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 		$212K Sell
8,300
-5,500
-40% -$157K ﹤0.01% 10002
2026
Q1 		$436K Buy
+13,800
New +$369K ﹤0.01% 8380
2024
Q2 		– Sell
-13,200
Closed -$343K – 9873
2024
Q1 		$343K Sell
13,200
-8,200
-38% -$180K ﹤0.01% 7340
2023
Q4 		$456K Buy
21,400
+2,400
+13% +$52.5K ﹤0.01% 6914
2023
Q3 		$435K Sell
19,000
-4,100
-18% -$91.6K ﹤0.01% 6495
2023
Q2 		$483K Buy
23,100
+9,700
+72% +$201K ﹤0.01% 6368
2023
Q1 		$293K Buy
13,400
+4,400
+49% +$97.7K ﹤0.01% 7240
2022
Q4 		$211K Sell
9,000
-21,500
-70% -$524K ﹤0.01% 7594
2022
Q3 		$604K Buy
+30,500
New +$675K ﹤0.01% 6334
2022
Q2 		– Sell
-27,900
Closed -$660K – 10411
2022
Q1 		$660K Buy
27,900
+13,900
+99% +$305K ﹤0.01% 6968
2021
Q4 		$264K Sell
14,000
-3,200
-19% -$63.5K ﹤0.01% 8404
2021
Q3 		$306K Sell
17,200
-8,700
-34% -$132K ﹤0.01% 8141
2021
Q2 		$405K Buy
25,900
+4,200
+19% +$53.9K ﹤0.01% 7638
2021
Q1 		$249K Sell
21,700
-18,400
-46% -$192K ﹤0.01% 7954
2020
Q4 		$283K Buy
+40,100
New +$239K ﹤0.01% 6496

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. 410 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.
  • 410 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.