AI Holders Summary · Q1 2026

316 institutions reported PTGX in Q1 2026. BlackRock, Inc. leads at 16.9% 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

$1.0B9.8M0.02%Q1 2026 02

FARALLON CAPITAL MANAGEMENT LLC

CIK 0000909661

$669M6.3M3.81%Q1 2026 03

UBS Group AG

CIK 0001610520

$546M5.2M0.08%Q1 2026 04

RTW INVESTMENTS, LP

CIK 0001493215

$533M5.1M5.31%Q1 2026 05

WELLINGTON MANAGEMENT GROUP LLP

CIK 0000902219

$379M3.6M0.07%Q1 2026 06

Vanguard Portfolio Management

CIK 0002100121· Index

$367M3.5M0.02%Q1 2026 07

STATE STREET CORP

CIK 0000093751

$329M3.1M0.01%Q1 2026 08

JANUS HENDERSON GROUP PLC

CIK 0001274173

$305M2.9M0.15%Q1 2026 09

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$296M2.8M0.01%Q1 2026 10

JOHNSON & JOHNSON

CIK 0000200406

$258M2.4M39.57%Q1 2026 11

Invesco Ltd.

CIK 0000914208

$228M2.2M0.02%Q1 2026 12

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$176M1.7M0.01%Q1 2026 13

PRICE T ROWE ASSOCIATES INC /MD/

CIK 0000080255

$176M1.7M0.02%Q1 2026 14

Woodline Partners LP

CIK 0001784547

$149M1.4M0.56%Q1 2026 15

BANK OF AMERICA CORP /DE/

CIK 0000070858

$137M1.3M0.01%Q1 2026 16

PERCEPTIVE ADVISORS LLC

CIK 0001224962

$130M1.2M2.54%Q1 2026 17

MORGAN STANLEY

CIK 0000895421

$107M1.0M0.01%Q1 2026 18

CITADEL ADVISORS LLC

CIK 0001423053

$107M1.2M0.02%Q4 2025 19

ADAR1 Capital Management, LLC

CIK 0001940272

$105M994K6.17%Q1 2026 20

Hood River Capital Management LLC

CIK 0001578177

$87M829K0.88%Q1 2026

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