AI Holders Summary · Q1 2026

23 institutions reported XLO in Q1 2026. Bain Capital Life Sciences Investors, LLC leads at 33.7% 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

Bain Capital Life Sciences Investors, LLC

CIK 0001703031

$6M664K0.50%Q1 2026 02

Frazier Life Sciences Management, L.P.

CIK 0001892134

$4M423K0.09%Q1 2026 03

Sio Capital Management, LLC

CIK 0001482416

$1M152K0.18%Q1 2026 04

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$1M124K0.00%Q1 2026 05

Caligan Partners LP

CIK 0001727492

$943K112K0.06%Q1 2026 06

Merck & Co., Inc.

CIK 0000310158

$891K106K0.26%Q1 2026 07

Stonepine Capital Management, LLC

CIK 0001440771

$540K64K0.22%Q1 2026 08

MORGAN STANLEY

CIK 0000895421

$484K57K0.00%Q1 2026 09

RENAISSANCE TECHNOLOGIES LLC

CIK 0001037389

$417K50K0.00%Q1 2026 10

AJU IB Investment Co., Ltd.

CIK 0001710065

$401K48K1.31%Q1 2026 11

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$313K37K0.00%Q1 2026 12

FMR LLC

CIK 0000315066

$307K37K0.00%Q1 2026 13

VANGUARD FIDUCIARY TRUST CO

CIK 0000933478· Index

$239K28K0.00%Q1 2026 14

GSA CAPITAL PARTNERS LLP

CIK 0001362033

$143K17K0.01%Q1 2026 15

Velan Capital Investment Management LP

CIK 0001848809

$120K14K0.08%Q1 2026 16

Ghisallo Capital Management LLC

CIK 0001825214

$116K14K0.00%Q1 2026 17

STATE STREET CORP

CIK 0000093751

$112K13K0.00%Q1 2026 18

CWM, LLC

CIK 0001535847

$35K4K0.00%Q1 2026 19

UBS Group AG

CIK 0001610520

$34K4K0.00%Q1 2026 20

JPMORGAN CHASE & CO

CIK 0000019617

$2K2400.00%Q1 2026

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