Who owns Beam Therapeutics (BEAM)
Which tracked institutional funds hold BEAM, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See BEAM company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
The tracked-fund tape on BEAM is one-sided between 2026-Q1 and 2026-Q2: 115 added or opened and 22 trimmed or exited — on balance accumulating.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
BEAM’s largest tracked holder by dollar value, FMR LLC, sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in BEAM divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, across 262 tracked filers holding BEAM, 145 increased or opened the position and 118 reduced or closed it; over the same quarter, open-market insider Form 4s were net sales.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in BEAM between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 18
- Foresite Capital Management VI LLC$11M
- ARROWSTREET CAPITAL, LIMITED PARTNERSHIP$10M
- MACKENZIE FINANCIAL CORP$6M
- Eversept Partners, LP$6M
- Duquesne Family Office LLC$5M
- D. E. Shaw & Co., Inc.$4M
Full exits 13
- ADAR1 Capital Management, LLC$34M
- CITADEL ADVISORS LLC$8M
- HRT FINANCIAL LP$5M
- JANUS HENDERSON GROUP PLC$2M
- Jump Financial, LLC$2M
- SG Americas Securities, LLC$1M
Largest adds
- FMR LLC$136M
- FARALLON CAPITAL MANAGEMENT, L.L.C.$110M
- BlackRock, Inc.$107M
- STATE STREET CORP$64M
- ARK Investment Management LLC$62M
- VANGUARD PORTFOLIO MANAGEMENT LLC$60M
Largest trims
- Qube Research & Technologies Ltd$19M
- PEREGRINE INVESTMENT MANAGEMENT INC$4M
- Liontrust Investment Partners LLP$3M
- Man Group plc$1M
- Rafferty Asset Management, LLC$909K
- Clearstead Advisors, LLC$808K
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| FMR LLC added | 12,609,002 | $433M | 11.7% | 2026-Q2 |
| FARALLON CAPITAL MANAGEMENT, L.L.C. added | 10,236,396 | $351M | 9.5% | 2026-Q2 |
| ARK Investment Management LLC trimmed | 10,234,862 | $351M | 9.5% | 2026-Q2 |
| BlackRock, Inc. added | 8,997,542 | $309M | 8.3% | 2026-Q2 |
| STATE STREET CORP added | 5,827,122 | $200M | 5.4% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC added | 4,921,259 | $169M | 4.6% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 4,599,437 | $158M | 4.3% | 2026-Q2 |
| ARCH Venture Management, LLC | 4,540,132 | $156M | 4.2% | 2026-Q2 |
| Sumitomo Mitsui Trust Group, Inc. trimmed | 3,455,043 | $119M | 3.2% | 2026-Q2 |
| Amova Asset Management Americas, Inc. trimmed | 3,455,043 | $119M | 3.2% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 3,415,239 | $117M | 3.2% | 2026-Q2 |
| Kynam Capital Management, LP trimmed | 2,840,792 | $97M | 2.6% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 2,596,963 | $89M | 2.4% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP added | 2,225,844 | $76M | 2.1% | 2026-Q2 |
| MORGAN STANLEY added | 1,950,969 | $67M | 1.8% | 2026-Q2 |
| Contrarius Group Holdings Ltd added | 1,614,538 | $55M | 1.5% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC trimmed | 1,551,781 | $53M | 1.4% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP added | 1,388,227 | $48M | 1.3% | 2026-Q2 |
| Casdin Capital, LLC | 1,350,000 | $46M | 1.3% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 1,310,059 | $45M | 1.2% | 2026-Q2 |
| Redmile Group, LLC trimmed | 1,164,259 | $40M | 1.1% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS added | 1,067,883 | $37M | 1.0% | 2026-Q2 |
| Deep Track Capital, LP added | 1,000,000 | $34M | 0.9% | 2026-Q2 |
| NORTHERN TRUST CORP added | 933,481 | $32M | 0.9% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 885,902 | $30M | 0.8% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ added | 720,648 | $25M | 0.7% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 710,712 | $24M | 0.7% | 2026-Q2 |
| UBS Group AG trimmed | 574,814 | $20M | 0.5% | 2026-Q2 |
| RTW INVESTMENTS, LP | 570,394 | $20M | 0.5% | 2026-Q2 |
| JPMORGAN CHASE & CO trimmed | 514,767 | $18M | 0.5% | 2026-Q2 |
| MARSHALL WACE, LLP added | 478,980 | $16M | 0.4% | 2026-Q2 |
| Elmind Capital, LP | 476,338 | $16M | 0.4% | 2026-Q2 |
| IQ EQ FUND MANAGEMENT (IRELAND) Ltd trimmed | 455,954 | $16M | 0.4% | 2026-Q2 |
| JUPITER ASSET MANAGEMENT LTD added | 445,718 | $15M | 0.4% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 445,000 | $15M | 0.4% | 2026-Q2 |
| Bank of New York Mellon Corp added | 362,800 | $12M | 0.3% | 2026-Q2 |
| Foresite Capital Management VI LLC new | 330,000 | $11M | 0.3% | 2026-Q2 |
| Alphabet Inc. | 321,604 | $11M | 0.3% | 2026-Q2 |
| BAILLIE GIFFORD & CO trimmed | 314,228 | $11M | 0.3% | 2026-Q2 |
| Integral Health Asset Management, LLC | 300,000 | $10M | 0.3% | 2026-Q2 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP new | 296,294 | $10M | 0.3% | 2026-Q2 |
| Pictet Asset Management Holding SA trimmed | 250,797 | $9M | 0.2% | 2026-Q2 |
| Nuveen, LLC added | 245,283 | $8M | 0.2% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC added | 204,697 | $7M | 0.2% | 2026-Q2 |
| Invesco Ltd. trimmed | 194,171 | $7M | 0.2% | 2026-Q2 |
| Qube Research & Technologies Ltd trimmed | 194,083 | $7M | 0.2% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 189,389 | $6M | 0.2% | 2026-Q2 |
| MACKENZIE FINANCIAL CORP new | 185,499 | $6M | 0.2% | 2026-Q2 |
| FIRST TRUST ADVISORS LP added | 178,945 | $6M | 0.2% | 2026-Q2 |
| Swiss National Bank trimmed | 178,900 | $6M | 0.2% | 2026-Q2 |
| Eversept Partners, LP new | 166,289 | $6M | 0.2% | 2026-Q2 |
| Vestmark Advisory Solutions, Inc. trimmed | 164,164 | $6M | 0.2% | 2026-Q2 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. added | 156,997 | $5M | 0.1% | 2026-Q2 |
| Russell Investments Group, Ltd. added | 156,585 | $5M | 0.1% | 2026-Q2 |
| Duquesne Family Office LLC new | 153,600 | $5M | 0.1% | 2026-Q2 |
| Susquehanna Portfolio Strategies, LLC added | 151,216 | $5M | 0.1% | 2026-Q2 |
| CITIGROUP INC added | 138,866 | $5M | 0.1% | 2026-Q2 |
| TD Asset Management Inc trimmed | 137,038 | $5M | 0.1% | 2026-Q2 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed | 134,679 | $5M | 0.1% | 2026-Q2 |
| RHUMBLINE ADVISERS added | 132,227 | $5M | 0.1% | 2026-Q2 |
| D. E. Shaw & Co., Inc. added | 130,577 | $4M | 0.1% | 2026-Q2 |
| Man Group plc trimmed | 129,820 | $4M | 0.1% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. added | 127,630 | $3M | 0.1% | 2026-Q2 |
| FEDERATED HERMES, INC. added | 124,826 | $4M | 0.1% | 2026-Q2 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE trimmed | 123,425 | $4M | 0.1% | 2026-Q2 |
| ALGERT GLOBAL LLC trimmed | 111,900 | $4M | 0.1% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM trimmed | 104,505 | $4M | 0.1% | 2026-Q2 |
| DEUTSCHE BANK AG\ added | 104,091 | $4M | 0.1% | 2026-Q2 |
| D.A. DAVIDSON & CO. added | 100,628 | $3M | 0.1% | 2026-Q2 |
| Zurcher Kantonalbank (Zurich Cantonalbank) trimmed | 99,526 | $3M | 0.1% | 2026-Q2 |
| Edgestream Partners, L.P. added | 96,651 | $3M | 0.1% | 2026-Q2 |
| Jupiter Topco LLC new | 94,969 | $3M | 0.1% | 2026-Q2 |
| Rafferty Asset Management, LLC trimmed | 93,606 | $3M | 0.1% | 2026-Q2 |
| VANGUARD ASSET MANAGEMENT, Ltd added | 90,358 | $3M | 0.1% | 2026-Q2 |
| ExodusPoint Capital Management, LP trimmed | 89,939 | $3M | 0.1% | 2026-Q2 |
| Legal & General Group Plc trimmed | 79,179 | $3M | 0.1% | 2026-Q2 |
| Universal- Beteiligungs- und Servicegesellschaft mbH added | 70,464 | $2M | 0.1% | 2026-Q2 |
| Privium Fund Management B.V. added | 70,282 | $2M | 0.1% | 2026-Q2 |
| BARCLAYS PLC added | 70,219 | $2M | 0.1% | 2026-Q2 |
| PEREGRINE INVESTMENT MANAGEMENT INC trimmed | 70,000 | $2M | 0.1% | 2026-Q2 |
| VOYA INVESTMENT MANAGEMENT LLC added | 69,375 | $2M | 0.1% | 2026-Q2 |
| Concurrent Investment Advisors, LLC added | 63,879 | $2M | 0.1% | 2026-Q2 |
| Clearstead Advisors, LLC trimmed | 60,620 | $2M | 0.1% | 2026-Q2 |
| Liontrust Investment Partners LLP trimmed | 60,025 | $2M | 0.1% | 2026-Q2 |
| MetLife Investment Management, LLC added | 57,723 | $2M | 0.1% | 2026-Q2 |
| Alessandra Capital Management, LLC trimmed | 56,945 | $2M | 0.1% | 2026-Q2 |
| LPL Financial LLC trimmed | 56,646 | $2M | 0.1% | 2026-Q2 |
| WCG Wealth Advisors LLC added | 56,172 | $2M | 0.1% | 2026-Q2 |
| Schonfeld Strategic Advisors LLC trimmed | 53,722 | $2M | 0.0% | 2026-Q2 |
| STATE OF WISCONSIN INVESTMENT BOARD trimmed | 50,456 | $2M | 0.0% | 2026-Q2 |
| TUDOR INVESTMENT CORP ET AL added | 49,092 | $2M | 0.0% | 2026-Q2 |
| PROFUND ADVISORS LLC trimmed | 47,584 | $2M | 0.0% | 2026-Q2 |
| XTX Topco Ltd trimmed | 45,755 | $2M | 0.0% | 2026-Q2 |
| Raiffeisen Bank International AG | 45,000 | $2M | 0.0% | 2026-Q2 |
| BALYASNY ASSET MANAGEMENT L.P. added | 41,792 | $1M | 0.0% | 2026-Q2 |
| Erste Asset Management GmbH added | 41,000 | $1M | 0.0% | 2026-Q2 |
| Ishara Investments LP trimmed | 41,000 | $1M | 0.0% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC added | 38,746 | $1M | 0.0% | 2026-Q2 |
| VIRGINIA RETIREMENT SYSTEMS ET Al added | 38,131 | $1M | 0.0% | 2026-Q2 |
| Vanguard Global Advisers, LLC trimmed | 38,064 | $1M | 0.0% | 2026-Q2 |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.