AI Holders Summary · Q3 2026

278 institutions reported RLAY in Q3 2026. FMR LLC leads at 15.7% of the visible book.

Top holders

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

Hide index funds / market makers / custodians(4 on this page)

#HolderValueShares% port.Quarter

FMR LLC

CIK 0000315066

$438M24.2M0.02%Q3 2026 02

Casdin Capital, LLC

CIK 0001534261

$300M16.0M15.02%Q2 2026 03

BlackRock, Inc.

CIK 0002012383

$286M15.3M0.00%Q2 2026 04

SB INVESTMENT ADVISERS (UK) LTD

CIK 0001731509

$278M27.9M3.59%Q1 2026 05

Commodore Capital LP

CIK 0001831942

$225M12.0M13.37%Q2 2026 06

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$168M9.0M0.00%Q2 2026 07

STATE STREET CORP

CIK 0000093751

$165M9.2M0.00%Q3 2026 08

Bellevue Group AG

CIK 0001674546

$116M6.2M2.44%Q2 2026 09

PERCEPTIVE ADVISORS LLC

CIK 0001224962

$97M9.8M1.90%Q1 2026 10

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$92M5.1M0.00%Q3 2026 11

TCG Crossover Management, LLC

CIK 0001839948

$80M4.3M1.92%Q2 2026 12

MORGAN STANLEY

CIK 0000895421

$72M3.9M0.00%Q2 2026 13

WESTFIELD CAPITAL MANAGEMENT CO LP

CIK 0001177719

$65M3.6M0.21%Q3 2026 14

GOLDMAN SACHS GROUP INC

CIK 0000886982

$64M3.4M0.01%Q2 2026 15

Kynam Capital Management, LP

CIK 0001907884

$62M3.3M3.41%Q2 2026 16

Siren, L.L.C.

CIK 0002005245

$59M3.3M1.39%Q3 2026 17

DIMENSIONAL FUND ADVISORS LP

CIK 0000354204· Quasi-passive

$57M3.2M0.01%Q3 2026 18

Spruce Street Capital LP

CIK 0002050194

$56M3.0M10.95%Q2 2026 19

Vanguard Portfolio Management

CIK 0002100121· Index

$54M2.9M0.00%Q2 2026 20

BANK OF AMERICA CORP /DE/

CIK 0000070858

$50M2.7M0.00%Q2 2026

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