Jane Street
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Jane Street’s Magnolia Oil & Gas MGY Stock Holding History

Jane Street’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 		$214K Sell
8,349
-269,421
-97% -$7.69M ﹤0.01% 9982
2026
Q1 		$8.77M Sell
277,770
-84,093
-23% -$2.25M ﹤0.01% 2697
2025
Q4 		$7.92M Sell
361,863
-227,162
-39% -$5.17M ﹤0.01% 2617
2025
Q3 		$14.1M Sell
589,025
-124,254
-17% -$2.96M ﹤0.01% 2011
2025
Q2 		$16M Sell
713,279
-346,056
-33% -$7.66M ﹤0.01% 1655
2025
Q1 		$26.8M Buy
1,059,335
+987,896
+1,383% +$23.9M 0.01% 1071
2024
Q4 		$1.67M Sell
71,439
-16,238
-19% -$422K ﹤0.01% 4442
2024
Q3 		$2.14M Sell
87,677
-287,490
-77% -$7.24M ﹤0.01% 4346
2024
Q2 		$9.51M Buy
375,167
+291,026
+346% +$7.42M ﹤0.01% 2117
2024
Q1 		$2.18M Sell
84,141
-25,429
-23% -$558K ﹤0.01% 3971
2023
Q4 		$2.33M Buy
109,570
+54,111
+98% +$1.18M ﹤0.01% 4061
2023
Q3 		$1.27M Buy
55,459
+21,161
+62% +$473K ﹤0.01% 4800
2023
Q2 		$717K Sell
34,298
-1,184,352
-97% -$24.5M ﹤0.01% 5756
2023
Q1 		$26.7M Buy
1,218,650
+1,209,035
+12,574% +$26.8M 0.01% 824
2022
Q4 		$225K Sell
9,615
-39,233
-80% -$957K ﹤0.01% 7480
2022
Q3 		$968K Sell
48,848
-216,353
-82% -$4.79M ﹤0.01% 5460
2022
Q2 		$5.57M Buy
265,201
+241,839
+1,035% +$6.05M ﹤0.01% 2514
2022
Q1 		$553K Sell
23,362
-40,561
-63% -$891K ﹤0.01% 7277
2021
Q4 		$1.21M Buy
63,923
+26,553
+71% +$527K ﹤0.01% 5514
2021
Q3 		$665K Sell
37,370
-6,981
-16% -$106K ﹤0.01% 6741
2021
Q2 		$693K Sell
44,351
-6,051
-12% -$77.7K ﹤0.01% 6612
2021
Q1 		$578K Sell
50,402
-4,525
-8% -$47.1K ﹤0.01% 6546
2020
Q4 		$388K Buy
54,927
+23,938
+77% +$143K ﹤0.01% 6079
2020
Q3 		$160K Buy
+30,989
New +$193K ﹤0.01% 6559
2020
Q2 		– Sell
-17,741
Closed -$71K – 7383
2020
Q1 		$71K Buy
17,741
+7,307
+70% +$62.9K ﹤0.01% 5029
2019
Q4 		$131K Sell
10,434
-16
-0.2% -$179 ﹤0.01% 4814
2019
Q3 		$116K Buy
+10,450
New +$112K ﹤0.01% 4773

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

Jane Street's MGY Position: Q2 2026 in Review

Jane Street reduced its Magnolia Oil & Gas (MGY) stake by 97% in Q2 2026, selling an estimated $7.69M and leaving 8,349 shares worth $214K. The position accounts for ﹤0.01% of the portfolio, ranked #9982.

Jane Street first reported a position in MGY in Q3 2019 and has held it in 27 quarters since. The position peaked at $26.8M in Q1 2025. 408 funds tracked by Wall St. Rank hold MGY as of Q2 2026.

  • Jane Street held 8,349 shares of Magnolia Oil & Gas worth $214K as of Q2 2026.
  • Jane Street sold 269,421 Magnolia Oil & Gas shares in Q2 2026, an estimated $7.69M.
  • Magnolia Oil & Gas made up ﹤0.01% of Jane Street's portfolio in Q2 2026, its #9982 holding.
  • Jane Street first reported a position in Magnolia Oil & Gas in Q3 2019 and has held it in 27 quarters since.
  • Jane Street's Magnolia Oil & Gas position peaked at $26.8M in Q1 2025.
  • 408 funds tracked by Wall St. Rank held Magnolia Oil & Gas as of Q2 2026.

Based on Jane Street's 13F filing for Q2 2026, filed 14 Aug 2026.