AI Holders Summary · Q1 2026

53 institutions reported SPRO in Q1 2026. GSK plc leads at 44.3% of the visible book.

Top holders

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

Hide index funds / market makers / custodians(6 on this page)

#HolderValueShares% port.Quarter

GSK plc

CIK 0001131399

$22M9.2M3.59%Q1 2026 02

PFIZER INC

CIK 0000078003

$6M2.4M2.31%Q1 2026 03

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$4M1.8M0.00%Q1 2026 04

RENAISSANCE TECHNOLOGIES LLC

CIK 0001037389

$3M1.2M0.00%Q1 2026 05

Alphabet Inc.

CIK 0001652044

$2M890K0.05%Q1 2026 06

TWO SIGMA INVESTMENTS, LP

CIK 0001179392

$2M886K0.00%Q1 2026 07

Anson Funds Management LP

CIK 0001491072

$2M844K0.09%Q1 2026 08

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$1M520K0.00%Q1 2026 09

CITADEL ADVISORS LLC

CIK 0001423053

$1M471K0.00%Q4 2025 10

BlackRock, Inc.

CIK 0002012383

$1M433K0.00%Q1 2026 11

SUSQUEHANNA INTERNATIONAL GROUP, LLP

CIK 0001446194· Market maker

$893K382K0.00%Q1 2026 12

GSA CAPITAL PARTNERS LLP

CIK 0001362033

$651K278K0.04%Q1 2026 13

VANGUARD FIDUCIARY TRUST CO

CIK 0000933478· Index

$618K264K0.00%Q1 2026 14

TWO SIGMA ADVISERS, LP

CIK 0001478735

$505K217K0.00%Q4 2025 15

STATE STREET CORP

CIK 0000093751

$503K215K0.00%Q1 2026 16

Ionic Capital Management LLC

CIK 0001386462

$457K196K0.06%Q4 2025 17

Squarepoint Ops LLC

CIK 0001642575

$455K194K0.00%Q1 2026 18

JANE STREET GROUP, LLC

CIK 0001595888· Market maker

$427K183K0.00%Q1 2026 19

NORTHERN TRUST CORP

CIK 0000073124· Index

$283K121K0.00%Q1 2026 20

BRIDGEWAY CAPITAL MANAGEMENT, LLC

CIK 0001107261

$269K115K0.01%Q1 2026

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