AI Holders Summary · Q2 2026

396 institutions reported PTCT in Q2 2026. BlackRock, Inc. leads at 19.3% 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

$1.1B14.0M0.02%Q2 2026 02

RTW INVESTMENTS, LP

CIK 0001493215

$632M7.7M5.39%Q2 2026 03

Jupiter Topco LLC

CIK 0002146052

$590M7.2M0.24%Q2 2026 04

JANUS HENDERSON GROUP PLC

CIK 0001274173

$490M7.2M0.23%Q1 2026 05

Vanguard Portfolio Management

CIK 0002100121· Index

$402M4.9M0.02%Q2 2026 06

STATE STREET CORP

CIK 0000093751

$375M4.6M0.01%Q2 2026 07

WELLINGTON MANAGEMENT GROUP LLP

CIK 0000902219

$337M4.1M0.06%Q2 2026 08

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$305M3.7M0.01%Q2 2026 09

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$180M2.2M0.01%Q2 2026 10

TORONTO DOMINION BANK

CIK 0000947263

$177M2.2M0.20%Q2 2026 11

WESTFIELD CAPITAL MANAGEMENT CO LP

CIK 0001177719

$160M2.0M0.52%Q2 2026 12

Hood River Capital Management LLC

CIK 0001578177

$142M1.7M1.03%Q2 2026 13

ARMISTICE CAPITAL, LLC

CIK 0001601086

$141M1.7M1.73%Q2 2026 14

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC

CIK 0001644956

$141M1.7M0.42%Q2 2026 15

D. E. Shaw & Co., Inc.

CIK 0001009207

$133M1.7M0.07%Q4 2025 16

BANK OF AMERICA CORP /DE/

CIK 0000070858

$118M1.5M0.01%Q2 2026 17

DRIEHAUS CAPITAL MANAGEMENT LLC

CIK 0000938206

$117M1.4M0.68%Q2 2026 18

FMR LLC

CIK 0000315066

$114M1.4M0.01%Q2 2026 19

Jefferies Financial Group Inc.

CIK 0000096223

$111M1.4M0.73%Q2 2026 20

TANG CAPITAL MANAGEMENT LLC

CIK 0001232621

$102M1.5M5.19%Q1 2026

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