AI Holders Summary · Q2 2026

78 institutions reported PEPG in Q2 2026. RA CAPITAL MANAGEMENT, L.P. leads at 36.7% of the visible book.

Top holders

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

Hide index funds / market makers / custodians(2 on this page)

#HolderValueShares% port.Quarter

RA CAPITAL MANAGEMENT, L.P.

CIK 0001346824

$36M20.1M0.31%Q2 2026 02

BVF INC/IL

CIK 0001056807

$12M1.9M0.42%Q4 2025 03

Commodore Capital LP

CIK 0001831942

$8M4.5M0.48%Q2 2026 04

VIKING GLOBAL INVESTORS LP

CIK 0001103804

$6M3.5M0.02%Q1 2026 05

Laurion Capital Management LP

CIK 0001390202

$5M2.8M0.13%Q2 2026 06

ADAR1 Capital Management, LLC

CIK 0001940272

$5M2.6M0.21%Q2 2026 07

Vivo Capital, LLC

CIK 0001674712

$4M2.3M0.38%Q2 2026 08

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$3M1.9M0.00%Q2 2026 09

MILLENNIUM MANAGEMENT LLC

CIK 0001273087

$3M1.8M0.00%Q2 2026 10

RENAISSANCE TECHNOLOGIES LLC

CIK 0001037389

$3M1.5M0.00%Q2 2026 11

BlackRock, Inc.

CIK 0002012383

$2M1.3M0.00%Q2 2026 12

MARSHALL WACE, LLP

CIK 0001318757

$2M867K0.00%Q2 2026 13

Ikarian Capital, LLC

CIK 0001778253

$1M747K0.11%Q1 2026 14

683 Capital Management, LLC

CIK 0001404574

$1M187K0.05%Q4 2025 15

CITADEL ADVISORS LLC

CIK 0001423053

$1M671K0.00%Q2 2026 16

AWM Investment Company, Inc.

CIK 0001535264

$1M600K0.09%Q2 2026 17

MONIMUS CAPITAL MANAGEMENT, LP

CIK 0001848831

$1M588K0.24%Q2 2026 18

Squarepoint Ops LLC

CIK 0001642575

$952K529K0.00%Q2 2026 19

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$943K523K0.00%Q2 2026 20

Creek Drive Management Group LLC

CIK 0002111824

$810K450K0.39%Q2 2026

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