CM
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Castleark Management’s Magnolia Oil & Gas MGY Stock Holding History

Castleark Management’s Portfolio MGY Stock Details MGY Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$2.36M Hold
74,790
– – 0.08% 195
2025
Q4 		$1.64M Hold
74,790
– – 0.05% 209
2025
Q3 		$1.79M Hold
74,790
– – 0.05% 202
2025
Q2 		$1.68M Sell
74,790
-9,040
-11% -$200K 0.05% 188
2025
Q1 		$2.12M Hold
83,830
– – 0.07% 178
2024
Q4 		$1.96M Sell
83,830
-96,900
-54% -$2.52M 0.07% 186
2024
Q3 		$4.41M Buy
180,730
+96,900
+116% +$2.44M 0.18% 130
2024
Q2 		$2.12M Hold
83,830
– – 0.09% 167
2024
Q1 		$2.18M Hold
83,830
– – 0.09% 174
2023
Q4 		$1.78M Hold
83,830
– – 0.08% 181
2023
Q3 		$1.92M Buy
83,830
+21,740
+35% +$486K 0.1% 165
2023
Q2 		$1.3M Sell
62,090
-19,770
-24% -$409K 0.06% 181
2023
Q1 		$1.79M Sell
81,860
-88,230
-52% -$1.96M 0.09% 165
2022
Q4 		$3.99M Sell
170,090
-70,660
-29% -$1.72M 0.21% 115
2022
Q3 		$4.77M Sell
240,750
-24,100
-9% -$533K 0.27% 92
2022
Q2 		$5.56M Sell
264,850
-7,210
-3% -$180K 0.3% 78
2022
Q1 		$6.43M Buy
272,060
+169,730
+166% +$3.73M 0.28% 89
2021
Q4 		$1.93M Sell
102,330
-8,670
-8% -$172K 0.07% 195
2021
Q3 		$1.98M Buy
+111,000
New +$1.68M 0.08% 185

Other funds holding MGY

BlackRock
BlackRock New York $5.7T AUM 30.48% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
American Century Companies
American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
Janus Henderson Group
Janus Henderson Group London, United Kingdom $209B AUM 37.72% 1-Year Est. Return
Arrowstreet Capital
Arrowstreet Capital Boston, Massachusetts $185B AUM 39.58% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return
NAMI
Nomura Asset Management International Philadelphia, Pennsylvania $58.4B AUM