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Equibles

RNAC

Cartesian Therapeutics, Inc.

Company with tickers: RNAC

CIK
1453687
CUSIP
816212302
Shares Outstanding
29,381,514
13F Activity (30d)
36 filings 34 filers

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.

Holders: 74
Total Value: $32,280,728
Total Shares: 5,248,905

Institutional Ownership Trend

15 quarters

Holder Concentration

Across 74 13F filers
Top Holder
42.6%
Mar 2024 → Mar 2026 · range 14.9% – 64.7%
of institutional value
Top 5
66.5%
Mar 2024 → Mar 2026 · range 54.5% – 100.0%
of institutional value
Top 10
83.8%
Mar 2024 → Mar 2026 · range 81.6% – 100.0%
of institutional value
HHI
2,046
Mar 2024 → Mar 2026 · range 819 – 5,059
Moderately concentrated

Quarterly Activity

vs Mar 9, 2026
New
73
Increased
1
Decreased
0
Sold Out
0
Unchanged
0
Holder count: +73
Institutional value: +62.0%
Shares held: +137.5%

Top Buyers

vs Mar 9, 2026
Institution Added Now Holds Open
Large Squarepoint Ops LLC +28,885 2,238,486

Top Sellers

vs Mar 9, 2026
No qualifying movers this quarter.

Top New Positions

vs Mar 9, 2026
Institution Acquired Value (USD) Open
Mega VANGUARD CAPITAL MANAGEMENT LLC 407,597 $2,506,721
Mid 683 Capital Management, LLC 330,000 $2,029,500
Mega GEODE CAPITAL MANAGEMENT, LLC 263,694 $1,621,718
Large MARSHALL WACE, LLP 251,115 $1,544,356
Large Erste Asset Management GmbH 221,705 $1,363,485

Top Sold-Out Positions

vs Mar 9, 2026
No fully closed positions this quarter.
Filter: New 73 Increased 1 Reduced 0 Sold out 0 Unchanged 0
Showing 74 of 74
All Common Calls Puts
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Holder Value (USD) % of 13F Shares Open
Large Squarepoint Ops LLC $13,766,688 42.65% 2,238,486
Mega VANGUARD CAPITAL MANAGEMENT LLC $2,506,721 7.77% 407,597
Mid 683 Capital Management, LLC $2,029,500 6.29% 330,000
Mega GEODE CAPITAL MANAGEMENT, LLC $1,621,718 5.02% 263,694
Large MARSHALL WACE, LLP $1,544,356 4.78% 251,115
Large Erste Asset Management GmbH $1,363,485 4.22% 221,705
Mega STATE STREET CORP $1,232,072 3.82% 200,337
Small Privium Fund Management B.V. $1,101,551 3.41% 179,114
Mega TWO SIGMA INVESTMENTS, LP $1,028,974 3.19% 167,313
Mega UBS Group AG $841,565 2.61% 136,840
Mega CITADEL ADVISORS LLC $677,286 2.10% 110,128
Large JACOBS LEVY EQUITY MANAGEMENT, INC $624,434 1.93% 101,534
Mega NORTHERN TRUST CORP Bank $565,750 1.75% 91,992
Mega VANGUARD FIDUCIARY TRUST CO Bank $432,320 1.34% 70,296
Large RENAISSANCE TECHNOLOGIES LLC $413,895 1.28% 67,300
Small Diametric Capital, LP $234,124 0.73% 38,069
Mega Nuveen, LLC $230,323 0.71% 37,451
Mega GOLDMAN SACHS GROUP INC $190,200 0.59% 30,927
Mid XTX Topco Ltd $184,838 0.57% 30,055
Mid BRIDGEWAY CAPITAL MANAGEMENT, LLC $153,750 0.48% 25,000
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $153,313 0.47% 24,929
Large Man Group plc $145,748 0.45% 23,699
Large ACADIAN ASSET MANAGEMENT LLC $144,426 0.45% 23,484
Micro Miller Financial Services LLC $136,179 0.42% 22,143
Small TWIN FOCUS CAPITAL PARTNERS, LLC $119,925 0.37% 19,500
Large PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO Pension $79,950 0.25% 13,000
Mega ALLIANCEBERNSTEIN L.P. $78,504 0.24% 12,765
Large SEI INVESTMENTS CO $78,498 0.24% 12,764
Mega RHUMBLINE ADVISERS $76,014 0.24% 12,360
Mid WEDBUSH SECURITIES INC Broker-Dealer $70,725 0.22% 11,500
Mega BNP PARIBAS ARBITRAGE, SA $61,192 0.19% 9,950
Mega DEUTSCHE BANK AG\ Bank $49,912 0.15% 8,116
Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. Mutual Fund $32,305 0.10% 5,253
Large CWM, LLC $28,511 0.09% 4,636
Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC $27,877 0.09% 4,533
Mega JPMORGAN CHASE & CO $27,139 0.08% 4,413
Mega WELLS FARGO & COMPANY/MN $24,476 0.08% 3,980
Large NEW YORK STATE COMMON RETIREMENT FUND Pension $23,997 0.07% 3,902
Small Forum Finance Group S.A. $23,985 0.07% 3,900
Large Mirae Asset Global Investments Co., Ltd. $22,847 0.07% 3,715
Mega Vanguard Global Advisers, LLC $22,324 0.07% 3,630
Mega BARCLAYS PLC $20,337 0.06% 3,307
Large Police & Firemen's Retirement System of New Jersey Pension $18,074 0.06% 2,939
Small Strategic Wealth Partners, Ltd. $12,478 0.04% 2,029
Mid Tower Research Capital LLC (TRC) $10,744 0.03% 1,747
Small ALERUS FINANCIAL NA $6,150 0.02% 1,000
Mega Legal & General Group Plc $5,627 0.02% 915
Large Russell Investments Group, Ltd. $5,221 0.02% 849
Mid GAMMA Investing LLC $4,993 0.02% 812
Mid Ameritas Investment Partners, Inc. $4,354 0.01% 708
Small Essential Partners LLC $3,671 0.01% 597
Large CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Pension $3,487 0.01% 567
Mega CITIGROUP INC $3,044 0.01% 495
Mid Sterling Capital Management LLC $1,924 0.01% 313
Large OSAIC HOLDINGS, INC. $1,857 0.01% 302
Mid EverSource Wealth Advisors, LLC $1,555 0.00% 253
Small Physician Wealth Advisors, Inc. $885 0.00% 144
Mid Allworth Financial LP $774 0.00% 126
Mid Optiver Holding B.V. $639 0.00% 104
Mid Parallel Advisors, LLC $633 0.00% 103
Mega ROYAL BANK OF CANADA Bank $429 0.00% 70
Small Activest Wealth Management $405 0.00% 66
Mid IFP Advisors, Inc $381 0.00% 62
Mid Farther Finance Advisors, LLC $350 0.00% 57
Mid SBI Securities Co., Ltd. Broker-Dealer $301 0.00% 49
Mid ROTHSCHILD INVESTMENT LLC $246 0.00% 40
Mega PNC FINANCIAL SERVICES GROUP, INC. $221 0.00% 36
Micro True Wealth Design, LLC $172 0.00% 28
Mid MAI Capital Management $147 0.00% 24
Mid Arax Advisory Partners $116 0.00% 19
Small Root Financial Partners, LLC $86 0.00% 14
Small Caitong International Asset Management Co., Ltd $12 0.00% 2
Small SJS Investment Consulting Inc. $12 0.00% 2
Micro Wealth Preservation Advisors, LLC $6 0.00% 1

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