AI Holders Summary · Q2 2026

436 institutions reported MGY in Q2 2026. BlackRock, Inc. leads at 21.8% 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

$818M32.0M0.01%Q2 2026 02

Vanguard Portfolio Management

CIK 0002100121· Index

$392M15.3M0.02%Q2 2026 03

AMERICAN CENTURY COMPANIES INC

CIK 0000748054

$282M11.0M0.12%Q2 2026 04

STATE STREET CORP

CIK 0000093751

$254M9.9M0.01%Q2 2026 05

JANUS HENDERSON GROUP PLC

CIK 0001274173

$198M6.3M0.09%Q1 2026 06

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$196M7.7M0.00%Q2 2026 07

DIMENSIONAL FUND ADVISORS LP

CIK 0000354204· Quasi-passive

$182M7.1M0.03%Q2 2026 08

Jupiter Topco LLC

CIK 0002146052

$164M6.4M0.07%Q2 2026 09

T. Rowe Price Investment Management, Inc.

CIK 0001897612

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

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP

CIK 0001164508

$140M5.5M0.06%Q2 2026 11

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$123M4.8M0.01%Q2 2026 12

Delaware Management Holdings, Inc.

CIK 0000921739

$110M4.3M0.17%Q2 2026 13

BANK OF AMERICA CORP /DE/

CIK 0000070858

$109M4.3M0.01%Q2 2026 14

TD ASSET MANAGEMENT INC

CIK 0001056053

$101M3.9M0.09%Q2 2026 15

ALLIANCEBERNSTEIN L.P.

CIK 0001109448

$97M4.5M0.03%Q1 2026 16

GW&K Investment Management, LLC

CIK 0001082917

$97M3.1M0.86%Q1 2026 17

Epoch Investment Partners, Inc.

CIK 0001305841

$91M3.6M0.52%Q2 2026 18

MORGAN STANLEY

CIK 0000895421

$88M3.4M0.00%Q2 2026 19

VICTORY CAPITAL MANAGEMENT INC

CIK 0001040188

$76M3.0M0.04%Q2 2026 20

SYSTEMATIC FINANCIAL MANAGEMENT LP

CIK 0001085936

$71M2.8M1.42%Q2 2026

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