938

0.11%

9,687

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	236	$2,459	2.4%	Defined
MORGAN STANLEY & CO. LLC	3,550	$36,991	36.6%	Defined
MORGAN STANLEY CAPITAL SERVICES, LLC	5,901	$61,488	60.9%	Defined

Arax Advisory Partners

$67,469

0.07%

6,475

CITIGROUP INC

$63,249

0.07%

6,070

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	6,070	$63,249	100.0%	Defined

MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.

$62,988

0.07%

6,045

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	6,045	$62,988	100.0%	Defined

JPMORGAN CHASE & CO

$60,976

0.07%

5,852

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.	5,711	$59,507	97.6%	Defined
J.P. Morgan Securities plc	141	$1,469	2.4%	Defined

Russell Investments Group, Ltd.

$50,880

0.06%

4,883

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	4,883	$50,880	100.0%	Defined

BARCLAYS PLC

$49,223

0.05%

4,724

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

Manager	Shares	Value (USD)	% of position	Discretion
BARCLAYS BANK PLC	2,980	$31,051	63.1%	Defined
BARCLAYS CAPITAL INC.	1,744	$18,172	36.9%	Defined

UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC

$47,233

0.05%

4,533

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

Manager	Shares	Value (USD)	% of position	Discretion
UBS Group AG	4,533	$47,233	100.0%	Defined

NEW YORK STATE COMMON RETIREMENT FUND

$40,658

0.04%

3,902

Vanguard Global Advisers, LLC

$37,824

0.04%

3,630

Police & Firemen's Retirement System of New Jersey

$30,624

0.03%

2,939

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

Manager	Shares	Value (USD)	% of position	Discretion
Mellon Capital	2,939	$30,624	100.0%	Defined

Tower Research Capital LLC (TRC)

$21,715

0.02%

2,084

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

Manager	Shares	Value (USD)	% of position	Discretion
Latour Trading LLC (Latour)	2,084	$21,715	100.0%	Defined

Strategic Wealth Partners, Ltd.

$21,142

0.02%

2,029

NISA INVESTMENT ADVISORS, LLC

$16,672

0.02%

1,600

Integrated Wealth Concepts LLC

$16,276

0.02%

1,562

Legal & General Group Plc

$15,369

0.02%

1,475

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	1,475	$15,369	100.0%	Defined

North Star Investment Management Corp.

$11,295

0.01%

1,084

ALERUS FINANCIAL NA

$10,420

0.01%

1,000

Allworth Financial LP

$8,065

0.01%

774

ROYAL BANK OF CANADA

$7,960

0.01%

764

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

Manager	Shares	Value (USD)	% of position	Discretion
RBC CMA LTD.	391	$4,074	51.2%	Defined
RBC Capital Markets, LLC	373	$3,886	48.8%	Defined

Ameritas Investment Partners, Inc.

$7,377

0.01%

708

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

Manager	Shares	Value (USD)	% of position	Discretion
EATON VANCE MANAGEMENT	708	$7,377	100.0%	Other

SBI Securities Co., Ltd.

$5,720

0.01%

549

EverSource Wealth Advisors, LLC

$5,707

0.01%

548

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

Manager	Shares	Value (USD)	% of position	Discretion
BMSS Wesson Wealth Solutions, LLC	74	$770	13.5%	Sole
Held directly	474	$4,937	86.5%	Sole

Essential Partners LLC

$4,501

0.00%

432

OSAIC HOLDINGS, INC.

$3,146

0.00%

302

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

Manager	Shares	Value (USD)	% of position	Discretion
OSAIC WEALTH, INC.	302	$3,146	100.0%	Defined

Caitong International Asset Management Co., Ltd

$2,719

0.00%

261

Sterling Capital Management LLC

$2,479

0.00%

238

IFP Advisors, Inc

$2,209

0.00%

212

GAMMA Investing LLC

$2,136

0.00%

205

ROTHSCHILD INVESTMENT LLC

$1,604

0.00%

154

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM

$1,531

0.00%

147

Farther Finance Advisors, LLC

$1,406

0.00%

135

PNC FINANCIAL SERVICES GROUP, INC.

$1,292

0.00%

124

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

Manager	Shares	Value (USD)	% of position	Discretion
PNC Bank, National Association	124	$1,292	100.0%	Defined

True Wealth Design, LLC

$1,271

0.00%

122

Activest Wealth Management

$687

0.00%

SJS Investment Consulting Inc.

$218

0.00%

Quarry LP

$156

0.00%

Clearstead Advisors, LLC

$93

0.00%

JPL Wealth Management, LLC

$41

0.00%

Forum Finance Group S.A.

$33

0.00%

3,900

Parallel Advisors, LLC

$31

0.00%

103

Key facts CIK 1453687 CUSIP 816212302 13F (30d) 65 filings 65 filers Visit website Investor relations