AI Holders Summary · Q1 2026

69 institutions reported STEX in Q1 2026. Legacy Wealth Managment, LLC/ID leads at 31.4% of the visible book.

Top holders

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

Hide index funds / market makers / custodians(5 on this page)

#HolderValueShares% port.Quarter

Legacy Wealth Managment, LLC/ID

CIK 0002045082

$8M7.0M3.95%Q1 2026 02

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$4M4.0M0.00%Q1 2026 03

Yorkville Advisors Global, LP

CIK 0001838613

$4M3.8M2.74%Q1 2026 04

BlackRock, Inc.

CIK 0002012383

$1M933K0.00%Q1 2026 05

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$1M919K0.00%Q1 2026 06

MILLENNIUM MANAGEMENT LLC

CIK 0001273087

$818K724K0.00%Q1 2026 07

SUSQUEHANNA INTERNATIONAL GROUP, LLP

CIK 0001446194· Market maker

$778K688K0.00%Q1 2026 08

Shay Capital LLC

CIK 0001723643

$724K641K0.06%Q1 2026 09

JANE STREET GROUP, LLC

CIK 0001595888· Market maker

$521K461K0.00%Q1 2026 10

VANGUARD FIDUCIARY TRUST CO

CIK 0000933478· Index

$483K427K0.00%Q1 2026 11

RENAISSANCE TECHNOLOGIES LLC

CIK 0001037389

$454K402K0.00%Q1 2026 12

Rossby Financial, LCC

CIK 0002056510

$417K376K0.09%Q1 2026 13

NATIONAL BANK OF CANADA /FI/

CIK 0000926171

$370K330K0.00%Q1 2026 14

Cambridge Investment Research Advisors, Inc.

CIK 0001419186

$362K320K0.00%Q1 2026 15

STATE STREET CORP

CIK 0000093751

$323K286K0.00%Q1 2026 16

CITADEL ADVISORS LLC

CIK 0001423053

$301K99K0.00%Q4 2025 17

United Capital Management of KS, Inc.

CIK 0001753219

$280K248K0.04%Q1 2026 18

WOLVERINE TRADING, LLC

CIK 0000927337

$276K51K0.00%Q3 2025 19

Kovitz Investment Group Partners, LLC

CIK 0001665198

$269K238K0.01%Q1 2026 20

One68 Global Capital, LLC

CIK 0001755535

$218K193K0.71%Q1 2026

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