AI Holders Summary · Q2 2026

452 institutions reported MARA in Q2 2026. BlackRock, Inc. leads at 31.7% 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

BlackRock, Inc.

CIK 0002012383

$890M64.1M0.01%Q2 2026 02

SUSQUEHANNA INTERNATIONAL GROUP, LLP

CIK 0001446194· Market maker

$243M29.7M0.03%Q1 2026 03

STATE STREET CORP

CIK 0000093751

$221M15.9M0.01%Q2 2026 04

Vanguard Portfolio Management

CIK 0002100121· Index

$216M26.4M0.01%Q1 2026 05

CITADEL ADVISORS LLC

CIK 0001423053

$163M18.2M0.02%Q4 2025 06

JANE STREET GROUP, LLC

CIK 0001595888· Market maker

$155M19.1M0.02%Q1 2026 07

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$133M16.4M0.00%Q1 2026 08

Tidal Investments LLC

CIK 0001600064

$111M13.6M0.23%Q1 2026 09

WOLVERINE ASSET MANAGEMENT LLC

CIK 0001279891

$92M11.3M0.89%Q1 2026 10

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$84M10.3M0.01%Q1 2026 11

Marex Group plc

CIK 0001997464

$68M8.3M0.43%Q1 2026 12

UBS Group AG

CIK 0001610520

$63M7.7M0.01%Q1 2026 13

WOLVERINE TRADING, LLC

CIK 0000927337

$58M3.1M0.04%Q3 2025 14

D. E. Shaw & Co., Inc.

CIK 0001009207

$54M6.0M0.03%Q4 2025 15

GOLDMAN SACHS GROUP INC

CIK 0000886982

$49M6.0M0.01%Q1 2026 16

Parallax Volatility Advisers, L.P.

CIK 0001521001

$46M4.1M0.12%Q1 2026 17

WHITEBOX ADVISORS LLC

CIK 0001257391

$44M5.4M0.54%Q1 2026 18

MORGAN STANLEY

CIK 0000895421

$43M5.2M0.00%Q1 2026 19

BANK OF AMERICA CORP /DE/

CIK 0000070858

$42M5.1M0.00%Q1 2026 20

Bank of New York Mellon Corp

CIK 0001390777

$37M2.7M0.01%Q2 2026

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