AI Holders Summary · Q1 2026

426 institutions reported MGY in Q1 2026. BlackRock, Inc. leads at 21.7% 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

$931M29.5M0.02%Q1 2026 02

Vanguard Portfolio Management

CIK 0002100121· Index

$410M13.0M0.02%Q1 2026 03

AMERICAN CENTURY COMPANIES INC

CIK 0000748054

$332M10.5M0.17%Q1 2026 04

STATE STREET CORP

CIK 0000093751

$300M9.5M0.01%Q1 2026 05

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$227M7.2M0.01%Q1 2026 06

DIMENSIONAL FUND ADVISORS LP

CIK 0000354204· Quasi-passive

$222M7.0M0.05%Q1 2026 07

JANUS HENDERSON GROUP PLC

CIK 0001274173

$198M6.3M0.09%Q1 2026 08

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP

CIK 0001164508

$198M6.3M0.11%Q1 2026 09

T. Rowe Price Investment Management, Inc.

CIK 0001897612

$164M5.2M0.11%Q1 2026 10

Delaware Management Holdings, Inc.

CIK 0000921739

$157M5.0M0.27%Q1 2026 11

TD ASSET MANAGEMENT INC

CIK 0001056053

$156M4.9M0.13%Q1 2026 12

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$143M4.5M0.01%Q1 2026 13

Epoch Investment Partners, Inc.

CIK 0001305841

$135M4.3M0.82%Q1 2026 14

BANK OF AMERICA CORP /DE/

CIK 0000070858

$122M3.9M0.01%Q1 2026 15

Boston Trust Walden Corp

CIK 0001534866

$102M3.2M0.84%Q1 2026 16

GOLDMAN SACHS GROUP INC

CIK 0000886982

$99M3.1M0.01%Q1 2026 17

VICTORY CAPITAL MANAGEMENT INC

CIK 0001040188

$98M3.1M0.06%Q1 2026 18

ALLIANCEBERNSTEIN L.P.

CIK 0001109448

$97M4.5M0.03%Q1 2026 19

GW&K Investment Management, LLC

CIK 0001082917

$97M3.1M0.86%Q1 2026 20

MORGAN STANLEY

CIK 0000895421

$96M3.0M0.01%Q1 2026

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