RNAC · Cartesian Therapeutics, Inc. · Holdings
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.
Institutional Ownership Trend
Holder Concentration
Across 95 13F filersWho Holds RNAC
Last 8 quarters through Sep 30, 2026 (filing window open)Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.
Jun 30, 2026, the newest closed quarter: 94 filers, like-for-like change +21.5%; actively managed books +17.0%; index-like books +35.2%.
| Holder type | Share | Filers | Change |
|---|---|---|---|
| Registered adviser | 63.5% | 46 | +29.5% |
| Exempt adviser | 3.2% | 3 | +9.3% |
| Adviser | 0.3% | 2 | +62.3% |
| Bank | 8.2% | 11 | +51.9% |
| Benefit plan | 0.0% | 1 | -98.9% |
| Non-US | 1.2% | 4 | -57.8% |
| Holding company | 14.9% | 6 | -11.4% |
| Insurer | 0.0% | 0 | — |
| Unknown | 8.8% | 21 | +72.6% |
| Style | Share | Filers | Change |
|---|---|---|---|
| Index-like | 27.5% | 17 | +35.2% |
| Systematic-like | 8.5% | 6 | +24.9% |
| Concentrated | 3.1% | 10 | +33.6% |
| Diversified active | 60.8% | 60 | +15.3% |
| Unknown | 0.0% | 1 | 0.0% |
| Not measured | 0.0% | 0 | — |
| Turnover | Share | Filers | Change |
|---|---|---|---|
| Low turnover | 28.3% | 52 | +9.3% |
| Medium turnover | 20.1% | 18 | +44.1% |
| High turnover | 40.7% | 18 | +12.6% |
| Unknown | 10.9% | 6 | +72.8% |
| Not measured | 0.0% | 0 | — |
| Holding horizon | Share | Filers | Change |
|---|---|---|---|
| Short horizon | 12.7% | 11 | +91.1% |
| Medium horizon | 15.8% | 19 | +54.0% |
| Long horizon | 56.5% | 59 | +0.3% |
| Unknown | 15.0% | 5 | +65.9% |
| Not measured | 0.0% | 0 | — |
| 13F book size | Share | Filers | Change |
|---|---|---|---|
| Under $1B | 4.9% | 16 | +48.5% |
| $1B to $10B | 9.7% | 18 | +107.9% |
| $10B to $100B | 30.4% | 20 | -2.5% |
| $100B or more | 55.1% | 40 | +27.4% |
| Not measured | 0.0% | 0 | — |
| Client base | Share | Filers | Change |
|---|---|---|---|
| Individuals and high net worth | 1.6% | 20 | +252.9% |
| Pooled investment vehicles | 44.5% | 11 | +20.0% |
| Registered funds and BDCs | 12.4% | 6 | +37.5% |
| Pension and profit sharing plans | 0.0% | 1 | new |
| Insurance companies | 0.0% | 1 | 0.0% |
| Governments and sovereign funds | 0.6% | 2 | +341.3% |
| Other investment advisers | 0.0% | 1 | -74.8% |
| Diversified | 4.4% | 4 | +88.7% |
| Unknown | 36.5% | 48 | +9.6% |
| Private funds | Share | Filers | Change |
|---|---|---|---|
| Hedge funds | 52.2% | 16 | +24.1% |
| Private equity funds | 0.2% | 2 | new |
| Venture capital funds | 0.0% | 1 | +285.0% |
| Real estate funds | 0.1% | 2 | +2272.6% |
| Securitized asset funds | 0.1% | 1 | 0.0% |
| Other private funds | 1.1% | 5 | +73.4% |
| Mixed private funds | 0.3% | 1 | +73.2% |
| No private funds | 12.8% | 21 | +41.9% |
| Private funds, type not stated | 0.0% | 0 | — |
| Unknown | 33.3% | 45 | +9.7% |
| Location | Share | Filers | Change |
|---|---|---|---|
| United States | 91.8% | 79 | +27.0% |
| Outside the US | 8.2% | 15 | -18.4% |
The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.
How the mix is measured
Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.
Excluded 1 holder with no observed 2026-06-30 13F. Compared across CIK changes: JANUS HENDERSON GROUP PLC continues as Jupiter Topco LLC.
Conviction and Crowding
94 13F filers, quarter ended Jun 30, 2026Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.
Managers in the top fifth by current three-year FundScore alpha were net buyers of $644,916 (1 buying, 0 selling).
Estimated Holder Cost Basis
Quarter ended Jun 30, 2026, on that quarter's share basisEstimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.
Estimated cost covers 65.6% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.
Shared Holders
Companies RNAC's active holders also own, quarter ended Jun 30, 2026| # | Company | Shared holders |
|---|---|---|
| 1 | MGTX MeiraGTx Holdings plc | 3 |
| 2 | PRQR ProQR Therapeutics N.V. | 3 |
| 3 | BMRN Biomarin Pharmaceutical Inc | 3 |
| 4 | MRNA Moderna, Inc. | 3 |
| 5 | SHOP Shopify Inc. | 3 |
| 6 | COF Capital One Financial Corp | 3 |
| 7 | CRWD CrowdStrike Holdings, Inc. | 3 |
| 8 | AMZN Amazon Com Inc | 5 |
| 9 | UNH Unitedhealth Group Inc | 3 |
| 10 | RTX RTX Corp | 3 |
Shareholder Targets
13F filers that own its peers but not RNAC, quarter ended Jun 30, 2026Found through its holder-overlap peers: MGTX, PRQR, BMRN, MRNA, SHOP, COF, CRWD, AMZN, UNH, RTX, GOOGL, PG, AMD, XOM, JNJ, BRK-B, JPM, AAPL, MSFT. 7,229 filers in all.
| # | Filer | In peers | Largest peers |
|---|---|---|---|
| 1 | NORGES BANK Non-US, Index-like | $257,444,581,082 17 held | GOOGL, AAPL, MSFT |
| 2 | Capital Research Global Investors Adviser, Diversified active | $154,955,668,095 15 held | GOOGL, MSFT, AMZN |
| 3 | Capital World Investors Adviser, Diversified active | $127,427,105,572 15 held | GOOGL, MSFT, AMZN |
| 4 | Berkshire Hathaway Inc Insurer, Concentrated | $104,316,245,302 3 held | AAPL, GOOGL, COF |
| 5 | FRANKLIN RESOURCES INC Adviser, Diversified active | $101,308,985,537 18 held | AAPL, MSFT, GOOGL |
| 6 | Amundi Holding company, Index-like | $97,562,613,596 17 held | AAPL, GOOGL, MSFT |
| 7 | WELLINGTON MANAGEMENT GROUP LLP Holding company, Diversified active | $95,373,087,996 17 held | GOOGL, MSFT, AAPL |
| 8 | Capital International Investors Adviser, Diversified active | $86,935,756,955 13 held | GOOGL, MSFT, AAPL |
| 9 | DIMENSIONAL FUND ADVISORS LP Registered adviser, Diversified active | $77,033,437,473 17 held | AAPL, MSFT, GOOGL |
| 10 | Fisher Asset Management, LLC Adviser, Diversified active | $74,248,335,143 17 held | AAPL, GOOGL, MSFT |
Fund Ownership of RNAC by Fund Type
Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026Index funds and index ETFs hold 4.89% of shares outstanding.
| Fund type | Of shares outstanding | Shares |
|---|---|---|
| Index funds | 1.22% | 370,397 |
| Index ETFs | 3.67% | 1,109,310 |
| Active ETFs | 0.00% | 0 |
| Active funds | 1.63% | 492,049 |
| Unclassified | 0.06% | 18,500 |
| All registered funds | 6.58% | 1,990,256 |
How fund types are measured
Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Large Squarepoint Ops LLC Registered adviser | $23,493,129 | 25.52% | 2,254,619 | Shares | 2026-08-14 | |
| Mega BlackRock, Inc. Holding company | $8,536,467 | 9.27% | 819,239 | Shares | 2026-08-07 | |
| Mid 683 Capital Management, LLC Registered adviser | $6,773,000 | 7.36% | 650,000 | Shares | 2026-08-14 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC Registered adviser | $5,791,675 | 6.29% | 555,823 | Shares | 2026-08-13 | |
| Mega FMR LLC Holding company | $3,839,030 | 4.17% | 368,429 | Shares | 2026-08-13 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC Registered adviser | $3,714,989 | 4.04% | 356,525 | Shares | 2026-08-12 | |
| Mega AQR CAPITAL MANAGEMENT LLC Registered adviser | $3,714,268 | 4.04% | 356,456 | Shares | 2026-08-14 | |
| Mega MILLENNIUM MANAGEMENT LLC Registered adviser | $3,229,022 | 3.51% | 309,887 | Shares | 2026-08-14 | |
| Mega TWO SIGMA INVESTMENTS, LP Registered adviser | $3,087,373 | 3.35% | 296,293 | Shares | 2026-08-14 | |
| Mega STATE STREET CORP Bank | $2,596,789 | 2.82% | 249,212 | Shares | 2026-09-22 | |
| Mega MARSHALL WACE, LLP Exempt adviser | $2,427,015 | 2.64% | 232,919 | Shares | 2026-08-13 | |
| Mega UBS Group AG Bank | $2,174,101 | 2.36% | 208,647 | Shares | 2026-08-13 | |
| Mega Jupiter Topco LLC | $2,093,430 | 2.27% | 200,905 | Shares | 2026-08-14 | |
| Small Privium Fund Management B.V. | $1,580,453 | 1.72% | 151,675 | Shares | 2026-08-07 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $1,351,474 | 1.47% | 129,700 | Call | 2026-08-14 | |
| Mega NORTHERN TRUST CORP Bank | $1,101,372 | 1.20% | 105,698 | Shares | 2026-08-13 | |
| Mid ADAR1 Capital Management, LLC Registered adviser | $1,030,298 | 1.12% | 98,877 | Shares | 2026-08-14 | |
| Mega VANGUARD FIDUCIARY TRUST CO | $957,118 | 1.04% | 91,854 | Shares | 2026-08-13 | |
| Mega VANGUARD PORTFOLIO MANAGEMENT LLC Registered adviser | $909,843 | 0.99% | 87,317 | Shares | 2026-08-13 | |
| Small DIADEMA PARTNERS LP Registered adviser | $907,133 | 0.99% | 87,057 | Shares | 2026-08-14 | |
| Mega BANK OF AMERICA CORP /DE/ Bank | $881,782 | 0.96% | 84,624 | Shares | 2026-08-14 | |
| Large Walleye Capital LLC Registered adviser | $852,647 | 0.93% | 81,828 | Shares | 2026-08-03 | |
| Mega GOLDMAN SACHS GROUP INC Holding company | $839,560 | 0.91% | 80,572 | Shares | 2026-08-14 | |
| Large Jump Financial, LLC | $696,056 | 0.76% | 66,800 | Shares | 2026-08-13 | |
| Mega BNP PARIBAS ARBITRAGE, SA Non-US | $666,640 | 0.72% | 63,977 | Shares | 2026-08-13 | |
| Mega Nuveen, LLC | $661,189 | 0.72% | 63,454 | Shares | 2026-08-11 | |
| Small CM Management, LLC | $625,200 | 0.68% | 60,000 | Shares | 2026-08-13 | |
| Large Point72 Asset Management, L.P. Registered adviser | $454,593 | 0.49% | 43,627 | Shares | 2026-08-14 | |
| Large Trexquant Investment LP Registered adviser | $427,699 | 0.46% | 41,046 | Shares | 2026-08-14 | |
| Mid BRIDGEWAY CAPITAL MANAGEMENT, LLC Registered adviser | $338,650 | 0.37% | 32,500 | Shares | 2026-08-14 | |
| Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC Registered adviser | $335,190 | 0.36% | 32,168 | Shares | 2026-08-14 | |
| Mega Bank of New York Mellon Corp Bank | $331,521 | 0.36% | 31,816 | Shares | 2026-08-06 | |
| Mega D. E. Shaw & Co., Inc. | $298,543 | 0.32% | 28,651 | Shares | 2026-08-14 | |
| Large ACADIAN ASSET MANAGEMENT LLC | $289,113 | 0.31% | 27,746 | Shares | 2026-08-13 | |
| Large IEQ CAPITAL, LLC Registered adviser | $264,834 | 0.29% | 25,416 | Shares | 2026-08-11 | |
| Small TWIN FOCUS CAPITAL PARTNERS, LLC Registered adviser | $260,500 | 0.28% | 25,000 | Shares | 2026-07-28 | |
| Large Erste Asset Management GmbH Non-US | $245,557 | 0.27% | 23,566 | Shares | 2026-07-28 | |
| Small Persistent Asset Partners Ltd Exempt adviser | $231,230 | 0.25% | 22,191 | Shares | 2026-08-07 | |
| Mega ALLIANCEBERNSTEIN L.P. Registered adviser | $230,438 | 0.25% | 22,115 | Shares | 2026-08-14 | |
| Small Ikarian Capital, LLC Registered adviser | $216,808 | 0.24% | 20,807 | Shares | 2026-08-14 | |
| Mega Invesco Ltd. Adviser | $215,557 | 0.23% | 20,687 | Shares | 2026-08-14 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $212,568 | 0.23% | 20,400 | Put | 2026-08-14 | |
| Large RENAISSANCE TECHNOLOGIES LLC Registered adviser | $211,526 | 0.23% | 20,300 | Shares | 2026-08-13 | |
| Small Atlatl Advisers LLC Registered adviser | $205,549 | 0.22% | 28,509 | Shares | 2026-10-22 | |
| Mid XTX Topco Ltd | $202,095 | 0.22% | 19,395 | Shares | 2026-08-14 | |
| Large Brevan Howard Capital Management LP Exempt adviser | $201,783 | 0.22% | 19,365 | Shares | 2026-08-14 | |
| Large Cerity Partners LLC Registered adviser | $175,555 | 0.19% | 16,848 | Shares | 2026-08-14 | |
| Small Miller Financial Services LLC | $159,413 | 0.17% | 22,110 | Shares | 2026-10-20 | |
| Large Mariner, LLC Registered adviser | $154,351 | 0.17% | 14,813 | Shares | 2026-08-13 | |
| Mega JANE STREET GROUP, LLC | $141,712 | 0.15% | 13,600 | Call | 2026-08-14 | |
| Mega RHUMBLINE ADVISERS Registered adviser | $140,597 | 0.15% | 13,493 | Shares | 2026-08-12 | |
| Mega DEUTSCHE BANK AG\ Non-US | $135,418 | 0.15% | 12,996 | Shares | 2026-08-07 | |
| Mega SEI INVESTMENTS CO Holding company | $133,000 | 0.14% | 12,764 | Shares | 2026-08-14 | |
| Mega WELLS FARGO & COMPANY/MN Bank | $131,749 | 0.14% | 12,644 | Shares | 2026-08-14 | |
| Mega JANE STREET GROUP, LLC | $123,206 | 0.13% | 11,824 | Shares | 2026-08-14 | |
| Mega JANE STREET GROUP, LLC | $112,536 | 0.12% | 10,800 | Put | 2026-08-14 | |
| Mega PRICE T ROWE ASSOCIATES INC /MD/ Registered adviser | $112,098 | 0.12% | 10,758 | Shares | 2026-08-14 | |
| Mega MORGAN STANLEY Holding company | $100,938 | 0.11% | 9,687 | Shares | 2026-08-13 | |
| Mid WEDBUSH SECURITIES INC Registered adviser | $75,705 | 0.08% | 10,500 | Shares | 2026-10-22 | |
| Large Arax Advisory Partners Registered adviser | $67,469 | 0.07% | 6,475 | Shares | 2026-08-10 | |
| Mega CITIGROUP INC Bank | $63,249 | 0.07% | 6,070 | Shares | 2026-08-03 | |
| Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $62,988 | 0.07% | 6,045 | Shares | 2026-08-14 | |
| Mega JPMORGAN CHASE & CO Bank | $60,976 | 0.07% | 5,852 | Shares | 2026-08-12 | |
| Mega Russell Investments Group, Ltd. | $50,880 | 0.06% | 4,883 | Shares | 2026-08-06 | |
| Mega BARCLAYS PLC Bank | $49,223 | 0.05% | 4,724 | Shares | 2026-08-14 | |
| Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC Registered adviser | $47,233 | 0.05% | 4,533 | Shares | 2026-08-13 | |
| Large NEW YORK STATE COMMON RETIREMENT FUND | $40,658 | 0.04% | 3,902 | Shares | 2026-07-29 | |
| Mega Vanguard Global Advisers, LLC Registered adviser | $37,824 | 0.04% | 3,630 | Shares | 2026-08-13 | |
| Large Police & Firemen's Retirement System of New Jersey | $30,624 | 0.03% | 2,939 | Shares | 2026-07-23 | |
| Mid Tower Research Capital LLC (TRC) | $21,715 | 0.02% | 2,084 | Shares | 2026-08-11 | |
| Mid Strategic Wealth Partners, Ltd. Registered adviser | $21,142 | 0.02% | 2,029 | Shares | 2026-08-12 | |
| Mega Legal & General Group Plc | $15,369 | 0.02% | 1,475 | Shares | 2026-08-14 | |
| Mid North Star Investment Management Corp. Adviser | $11,295 | 0.01% | 1,084 | Shares | 2026-07-28 | |
| Mid ALERUS FINANCIAL NA | $10,420 | 0.01% | 1,000 | Shares | 2026-08-14 | |
| Large Allworth Financial LP | $8,065 | 0.01% | 774 | Shares | 2026-08-11 | |
| Mega ROYAL BANK OF CANADA Bank | $7,960 | 0.01% | 764 | Shares | 2026-08-14 | |
| Mid Ameritas Investment Partners, Inc. Registered adviser | $7,377 | 0.01% | 708 | Shares | 2026-08-13 | |
| Mid GAMMA Investing LLC Registered adviser | $5,962 | 0.01% | 827 | Shares | 2026-10-08 | |
| Mid EverSource Wealth Advisors, LLC Registered adviser | $5,707 | 0.01% | 548 | Shares | 2026-07-24 | |
| Mid SBI Securities Co., Ltd. Non-US | $3,958 | 0.00% | 549 | Shares | 2026-10-22 | |
| Large OSAIC HOLDINGS, INC. Holding company | $3,146 | 0.00% | 302 | Shares | 2026-08-14 | |
| Small Caitong International Asset Management Co., Ltd | $2,719 | 0.00% | 261 | Shares | 2026-08-05 | |
| Small Essential Partners LLC Registered adviser | $2,444 | 0.00% | 339 | Shares | 2026-10-14 | |
| Mid Sterling Capital Management LLC Registered adviser | $2,018 | 0.00% | 280 | Shares | 2026-10-22 | |
| Large Farther Finance Advisors, LLC Registered adviser | $1,737 | 0.00% | 241 | Shares | 2026-10-08 | |
| Mid ROTHSCHILD INVESTMENT LLC Registered adviser | $1,604 | 0.00% | 154 | Shares | 2026-08-06 | |
| Mega CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Benefit plan | $1,531 | 0.00% | 147 | Shares | 2026-08-24 | |
| Mega PNC FINANCIAL SERVICES GROUP, INC. Bank | $1,292 | 0.00% | 124 | Shares | 2026-08-07 | |
| Mid IFP Advisors, Inc Registered adviser | $742 | 0.00% | 103 | Shares | 2026-10-16 | |
| Small True Wealth Design, LLC Registered adviser | $569 | 0.00% | 79 | Shares | 2026-10-13 | |
| Small Activest Wealth Management Registered adviser | $475 | 0.00% | 66 | Shares | 2026-10-15 | |
| Mid Root Financial Partners, LLC Registered adviser | $439 | 0.00% | 61 | Shares | 2026-10-21 | |
| Small SJS Investment Consulting Inc. Registered adviser | $218 | 0.00% | 21 | Shares | 2026-07-22 | |
| Mid Quarry LP | $156 | 0.00% | 15 | Shares | 2026-08-14 | |
| Large Clearstead Advisors, LLC Registered adviser | $93 | 0.00% | 9 | Shares | 2026-08-06 | |
| Small JPL Wealth Management, LLC Registered adviser | $41 | 0.00% | 4 | Shares | 2026-08-14 | |
| Micro Forum Finance Group S.A. Registered adviser | $33 | 0.00% | 3,900 | Shares | 2026-08-14 | |
| Mid Parallel Advisors, LLC Registered adviser | $31 | 0.00% | 103 | Shares | 2026-08-05 |