Magnolia Oil & Gas Corporation (MGY)

Highly Crowded

Held by 379 of 5,944 reporting institutions (96th percentile) — extremely crowded.

Data as of Q1 2026

Institutional Ownership

100.00%

QoQ Change

N/A

Total Value

$5.8T

Shares Outstanding

184.9M

Crowding AnalysisHighly Crowded

Holders379of 5,944

Avg: 68

Uncrowded96th percentileCrowded

Institutional Activity

Buy/Sell Ratio1.19x

90th percentile

223 buying187 selling

+75

New

-51

Closed

+4.3M

Net shares

Holding Period Distribution

estimate

Median: 4 QAvg: 3.8 QHolders: 379

Ownership Concentration

Top 5: 35.6%Top 10: 50.8%

BlackRock,15.1%

VANGUARD PORTFOLIO MANAGEMENT6.6%

AMERICAN CENTURY COMPANIES5.4%

STATE STREET4.8%

VANGUARD CAPITAL MANAGEMENT3.7%

Others (374)64.4%

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Conviction-Weighted Ownership

Median weight: 0.07%Avg weight: 0.09%Max: 0.27%High conviction (>1%): 0

BlackRock,

VANGUARD PORTFOLIO MANAGEMENT

AMERICAN CENTURY COMPANIES

STATE STREET

VANGUARD CAPITAL MANAGEMENT

DIMENSIONAL FUND ADVISORS

JANUS HENDERSON GROUP

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP

T. Rowe Price Investment Management,

NOMURA ASSET MANAGEMENT INTERNATIONAL

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Whale Moves Timeline (8 Quarters)

Biggest dollar-value position changes among top 10 holders

NEWVANGUARD PORTFOLIO MANAGEMENT$410M13.0M shr

NEWVANGUARD CAPITAL MANAGEMENT$227M7.2M shr

NEWARROWSTREET CAPITAL, LIMITED PARTNERSHIP$198M6.3M shr

BOUGHTBlackRock$57M1.8M shr

BOUGHTSTATE STREET$22M695K shr

NEWTD ASSET MANAGEMENT$124M5.7M shr

NEWEpoch Investment Partners$117M5.3M shr

NEWNOMURA ASSET MANAGEMENT INTERNATIONAL$109M5.0M shr

SOLDAMERICAN CENTURY COMPANIES$19M858K shr

BOUGHTDIMENSIONAL FUND ADVISORS$6M265K shr

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Institutional Trends (8 Quarters)

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Institutional Holders

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