AI Holders Summary · Q1 2026

269 institutions reported KYMR in Q1 2026. FMR LLC leads at 15.2% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

Hide index funds / market makers / custodians(3 on this page)

#HolderValueShares% port.Quarter

FMR LLC

CIK 0000315066

$974M11.7M0.05%Q1 2026 02

BAKER BROS. ADVISORS LP

CIK 0001263508

$674M8.7M3.94%Q4 2025 03

Avoro Capital Advisors LLC

CIK 0001633313

$623M7.5M6.12%Q1 2026 04

PRICE T ROWE ASSOCIATES INC /MD/

CIK 0000080255

$505M6.1M0.06%Q1 2026 05

T. Rowe Price Investment Management, Inc.

CIK 0001897612

$455M5.5M0.31%Q1 2026 06

BVF INC/IL

CIK 0001056807

$428M5.5M14.41%Q4 2025 07

BlackRock, Inc.

CIK 0002012383

$422M5.1M0.01%Q1 2026 08

Atlas Venture Life Science Advisors, LLC

CIK 0001917529

$381M4.6M48.26%Q1 2026 09

WELLINGTON MANAGEMENT GROUP LLP

CIK 0000902219

$324M3.9M0.06%Q1 2026 10

Siren, L.L.C.

CIK 0002005245

$265M3.2M7.36%Q1 2026 11

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$240M2.9M0.01%Q1 2026 12

Vanguard Portfolio Management

CIK 0002100121· Index

$239M2.9M0.01%Q1 2026 13

STATE STREET CORP

CIK 0000093751

$199M2.4M0.01%Q1 2026 14

Capital Research Global Investors

CIK 0001422848

$139M1.7M0.02%Q1 2026 15

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$137M1.6M0.01%Q1 2026 16

DRIEHAUS CAPITAL MANAGEMENT LLC

CIK 0000938206

$87M1.0M0.64%Q1 2026 17

UBS Group AG

CIK 0001610520

$85M1.0M0.01%Q1 2026 18

GOLDMAN SACHS GROUP INC

CIK 0000886982

$74M888K0.01%Q1 2026 19

UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC

CIK 0000861177

$73M876K0.02%Q1 2026 20

Holocene Advisors, LP

CIK 0001700574

$70M837K0.17%Q1 2026

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