CGEM · Cullinan 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 184 13F filersWho Holds CGEM
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: 183 filers, like-for-like change +9.3%; actively managed books +6.5%; index-like books +19.5%.
| Holder type | Share | Filers | Change |
|---|---|---|---|
| Registered adviser | 49.8% | 87 | +11.4% |
| Exempt adviser | 0.2% | 3 | -93.1% |
| Adviser | 16.0% | 6 | +17.2% |
| Bank | 8.1% | 14 | +29.5% |
| Insurer | 0.2% | 1 | +12.1% |
| Broker-dealer | 0.0% | 1 | +21.5% |
| Benefit plan | 0.1% | 3 | +101.7% |
| Non-US | 0.7% | 7 | +0.2% |
| Holding company | 10.2% | 8 | +28.8% |
| Unknown | 14.7% | 53 | -0.4% |
| Style | Share | Filers | Change |
|---|---|---|---|
| Index-like | 23.4% | 25 | +19.5% |
| Systematic-like | 4.1% | 18 | -22.2% |
| Concentrated | 32.4% | 27 | -3.6% |
| Diversified active | 40.1% | 113 | +21.3% |
| Not measured | 0.0% | 0 | — |
| Unknown | 0.0% | 0 | — |
| Turnover | Share | Filers | Change |
|---|---|---|---|
| Low turnover | 33.4% | 86 | +19.2% |
| Medium turnover | 54.5% | 49 | +12.0% |
| High turnover | 5.7% | 33 | -38.3% |
| Unknown | 6.4% | 15 | +13.3% |
| Not measured | 0.0% | 0 | — |
| Holding horizon | Share | Filers | Change |
|---|---|---|---|
| Short horizon | 9.7% | 28 | -0.8% |
| Medium horizon | 42.4% | 31 | +8.7% |
| Long horizon | 44.3% | 110 | +21.6% |
| Unknown | 3.6% | 14 | -43.0% |
| Not measured | 0.0% | 0 | — |
| 13F book size | Share | Filers | Change |
|---|---|---|---|
| Under $1B | 18.7% | 29 | +5.5% |
| $1B to $10B | 36.4% | 48 | +4.0% |
| $10B to $100B | 6.7% | 52 | +4.5% |
| $100B or more | 38.2% | 54 | +18.0% |
| Not measured | 0.0% | 0 | — |
| Client base | Share | Filers | Change |
|---|---|---|---|
| Individuals and high net worth | 1.4% | 25 | -5.5% |
| Pooled investment vehicles | 31.1% | 26 | +3.6% |
| Registered funds and BDCs | 14.7% | 14 | +30.8% |
| Pension and profit sharing plans | 0.0% | 1 | -75.1% |
| Insurance companies | 0.1% | 3 | +51.1% |
| Governments and sovereign funds | 0.4% | 4 | -15.4% |
| Other investment advisers | 0.0% | 2 | +9.5% |
| Diversified | 2.0% | 12 | +52.5% |
| Unknown | 50.2% | 96 | +7.2% |
| Private funds | Share | Filers | Change |
|---|---|---|---|
| Hedge funds | 30.7% | 33 | +1.7% |
| Private equity funds | 2.6% | 7 | -36.9% |
| Venture capital funds | 0.0% | 1 | +33.9% |
| Real estate funds | 0.0% | 3 | +40.0% |
| Securitized asset funds | 0.1% | 1 | +24.4% |
| Other private funds | 7.8% | 8 | +41.0% |
| Mixed private funds | 0.5% | 3 | +19.8% |
| Private funds, type not stated | 0.1% | 3 | +93.5% |
| No private funds | 8.2% | 31 | +7.5% |
| Unknown | 50.0% | 93 | +14.9% |
| Location | Share | Filers | Change |
|---|---|---|---|
| United States | 97.5% | 151 | +13.8% |
| Outside the US | 2.5% | 32 | -57.0% |
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 2 holders with no observed 2026-03-31 13F and 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
183 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 sellers of $16,945,727 (0 buying, 1 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 90.9% 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 CGEM's active holders also own, quarter ended Jun 30, 2026| # | Company | Shared holders |
|---|---|---|
| 1 | RZLT Rezolute, Inc. | 6 |
| 2 | CNTX Context Therapeutics Inc. | 5 |
| 3 | ENGN enGene Therapeutics Inc. | 7 |
| 4 | SLDB Solid Biosciences Inc. | 7 |
| 5 | IVVD Invivyd, Inc. | 6 |
| 6 | KRRO Korro Bio, Inc. | 5 |
| 7 | RLMD Relmada Therapeutics, Inc. | 7 |
| 8 | STRO Sutro Biopharma, Inc. | 5 |
| 9 | ANL Adlai Nortye Group Ltd. | 6 |
| 10 | VRDN Viridian Therapeutics, Inc.\DE | 8 |
Shareholder Targets
13F filers that own its peers but not CGEM, quarter ended Jun 30, 2026Found through its holder-overlap peers: RZLT, CNTX, ENGN, SLDB, IVVD, KRRO, RLMD, STRO, ANL, VRDN, BLTE, XFOR, RACC, CTMX, ZURA, AVTX, TYRA, URGN, VERA, COGT. 485 filers in all.
| # | Filer | In peers | Largest peers |
|---|---|---|---|
| 1 | RA CAPITAL MANAGEMENT, L.P. Registered adviser, Concentrated | $577,459,182 4 held | TYRA, SLDB, RZLT |
| 2 | Darwin Global Management, Ltd. Exempt adviser, Concentrated | $473,845,567 1 held | BLTE |
| 3 | DEERFIELD MANAGEMENT COMPANY, L.P. Registered adviser, Concentrated | $449,275,216 4 held | COGT, VERA, BLTE |
| 4 | Deep Track Capital, LP Adviser, Diversified active | $448,930,519 7 held | VERA, COGT, AVTX |
| 5 | Paradigm Biocapital Advisors LP Registered adviser, Concentrated | $371,766,256 3 held | BLTE, VRDN, TYRA |
| 6 | Avoro Capital Advisors LLC Registered adviser, Concentrated | $334,657,027 3 held | VERA, VRDN, AVTX |
| 7 | Fairmount Funds Management LLC Registered adviser, Concentrated | $306,502,623 2 held | COGT, VRDN |
| 8 | Commodore Capital LP Registered adviser, Concentrated | $231,127,035 6 held | COGT, TYRA, ZURA |
| 9 | Woodline Partners LP Registered adviser, Systematic-like | $230,890,638 15 held | COGT, VERA, URGN |
| 10 | Balyasny Asset Management L.P. Registered adviser, Systematic-like | $207,480,472 12 held | COGT, ANL, RZLT |
Fund Ownership of CGEM by Fund Type
Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026Index funds and index ETFs hold 16.96% of shares outstanding.
| Fund type | Of shares outstanding | Shares |
|---|---|---|
| Index funds | 3.14% | 2,020,061 |
| Index ETFs | 13.82% | 8,894,310 |
| Active ETFs | 1.47% | 943,707 |
| Active funds | 6.45% | 4,152,208 |
| Unclassified | 0.25% | 162,251 |
| All registered funds | 25.13% | 16,172,537 |
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 |
|---|---|---|---|---|---|---|
| Mid MPM BIOIMPACT LLC Adviser | $177,207,719 | 13.54% | 9,731,341 | Shares | 2026-08-14 | |
| Small Lynx1 Capital Management LP Registered adviser | $163,225,335 | 12.47% | 8,963,500 | Shares | 2026-08-13 | |
| Mid BVF INC/IL | $104,719,937 | 8.00% | 5,750,683 | Shares | 2026-08-14 | |
| Mega BlackRock, Inc. Holding company | $95,288,663 | 7.28% | 5,232,766 | Shares | 2026-08-07 | |
| Mega PRICE T ROWE ASSOCIATES INC /MD/ Registered adviser | $69,670,548 | 5.32% | 3,825,950 | Shares | 2026-08-14 | |
| Mega STATE STREET CORP Bank | $66,805,697 | 5.10% | 3,668,627 | Shares | 2026-09-22 | |
| Mid Kynam Capital Management, LP Registered adviser | $56,708,343 | 4.33% | 3,114,132 | Shares | 2026-08-14 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC Registered adviser | $47,602,141 | 3.64% | 2,614,066 | Shares | 2026-08-13 | |
| Large RTW INVESTMENTS, LP Registered adviser | $43,054,758 | 3.29% | 2,364,347 | Shares | 2026-08-14 | |
| Mid Siren, L.L.C. | $34,478,996 | 2.63% | 1,893,410 | Shares | 2026-08-13 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC Registered adviser | $28,176,496 | 2.15% | 1,547,309 | Shares | 2026-08-12 | |
| Small Blue Owl Capital Holdings LP Adviser | $28,039,102 | 2.14% | 1,539,764 | Shares | 2026-08-11 | |
| Mid Venrock Adviser, LLC Registered adviser | $25,129,162 | 1.92% | 1,379,965 | Shares | 2026-08-14 | |
| Mid BOOTHBAY FUND MANAGEMENT, LLC Registered adviser | $19,714,346 | 1.51% | 1,082,611 | Shares | 2026-08-14 | |
| Mega DIMENSIONAL FUND ADVISORS LP Registered adviser | $19,060,297 | 1.46% | 1,046,694 | Shares | 2026-08-11 | |
| Mega GOLDMAN SACHS GROUP INC Holding company | $18,239,099 | 1.39% | 1,001,598 | Shares | 2026-08-14 | |
| Mid Affinity Asset Advisors, LLC Registered adviser | $15,947,589 | 1.22% | 875,760 | Shares | 2026-08-13 | |
| Mega VANGUARD PORTFOLIO MANAGEMENT LLC Registered adviser | $13,452,473 | 1.03% | 738,741 | Shares | 2026-08-13 | |
| Small BOONE CAPITAL MANAGEMENT LLC Registered adviser | $12,827,888 | 0.98% | 704,442 | Shares | 2026-08-14 | |
| Small Elmind Capital, LP Registered adviser | $12,564,900 | 0.96% | 690,000 | Shares | 2026-08-14 | |
| Mega MORGAN STANLEY Holding company | $11,454,725 | 0.88% | 629,035 | Shares | 2026-08-13 | |
| Small TWIN FOCUS CAPITAL PARTNERS, LLC Registered adviser | $10,843,854 | 0.83% | 595,489 | Shares | 2026-07-28 | |
| Mega AQR CAPITAL MANAGEMENT LLC Registered adviser | $10,586,162 | 0.81% | 581,338 | Shares | 2026-08-14 | |
| Mega NORTHERN TRUST CORP Bank | $10,399,364 | 0.79% | 571,080 | Shares | 2026-08-13 | |
| Mega BANK OF AMERICA CORP /DE/ Bank | $9,293,018 | 0.71% | 510,325 | Shares | 2026-08-14 | |
| Mega Nuveen, LLC | $8,594,154 | 0.66% | 471,947 | Shares | 2026-08-11 | |
| Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC Registered adviser | $8,450,059 | 0.65% | 464,034 | Shares | 2026-08-14 | |
| Mid PERCEPTIVE ADVISORS LLC Registered adviser | $7,766,164 | 0.59% | 426,478 | Shares | 2026-08-14 | |
| Mid TCG Crossover Management, LLC | $7,407,573 | 0.57% | 406,786 | Shares | 2026-08-14 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $7,238,183 | 0.55% | 397,484 | Shares | 2026-09-02 | |
| Mega DEUTSCHE BANK AG\ Non-US | $6,971,516 | 0.53% | 382,840 | Shares | 2026-08-07 | |
| Mega VANGUARD FIDUCIARY TRUST CO | $6,612,706 | 0.51% | 363,136 | Shares | 2026-08-13 | |
| Mega MILLENNIUM MANAGEMENT LLC Registered adviser | $6,304,884 | 0.48% | 346,232 | Shares | 2026-08-14 | |
| Large RENAISSANCE TECHNOLOGIES LLC Registered adviser | $5,951,228 | 0.45% | 326,811 | Shares | 2026-08-13 | |
| Small GREAT POINT PARTNERS LLC Registered adviser | $5,463,000 | 0.42% | 300,000 | Shares | 2026-08-14 | |
| Large Connor, Clark & Lunn Investment Management Ltd. Registered adviser | $5,326,424 | 0.41% | 292,500 | Shares | 2026-08-13 | |
| Mega JPMORGAN CHASE & CO Bank | $5,146,708 | 0.39% | 282,631 | Shares | 2026-08-12 | |
| Mega TWO SIGMA INVESTMENTS, LP Registered adviser | $4,963,700 | 0.38% | 272,581 | Shares | 2026-08-14 | |
| Small Bleichroeder LP Registered adviser | $4,552,500 | 0.35% | 250,000 | Shares | 2026-08-13 | |
| Mega UBS Group AG Bank | $4,527,495 | 0.35% | 248,627 | Shares | 2026-08-13 | |
| Mega FMR LLC Holding company | $4,372,493 | 0.33% | 240,115 | Shares | 2026-08-13 | |
| Large ADAGE CAPITAL PARTNERS GP, L.L.C. Registered adviser | $4,333,980 | 0.33% | 238,000 | Shares | 2026-08-14 | |
| Mid Susquehanna Portfolio Strategies, LLC | $4,258,262 | 0.33% | 233,842 | Shares | 2026-08-14 | |
| Mid PFM Health Sciences, LP Registered adviser | $3,504,368 | 0.27% | 192,442 | Shares | 2026-08-14 | |
| Mid MOORE CAPITAL MANAGEMENT, LP Registered adviser | $3,458,916 | 0.26% | 189,946 | Shares | 2026-08-14 | |
| Mega Bank of New York Mellon Corp Bank | $3,114,472 | 0.24% | 171,031 | Shares | 2026-08-06 | |
| Large Squarepoint Ops LLC Registered adviser | $3,061,410 | 0.23% | 168,117 | Shares | 2026-08-14 | |
| Large PRUDENTIAL FINANCIAL INC Insurer | $3,051,176 | 0.23% | 167,555 | Shares | 2026-08-12 | |
| Mega WELLINGTON MANAGEMENT GROUP LLP Holding company | $2,999,477 | 0.23% | 164,716 | Shares | 2026-08-14 | |
| Mega AMERICAN CENTURY COMPANIES INC | $2,846,532 | 0.22% | 156,317 | Shares | 2026-08-12 | |
| Mid Engineers Gate Manager LP | $2,787,040 | 0.21% | 153,050 | Shares | 2026-08-14 | |
| Large Trexquant Investment LP Registered adviser | $2,770,888 | 0.21% | 152,163 | Shares | 2026-08-14 | |
| Mega BARCLAYS PLC Bank | $2,621,237 | 0.20% | 143,945 | Shares | 2026-08-14 | |
| Mega Invesco Ltd. Adviser | $2,614,079 | 0.20% | 143,552 | Shares | 2026-08-14 | |
| Large Jump Financial, LLC | $2,525,872 | 0.19% | 138,708 | Shares | 2026-08-13 | |
| Mega CITIGROUP INC Bank | $2,265,487 | 0.17% | 124,409 | Shares | 2026-08-03 | |
| Large Quantinno Capital Management LP Registered adviser | $2,000,841 | 0.15% | 109,876 | Shares | 2026-08-13 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $1,576,986 | 0.12% | 86,600 | Call | 2026-08-14 | |
| Mega Creative Planning Registered adviser | $1,574,400 | 0.12% | 86,458 | Shares | 2026-08-13 | |
| Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC Registered adviser | $1,532,878 | 0.12% | 84,178 | Shares | 2026-08-13 | |
| Mega TD Asset Management Inc | $1,468,235 | 0.11% | 80,628 | Shares | 2026-08-04 | |
| Small Apis Capital Advisors, LLC Registered adviser | $1,456,800 | 0.11% | 80,000 | Shares | 2026-08-14 | |
| Mega RHUMBLINE ADVISERS Registered adviser | $1,437,315 | 0.11% | 78,930 | Shares | 2026-08-12 | |
| Mid XTX Topco Ltd | $1,401,532 | 0.11% | 76,965 | Shares | 2026-08-14 | |
| Mega MANUFACTURERS LIFE INSURANCE COMPANY, THE Non-US | $1,396,907 | 0.11% | 76,711 | Shares | 2026-09-09 | |
| Mega Swiss National Bank | $1,383,960 | 0.11% | 76,000 | Shares | 2026-08-11 | |
| Mega ALLIANCEBERNSTEIN L.P. Registered adviser | $1,370,302 | 0.10% | 75,250 | Shares | 2026-08-14 | |
| Large Point72 Asset Management, L.P. Registered adviser | $1,365,913 | 0.10% | 75,009 | Shares | 2026-08-14 | |
| Large Mariner, LLC Registered adviser | $1,352,511 | 0.10% | 74,273 | Shares | 2026-08-13 | |
| Small Knott David M Jr | $1,259,804 | 0.10% | 69,182 | Shares | 2026-08-12 | |
| Large Rafferty Asset Management, LLC Registered adviser | $1,203,535 | 0.09% | 66,092 | Shares | 2026-08-14 | |
| Mega MARSHALL WACE, LLP Exempt adviser | $1,202,788 | 0.09% | 66,051 | Shares | 2026-08-13 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $1,187,292 | 0.09% | 65,200 | Put | 2026-09-02 | |
| Mid Longaeva Partners L.P. | $1,179,734 | 0.09% | 64,785 | Shares | 2026-08-14 | |
| Small Ellsworth Advisors, LLC Registered adviser | $1,149,039 | 0.09% | 74,856 | Shares | 2026-10-15 | |
| Large Tidal Investments LLC Registered adviser | $1,144,061 | 0.09% | 62,826 | Shares | 2026-08-13 | |
| Mid MARTINGALE ASSET MANAGEMENT L P Registered adviser | $1,127,890 | 0.09% | 61,938 | Shares | 2026-08-13 | |
| Mid Tema ETFs LLC Registered adviser | $1,030,368 | 0.08% | 67,125 | Shares | 2026-10-16 | |
| Large Corient Private Wealth LLC Registered adviser | $999,310 | 0.08% | 54,877 | Shares | 2026-08-27 | |
| Mid KENNEDY CAPITAL MANAGEMENT LLC Registered adviser | $965,312 | 0.07% | 53,010 | Shares | 2026-08-14 | |
| Mega WELLS FARGO & COMPANY/MN Bank | $933,370 | 0.07% | 51,256 | Shares | 2026-08-14 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $919,605 | 0.07% | 50,500 | Call | 2026-09-02 | |
| Mid Soleus Capital Management, L.P. | $910,500 | 0.07% | 50,000 | Shares | 2026-08-11 | |
| Mega FRANKLIN RESOURCES INC Adviser | $771,101 | 0.06% | 42,345 | Shares | 2026-08-13 | |
| Mega CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Benefit plan | $733,007 | 0.06% | 40,253 | Shares | 2026-08-24 | |
| Mid ALGERT GLOBAL LLC Registered adviser | $671,056 | 0.05% | 36,851 | Shares | 2026-08-13 | |
| Mega Vanguard Global Advisers, LLC Registered adviser | $669,709 | 0.05% | 36,777 | Shares | 2026-08-13 | |
| Mega JANE STREET GROUP, LLC | $668,307 | 0.05% | 36,700 | Put | 2026-08-14 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $655,560 | 0.05% | 36,000 | Put | 2026-08-14 | |
| Mega Fisher Asset Management, LLC Adviser | $655,523 | 0.05% | 35,998 | Shares | 2026-08-04 | |
| Large MetLife Investment Management, LLC Registered adviser | $650,934 | 0.05% | 35,746 | Shares | 2026-08-14 | |
| Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $647,092 | 0.05% | 35,535 | Shares | 2026-08-14 | |
| Large IEQ CAPITAL, LLC Registered adviser | $614,041 | 0.05% | 33,720 | Shares | 2026-08-11 | |
| Mid PROFUND ADVISORS LLC Registered adviser | $608,268 | 0.05% | 33,403 | Shares | 2026-08-11 | |
| Mega VANGUARD ASSET MANAGEMENT, Ltd | $585,214 | 0.04% | 32,137 | Shares | 2026-08-13 | |
| Mega MASSACHUSETTS FINANCIAL SERVICES CO /MA/ Registered adviser | $577,493 | 0.04% | 31,713 | Shares | 2026-08-03 | |
| Mid Leonteq Securities AG | $546,300 | 0.04% | 30,000 | Shares | 2026-07-27 | |
| Small Verdad Advisers, LP | $527,853 | 0.04% | 28,987 | Shares | 2026-08-14 | |
| Mega Russell Investments Group, Ltd. | $520,513 | 0.04% | 28,584 | Shares | 2026-08-06 | |
| Large ExodusPoint Capital Management, LP Registered adviser | $519,658 | 0.04% | 28,537 | Shares | 2026-08-14 |
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