AI Holders Summary · Q2 2026

21 institutions reported MGRX in Q2 2026. CITADEL ADVISORS LLC leads at 26.2% 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

CITADEL ADVISORS LLC

CIK 0001423053

$129K339K0.00%Q2 2026 02

XTX Topco Ltd

CIK 0001828301

$71K186K0.00%Q2 2026 03

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$59K156K0.00%Q2 2026 04

Ikarian Capital, LLC

CIK 0001778253

$50K138K0.00%Q1 2026 05

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$47K123K0.00%Q2 2026 06

JANE STREET GROUP, LLC

CIK 0001595888· Market maker

$26K73K0.00%Q1 2026 07

Virtu Financial LLC

CIK 0001533964· Market maker

$22K61K0.00%Q1 2026 08

VANGUARD FIDUCIARY TRUST CO

CIK 0000933478· Index

$22K57K0.00%Q2 2026 09

BOOTHBAY FUND MANAGEMENT, LLC

CIK 0001549230

$15K38K0.00%Q2 2026 10

NORTHERN TRUST CORP

CIK 0000073124· Index

$14K38K0.00%Q2 2026 11

Ackerman Capital Advisors, LLC

CIK 0001699506

$13K35K0.00%Q2 2026 12

ACT Advisors, LLC.

CIK 0001842554

$10K27K0.00%Q2 2026 13

GOLDMAN SACHS GROUP INC

CIK 0000886982

$4K12K0.00%Q2 2026 14

Sunbelt Securities, Inc.

CIK 0001632932

$4K12K0.00%Q1 2026 15

Csenge Advisory Group

CIK 0001715593

$4K10K0.00%Q2 2026 16

AMERIFLEX GROUP, INC.

CIK 0002057637

$1K3K0.00%Q2 2026 17

Fortitude Family Office, LLC

CIK 0001950506

$5101K0.00%Q2 2026 18

MORGAN STANLEY

CIK 0000895421

$3801K0.00%Q2 2026 19

Tower Research Capital LLC (TRC)

CIK 0001533421

$2987830.00%Q2 2026 20

BARCLAYS PLC

CIK 0000312069

$250.00%Q2 2026

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