Who owns Kymera Therapeutics (KYMR)
Which tracked institutional funds hold KYMR, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See KYMR 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 KYMR is one-sided between 2026-Q1 and 2026-Q2: 140 added or opened and 31 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
KYMR’s largest tracked holder by dollar value, FMR LLC, sizes it at 0.1% 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 KYMR 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 258 tracked filers holding KYMR, 136 increased or opened the position and 125 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 KYMR 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 19
- Clearbridge Investments, LLC$40M
- MARSHALL WACE, LLP$19M
- RAYMOND JAMES FINANCIAL INC$16M
- BOONE CAPITAL MANAGEMENT LLC$13M
- Atika Capital Management LLC$12M
- XTX Topco Ltd$7M
Full exits 17
- T. Rowe Price Investment Management, Inc.$455M
- DEERFIELD MANAGEMENT COMPANY, L.P.$47M
- ALPS ADVISORS INC$6M
- Monashee Investment Management LLC$3M
- HARBOR CAPITAL ADVISORS, INC.$3M
- Sio Capital Management, LLC$3M
Largest adds
- FMR LLC$442M
- PRICE T ROWE ASSOCIATES INC /MD/$311M
- BlackRock, Inc.$275M
- BAKER BROS. ADVISORS LP$272M
- Avoro Capital Advisors LLC$235M
- STATE STREET CORP$115M
Largest trims
- Atlas Venture Life Science Advisors, LLC$55M
- Commodore Capital LP$34M
- BVF INC/IL$14M
- Freestone Grove Partners LP$11M
- First Turn Management, LLC$9M
- NEUBERGER BERMAN GROUP LLC$6M
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 | 12,349,256 | $1.4B | 13.8% | 2026-Q2 |
| BAKER BROS. ADVISORS LP | 8,657,242 | $993M | 9.7% | 2026-Q2 |
| Avoro Capital Advisors LLC | 7,474,747 | $857M | 8.4% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 7,112,980 | $816M | 8.0% | 2026-Q2 |
| BlackRock, Inc. added | 5,538,210 | $635M | 6.2% | 2026-Q2 |
| BVF INC/IL trimmed | 3,872,052 | $444M | 4.3% | 2026-Q2 |
| WELLINGTON MANAGEMENT GROUP LLP trimmed | 3,675,028 | $421M | 4.1% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC added | 2,992,193 | $343M | 3.4% | 2026-Q2 |
| Siren, L.L.C. trimmed | 2,935,830 | $337M | 3.3% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 2,932,378 | $336M | 3.3% | 2026-Q2 |
| Atlas Venture Life Science Advisors, LLC trimmed | 2,847,541 | $327M | 3.2% | 2026-Q2 |
| STATE STREET CORP added | 2,737,226 | $314M | 3.1% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 1,816,331 | $208M | 2.0% | 2026-Q2 |
| Capital Research Global Investors trimmed | 1,388,881 | $159M | 1.6% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 1,187,333 | $136M | 1.3% | 2026-Q2 |
| UBS Group AG trimmed | 1,007,777 | $116M | 1.1% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. added | 981,521 | $82M | 0.8% | 2026-Q2 |
| Driehaus Capital Management LLC trimmed | 919,233 | $105M | 1.0% | 2026-Q2 |
| Merck & Co., Inc. | 772,165 | $89M | 0.9% | 2026-Q2 |
| NORGES BANK added | 757,246 | $87M | 0.8% | 2026-Q2 |
| FEDERATED HERMES, INC. added | 749,398 | $86M | 0.8% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP added | 745,152 | $85M | 0.8% | 2026-Q2 |
| FRONTIER CAPITAL MANAGEMENT CO LLC trimmed | 740,866 | $85M | 0.8% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC trimmed | 736,866 | $84M | 0.8% | 2026-Q2 |
| Holocene Advisors, LP trimmed | 636,579 | $73M | 0.7% | 2026-Q2 |
| NORTHERN TRUST CORP added | 581,907 | $67M | 0.7% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 529,729 | $61M | 0.6% | 2026-Q2 |
| FRANKLIN RESOURCES INC added | 515,050 | $59M | 0.6% | 2026-Q2 |
| EVENTIDE ASSET MANAGEMENT, LLC trimmed | 504,210 | $58M | 0.6% | 2026-Q2 |
| JENNISON ASSOCIATES LLC trimmed | 502,978 | $58M | 0.6% | 2026-Q2 |
| Woodline Partners LP added | 500,868 | $57M | 0.6% | 2026-Q2 |
| Rock Springs Capital Management LP trimmed | 453,156 | $52M | 0.5% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 449,731 | $52M | 0.5% | 2026-Q2 |
| Boxer Capital Management, LLC added | 429,100 | $49M | 0.5% | 2026-Q2 |
| Pictet Asset Management Holding SA trimmed | 395,540 | $45M | 0.4% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ added | 378,286 | $43M | 0.4% | 2026-Q2 |
| BRAIDWELL LP added | 378,163 | $43M | 0.4% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS added | 375,868 | $43M | 0.4% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP added | 371,374 | $43M | 0.4% | 2026-Q2 |
| Clearbridge Investments, LLC new | 347,221 | $40M | 0.4% | 2026-Q2 |
| Octagon Capital Advisors LP trimmed | 310,000 | $36M | 0.3% | 2026-Q2 |
| Nextech Invest Ltd. | 278,896 | $32M | 0.3% | 2026-Q2 |
| Alyeska Investment Group, L.P. trimmed | 276,455 | $32M | 0.3% | 2026-Q2 |
| TD Asset Management Inc trimmed | 272,900 | $31M | 0.3% | 2026-Q2 |
| VOYA INVESTMENT MANAGEMENT LLC added | 269,914 | $31M | 0.3% | 2026-Q2 |
| Commodore Capital LP trimmed | 250,000 | $29M | 0.3% | 2026-Q2 |
| RTW INVESTMENTS, LP | 240,000 | $28M | 0.3% | 2026-Q2 |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ added | 233,713 | $27M | 0.3% | 2026-Q2 |
| GILDER GAGNON HOWE & CO LLC trimmed | 229,053 | $26M | 0.3% | 2026-Q2 |
| Bank of New York Mellon Corp added | 215,588 | $25M | 0.2% | 2026-Q2 |
| Polar Capital Holdings Plc trimmed | 203,747 | $23M | 0.2% | 2026-Q2 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. trimmed | 200,000 | $23M | 0.2% | 2026-Q2 |
| MORGAN STANLEY trimmed | 194,843 | $22M | 0.2% | 2026-Q2 |
| Candriam S.C.A. trimmed | 192,880 | $22M | 0.2% | 2026-Q2 |
| MARSHALL WACE, LLP added | 167,517 | $19M | 0.2% | 2026-Q2 |
| Eagle Health Investments LP added | 166,148 | $19M | 0.2% | 2026-Q2 |
| TimesSquare Capital Management, LLC trimmed | 157,327 | $18M | 0.2% | 2026-Q2 |
| WCM INVESTMENT MANAGEMENT, LLC trimmed | 151,810 | $17M | 0.2% | 2026-Q2 |
| Connor, Clark & Lunn Investment Management Ltd. added | 149,908 | $17M | 0.2% | 2026-Q2 |
| Foresite Capital Management VI LLC | 146,332 | $17M | 0.2% | 2026-Q2 |
| Nuveen, LLC added | 138,478 | $16M | 0.2% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC added | 135,584 | $16M | 0.2% | 2026-Q2 |
| Deer Management Co. LLC | 125,895 | $14M | 0.1% | 2026-Q2 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE trimmed | 119,503 | $14M | 0.1% | 2026-Q2 |
| BOONE CAPITAL MANAGEMENT LLC new | 113,173 | $13M | 0.1% | 2026-Q2 |
| JPMORGAN CHASE & CO trimmed | 113,062 | $13M | 0.1% | 2026-Q2 |
| CITADEL ADVISORS LLC trimmed | 111,555 | $13M | 0.1% | 2026-Q2 |
| ARMISTICE CAPITAL, LLC added | 106,272 | $12M | 0.1% | 2026-Q2 |
| DEUTSCHE BANK AG\ added | 106,049 | $12M | 0.1% | 2026-Q2 |
| Atika Capital Management LLC added | 104,000 | $12M | 0.1% | 2026-Q2 |
| First Turn Management, LLC trimmed | 102,533 | $12M | 0.1% | 2026-Q2 |
| Ensign Peak Advisors, Inc trimmed | 97,660 | $11M | 0.1% | 2026-Q2 |
| Squarepoint Ops LLC added | 97,189 | $11M | 0.1% | 2026-Q2 |
| Swiss National Bank trimmed | 90,100 | $10M | 0.1% | 2026-Q2 |
| Universal- Beteiligungs- und Servicegesellschaft mbH trimmed | 89,494 | $10M | 0.1% | 2026-Q2 |
| RHUMBLINE ADVISERS added | 80,684 | $9M | 0.1% | 2026-Q2 |
| CITIGROUP INC added | 77,784 | $9M | 0.1% | 2026-Q2 |
| Burkehill Global Management, LP | 75,000 | $9M | 0.1% | 2026-Q2 |
| VICTORY CAPITAL MANAGEMENT INC added | 74,340 | $9M | 0.1% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 72,160 | $8M | 0.1% | 2026-Q2 |
| FIFTH THIRD BANCORP added | 65,659 | $8M | 0.1% | 2026-Q2 |
| Yiheng Capital Management, L.P. trimmed | 63,440 | $7M | 0.1% | 2026-Q2 |
| Russell Investments Group, Ltd. added | 62,233 | $7M | 0.1% | 2026-Q2 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. trimmed | 61,657 | $7M | 0.1% | 2026-Q2 |
| XTX Topco Ltd added | 61,501 | $7M | 0.1% | 2026-Q2 |
| FIRST TRUST ADVISORS LP trimmed | 61,368 | $7M | 0.1% | 2026-Q2 |
| Invesco Ltd. trimmed | 60,813 | $7M | 0.1% | 2026-Q2 |
| Nicholas Investment Partners, LP added | 54,569 | $6M | 0.1% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM trimmed | 54,429 | $6M | 0.1% | 2026-Q2 |
| Patient Square Capital LP trimmed | 47,500 | $5M | 0.1% | 2026-Q2 |
| VANGUARD ASSET MANAGEMENT, Ltd added | 45,786 | $5M | 0.1% | 2026-Q2 |
| PEREGRINE CAPITAL MANAGEMENT LLC new | 45,671 | $5M | 0.1% | 2026-Q2 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. added | 41,126 | $5M | 0.0% | 2026-Q2 |
| STATE OF WISCONSIN INVESTMENT BOARD trimmed | 36,833 | $4M | 0.0% | 2026-Q2 |
| MetLife Investment Management, LLC added | 36,494 | $4M | 0.0% | 2026-Q2 |
| Legal & General Group Plc trimmed | 36,237 | $4M | 0.0% | 2026-Q2 |
| Rafferty Asset Management, LLC trimmed | 35,287 | $4M | 0.0% | 2026-Q2 |
| Odyssean, LLC added | 34,485 | $4M | 0.0% | 2026-Q2 |
| Zurcher Kantonalbank (Zurich Cantonalbank) added | 33,591 | $4M | 0.0% | 2026-Q2 |
| Rockefeller Capital Management L.P. trimmed | 31,367 | $4M | 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.