AI Holders Summary · Q1 2026

475 institutions reported RGEN in Q1 2026. BlackRock, Inc. leads at 14.7% 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

BlackRock, Inc.

CIK 0002012383

$706M6.0M0.01%Q1 2026 02

PRICE T ROWE ASSOCIATES INC /MD/

CIK 0000080255

$575M4.9M0.07%Q1 2026 03

FMR LLC

CIK 0000315066

$340M2.9M0.02%Q1 2026 04

UNITED CAPITAL FINANCIAL ADVISORS, LLC

CIK 0001463217

$327M2.8M2.01%Q1 2026 05

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$282M2.4M0.01%Q1 2026 06

Vanguard Portfolio Management

CIK 0002100121· Index

$272M2.3M0.01%Q1 2026 07

CITADEL ADVISORS LLC

CIK 0001423053

$235M1.4M0.04%Q4 2025 08

WASATCH ADVISORS LP

CIK 0000814133

$217M1.6M1.42%Q2 2026 09

STATE STREET CORP

CIK 0000093751

$209M1.8M0.01%Q1 2026 10

Bank of New York Mellon Corp

CIK 0001390777

$180M1.5M0.03%Q1 2026 11

MAVERICK CAPITAL LTD

CIK 0000934639

$179M1.5M2.06%Q1 2026 12

MASSACHUSETTS FINANCIAL SERVICES CO /MA/

CIK 0000912938

$165M1.4M0.06%Q1 2026 13

T. Rowe Price Investment Management, Inc.

CIK 0001897612

$161M1.4M0.11%Q1 2026 14

Invesco Ltd.

CIK 0000914208

$151M1.3M0.01%Q1 2026 15

RTW INVESTMENTS, LP

CIK 0001493215

$142M1.2M1.41%Q1 2026 16

FRANKLIN RESOURCES INC

CIK 0000038777

$141M1.2M0.03%Q1 2026 17

CONGRESS ASSET MANAGEMENT CO

CIK 0000897378

$138M1.0M0.85%Q2 2026 18

ALLIANCEBERNSTEIN L.P.

CIK 0001109448

$136M832K0.04%Q1 2026 19

Conestoga Capital Advisors, LLC

CIK 0001163744

$129M1.1M2.58%Q1 2026 20

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$125M1.1M0.01%Q1 2026

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