Cartesian Therapeutics, Inc.
RNAC • NASDAQ
Cartesian Therapeutics, Inc. is a biotechnology company in the healthcare sector on NASDAQ, led by Carsten Brunn, Ph.D., with a market cap of $221.6M. As of Q3 2025, 23% of shares are held by 65 institutional investors, with FMR LLC as the largest holder at 8.29%.
CEOCarsten Brunn, Ph.D.
Market Cap$221.6M
Biotechnology
Healthcare
Employees38.0
Websitecartesiantherapeutics.com
Country
United States of America
Overview
Overview of institutional ownership in RNAC as of Q3 2025 with a market cap of $265.7M
All Institutions
- Institutions
- 65
- Value Held
- $60.9M
- Shares Held
- 6.0M
- Avg Position
- $936.9K
- Median Position
- $80.6K
Hedge Funds
- Hedge Funds
- 7
- Value Held
- $4.8M
- Shares Held
- 471.1K
- Avg Position
- $687.8K
- Median Position
- $306.6K
Ownership Breakdown
Based on market cap of $265.7M as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.
Biggest Investors
Institutions with the largest positions in RNAC as of Q3 2025
| Institution | Position Value |
|---|---|
 FMR LLC Institution | $22.0M 0.00% of portfolio |
B BlackRock, Inc. Institution | $6.6M 0.00% of portfolio |
S Siren, L.L.C. Institution | $5.8M 0.24% of portfolio |
 VANGUARD GROUP INC Institution | $5.3M 0.00% of portfolio |
 MPM Oncology Impact Management LP Institution | $3.9M 0.64% of portfolio |
E Erste Asset Management GmbH Institution | $2.6M 0.02% of portfolio |
 GEODE CAPITAL MANAGEMENT LLC ETF Provider | $2.5M 0.00% of portfolio |
6 683 Capital Management, LLC Hedge Fund•Long/Short | $2.4M 0.22% of portfolio |
 STATE STREET CORP Institution | $2.0M 0.00% of portfolio |
 NORTHERN TRUST CORP Institution | $933.0K 0.00% of portfolio |
Net Capital Flow
Institutional buying and selling activity for RNAC in Q3 2025
- Traded
- −$4.4M
- Buyers
- 27
- Sellers
- 24
- Total Bought
- +$2.0M
- Total Sold
- −$6.4M
- Avg Position
- $870.0K
Biggest Buyers
| Institution | Net Bought |
|---|---|
 GSA CAPITAL PARTNERS LLP Hedge Fund•Quant | +$454.7K +44.5K shares |
 MILLENNIUM MANAGEMENT LLC Hedge Fund•Multi-Strategy | +$259.1K +25.4K shares |
B BRIDGEWAY CAPITAL MANAGEMENT INC Long Only Manager | +$255.5K +25.0K shares |
VANGUARD GROUP INC Institution | +$248.9K +24.4K shares |
GEODE CAPITAL MANAGEMENT LLC ETF Provider | +$234.1K +22.9K shares |
R ROYAL BANK OF CANADA Institution | +$183.2K +17.9K shares |
6 683 Capital Management, LLC Hedge Fund•Long/Short | +$112.4K +11.0K shares |
NORTHERN TRUST CORP Institution | +$85.3K +8.3K shares |
STATE STREET CORP Institution | +$34.7K +3.4K shares |
 Quest Partners LLC Hedge Fund•Quant Macro | +$27.8K +2.7K shares |
Biggest Sellers
| Institution | Net Sold |
|---|---|
MPM Oncology Impact Management LP Institution | −$3.1M −306.0K shares |
FMR LLC Institution | −$1.8M −178.3K shares |
 CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy | −$514.6K −50.4K shares |
D DELPHI FINANCIAL GROUP INC/DE Institution | −$228.9K −22.0K shares |
 RENAISSANCE TECHNOLOGIES LLC Hedge Fund•Quant | −$202.6K −19.5K shares |
 BARCLAYS PLC Institution | −$131.2K −12.8K shares |
 JACOBS LEVY EQUITY MANAGEMENT, INC Hedge Fund•Quant | −$115.6K −11.3K shares |
 MORGAN STANLEY RIA/Wealth | −$104.6K −10.2K shares |
B BlackRock, Inc. Institution | −$46.0K −4.5K shares |
 Mirae Asset Global Investments Co., Ltd. Long Only Manager | −$37.9K −3.7K shares |
Entry and Exit Activity
Institutions that initiated new positions or completely exited RNAC in Q3 2025
- New Positions
- 2
- New Value
- $849.0
- Exited Positions
- 4
- Exited Value
- $432.0K
New Positions
| Institution | Position Value |
|---|---|
O Optiver Holding B.V. Institution | $818.0 80.0 shares |
 Larson Financial Group LLC RIA/Wealth | $31.0 3.0 shares |
Exited Positions
| Institution | Previous Position |
|---|---|
D DELPHI FINANCIAL GROUP INC/DE Institution | $228.9K 22.0K shares |
RENAISSANCE TECHNOLOGIES LLC Hedge Fund•Quant | $202.6K 19.5K shares |
N NATIONAL BANK OF CANADA /FI/ Institution | $415.0 40.0 shares |
 Hanson McClain, Inc. RIA/Wealth | $156.0 15.0 shares |
Options Activity
Institutions with the largest Call and Put options positions in RNAC as of Q3 2025
- Call Positions
- 2
- Call Value
- $854.4K
- Put Positions
- 1
- Put Value
- $169.7K
Call Positions
| Institution | Position Value |
|---|---|
 SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity | $690.9K 676.0 contracts |
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy | $163.5K 160.0 contracts |
Put Positions
| Institution | Position Value |
|---|---|
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity | $169.7K 166.0 contracts |
Most Committed Institutions
Institutions with RNAC as the highest % of their portfolio as of Q3 2025
| Institution | Portfolio Weight |
|---|---|
MPM Oncology Impact Management LP Institution | 0.64% $3.9M |
S Siren, L.L.C. Institution | 0.24% $5.8M |
6 683 Capital Management, LLC Hedge Fund•Long/Short | 0.22% $2.4M |
M Miller Financial Services LLC RIA/Wealth | 0.14% $119.0K |
GSA CAPITAL PARTNERS LLP Hedge Fund•Quant | 0.08% $879.9K |
 Ikarian Capital, LLC Hedge Fund•Event Driven | 0.05% $226.5K |
V Virtus Investment Advisers, Inc. Institution | 0.03% $113.6K |
T TWIN FOCUS CAPITAL PARTNERS, LLC Family Office | 0.03% $199.3K |
E Erste Asset Management GmbH Institution | 0.02% $2.6M |
F Freestone Capital Holdings, LLC RIA/Wealth | 0.01% $264.9K |
Hedge Fund Spotlight
Discover hedge funds investing in RNAC
Quest Partners LLC
Hedge Fund • Quant Macro
Portfolio ManagerNigol (Nmn) Koulajian
- Portfolio Value
- $1.5B
- Positions
- 2,240
- Last Reported
- Q3 2025
Sector Allocation
Position in Cartesian Therapeutics, Inc.
- Market Value
- $70.8K
- Shares Held
- 6.9K
- Portfolio Weight
- 0.00%
- Owned Since
- 2025-Q1
| Top Holding | Sector | Market Value | Weight |
|---|---|---|---|
ETF ETF | $39.0M | 2.54% | |
ETF ETF | $6.5M | 0.42% | |
ETF ETF | $6.5M | 0.42% |
