AI Holders Summary · Q2 2026

334 institutions reported MGNI in Q2 2026. BlackRock, Inc. leads at 13.8% of the visible book.

Top holders

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

Hide index funds / market makers / custodians(4 on this page)

#HolderValueShares% port.Quarter

BlackRock, Inc.

CIK 0002012383

$241M12.7M0.00%Q2 2026 02

Vanguard Portfolio Management

CIK 0002100121· Index

$156M8.2M0.01%Q2 2026 03

FMR LLC

CIK 0000315066

$147M7.8M0.01%Q2 2026 04

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$118M6.2M0.00%Q2 2026 05

WELLINGTON MANAGEMENT GROUP LLP

CIK 0000902219

$115M6.0M0.02%Q2 2026 06

DIMENSIONAL FUND ADVISORS LP

CIK 0000354204· Quasi-passive

$100M5.3M0.02%Q2 2026 07

Boston Partners

CIK 0001386060

$96M5.0M0.09%Q2 2026 08

AMERICAN CENTURY COMPANIES INC

CIK 0000748054

$88M4.6M0.04%Q2 2026 09

Capital Research Global Investors

CIK 0001422848

$73M3.9M0.01%Q2 2026 10

Nuveen, LLC

CIK 0001871926

$72M3.8M0.02%Q2 2026 11

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$72M3.8M0.00%Q2 2026 12

Edenbrook Capital, LLC

CIK 0001666682

$67M3.6M13.60%Q2 2026 13

STATE STREET CORP

CIK 0000093751

$67M3.5M0.00%Q2 2026 14

Nine Ten Capital Management LLC

CIK 0001635236

$62M3.3M19.26%Q2 2026 15

Granahan Investment Management, LLC

CIK 0001026710

$59M3.1M2.09%Q2 2026 16

CANADA PENSION PLAN INVESTMENT BOARD

CIK 0001283718

$57M3.0M0.03%Q2 2026 17

Park West Asset Management LLC

CIK 0001386928

$43M2.3M2.91%Q2 2026 18

Caption Management, LLC

CIK 0001706766

$38M2.0M0.18%Q2 2026 19

MORGAN STANLEY

CIK 0000895421

$38M2.0M0.00%Q2 2026 20

CITADEL ADVISORS LLC

CIK 0001423053

$38M2.0M0.00%Q2 2026

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