13F Insight
DOSSIER · 13F Holders · Q1 2026Energy · Crude Petroleum & Natural GasDefensive growthQuality
MGY

MAGNOLIA OIL & GAS CORP

423 institutions still hold MAGNOLIA OIL & GAS CORP as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 559663109·Crude Petroleum & Natural Gas·423 13F holders·last filed Mar 31, 2026
Market cap
—
▼ 6.0%
vs prior quarter
13F value held
$4.2B
49.0% inst. owned
of float
Holders
423
+18 QoQ
filers reporting
Activity
+24 / −66
+920 added · −758 reduced
this quarter
Concentration
22.19%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q1 2026

423 institutions reported MGY in Q1 2026. BlackRock, Inc. leads at 22.2% of the visible book. +18 net new institutions vs prior quarter — accumulation reading.

Top holders

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

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$931M29.5M0.02%Q1 202602
Vanguard Portfolio Management
CIK 0002100121
$410M13.0M0.02%Q1 202603
AMERICAN CENTURY COMPANIES INC
CIK 0000748054
$332M10.5M0.17%Q1 202604
STATE STREET CORP
CIK 0000093751
$300M9.5M0.01%Q1 202605
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$227M7.2M0.01%Q1 202606
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$222M7.0M0.05%Q1 202607
JANUS HENDERSON GROUP PLC
CIK 0001274173
$198M6.3M0.09%Q1 202608
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
CIK 0001164508
$198M6.3M0.11%Q1 202609
Delaware Management Holdings, Inc.
CIK 0000921739
$157M5.0M0.27%Q1 202610
TD ASSET MANAGEMENT INC
CIK 0001056053
$156M4.9M0.13%Q1 202611
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$143M4.5M0.01%Q1 202612
Epoch Investment Partners, Inc.
CIK 0001305841
$135M4.3M0.82%Q1 202613
BANK OF AMERICA CORP /DE/
CIK 0000070858
$122M3.9M0.01%Q1 202614
Boston Trust Walden Corp
CIK 0001534866
$102M3.2M0.84%Q1 202615
GOLDMAN SACHS GROUP INC
CIK 0000886982
$99M3.1M0.01%Q1 202616
VICTORY CAPITAL MANAGEMENT INC
CIK 0001040188
$98M3.1M0.06%Q1 202617
ALLIANCEBERNSTEIN L.P.
CIK 0001109448
$97M4.5M0.03%Q1 202618
MORGAN STANLEY
CIK 0000895421
$96M3.0M0.01%Q1 202619
SYSTEMATIC FINANCIAL MANAGEMENT LP
CIK 0001085936
$89M2.8M2.04%Q1 202620
SILVERCREST ASSET MANAGEMENT GROUP LLC
CIK 0001232395
$84M2.7M0.61%Q1 2026
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