Mariner
MGY icon

Mariner’s Magnolia Oil & Gas MGY Stock Holding History

Mariner’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
Q2 		$1.29M Sell
50,562
-399
-0.8% -$11.4K ﹤0.01% 1758
2026
Q1 		$1.61M Buy
50,961
+17,583
+53% +$471K ﹤0.01% 1652
2025
Q4 		$731K Sell
33,378
-4,390
-12% -$99.8K ﹤0.01% 2180
2025
Q3 		$902K Sell
37,768
-4,108
-10% -$98K ﹤0.01% 1994
2025
Q2 		$941K Sell
41,876
-4,446
-10% -$98.5K ﹤0.01% 1838
2025
Q1 		$1.17M Buy
46,322
+3,093
+7% +$75K ﹤0.01% 1581
2024
Q4 		$1.01M Buy
43,229
+762
+2% +$19.8K ﹤0.01% 1644
2024
Q3 		$1.04M Sell
42,467
-581
-1% -$14.6K ﹤0.01% 1574
2024
Q2 		$1.09M Buy
43,048
+4,731
+12% +$121K ﹤0.01% 1447
2024
Q1 		$994K Sell
38,317
-1,499
-4% -$32.9K ﹤0.01% 1503
2023
Q4 		$848K Buy
39,816
+1,337
+3% +$29.3K ﹤0.01% 1549
2023
Q3 		$882K Buy
38,479
+389
+1% +$8.69K ﹤0.01% 1389
2023
Q2 		$796K Sell
38,090
-1,902
-5% -$39.3K ﹤0.01% 1437
2023
Q1 		$873K Buy
39,992
+2,832
+8% +$62.9K ﹤0.01% 1348
2022
Q4 		$871K Buy
37,160
+722
+2% +$17.6K ﹤0.01% 1315
2022
Q3 		$722K Buy
36,438
+8,836
+32% +$196K ﹤0.01% 1214
2022
Q2 		$579K Buy
+27,602
New +$690K ﹤0.01% 1077

Other funds holding MGY

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
JT
Jupiter Topco New York $245B AUM
Arrowstreet Capital
Arrowstreet Capital Boston, Massachusetts $225B AUM 49.49% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return
AllianceBernstein
AllianceBernstein Nashville, Tennessee $302B AUM 26.44% 1-Year Est. Return

Mariner's MGY Position: Q2 2026 in Review

Mariner reduced its Magnolia Oil & Gas (MGY) stake by 0.78% in Q2 2026, selling an estimated $11.4K and leaving 50,562 shares worth $1.29M. The position accounts for ﹤0.01% of the portfolio, ranked #1758.

Mariner first reported a position in MGY in Q2 2022 and has held it in 17 quarters since. The position peaked at $1.61M in Q1 2026. 408 funds tracked by Wall St. Rank hold MGY as of Q2 2026.

  • Mariner held 50,562 shares of Magnolia Oil & Gas worth $1.29M as of Q2 2026.
  • Mariner sold 399 Magnolia Oil & Gas shares in Q2 2026, an estimated $11.4K.
  • Magnolia Oil & Gas made up ﹤0.01% of Mariner's portfolio in Q2 2026, its #1758 holding.
  • Mariner first reported a position in Magnolia Oil & Gas in Q2 2022 and has held it in 17 quarters since.
  • Mariner's Magnolia Oil & Gas position peaked at $1.61M in Q1 2026.
  • 408 funds tracked by Wall St. Rank held Magnolia Oil & Gas as of Q2 2026.

Based on Mariner's 13F filing for Q2 2026, filed 13 Aug 2026.