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
Q1 		$3.25M Buy
+103,100
New +$2.76M ﹤0.01% 4198
2024
Q2 		– Sell
-20,200
Closed -$524K – 9874
2024
Q1 		$524K Buy
+20,200
New +$443K ﹤0.01% 6589
2023
Q3 		– Sell
-25,700
Closed -$537K – 9090
2023
Q2 		$537K Buy
25,700
+6,200
+32% +$128K ﹤0.01% 6208
2023
Q1 		$427K Sell
19,500
-8,200
-30% -$182K ﹤0.01% 6577
2022
Q4 		$650K Sell
27,700
-43,300
-61% -$1.06M ﹤0.01% 5694
2022
Q3 		$1.41M Buy
71,000
+39,000
+122% +$863K ﹤0.01% 4809
2022
Q2 		$672K Sell
32,000
-31,100
-49% -$777K ﹤0.01% 6195
2022
Q1 		$1.49M Sell
63,100
-104,900
-62% -$2.3M ﹤0.01% 5309
2021
Q4 		$3.17M Buy
168,000
+6,900
+4% +$137K ﹤0.01% 3592
2021
Q3 		$2.87M Buy
161,100
+105,500
+190% +$1.59M ﹤0.01% 3744
2021
Q2 		$869K Buy
55,600
+41,800
+303% +$537K ﹤0.01% 6130
2021
Q1 		$158K Sell
13,800
-3,800
-22% -$39.6K ﹤0.01% 8431
2020
Q4 		$124K Buy
17,600
+5,000
+40% +$29.8K ﹤0.01% 7140
2020
Q3 		$65K Buy
+12,600
New +$78.4K ﹤0.01% 6862

Other funds holding MGY

BlackRock
BlackRock New York $5.72T 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

Jane Street's MGY Position: Q1 2026 in Review

Jane Street reduced its Magnolia Oil & Gas (MGY) stake by 23% in Q1 2026, selling an estimated $2.25M and leaving 277,770 shares worth $8.77M. The position accounts for ﹤0.01% of the portfolio, ranked #2697.

Jane Street first reported a position in MGY in Q3 2019 and has held it in 26 quarters since. The position peaked at $26.8M in Q1 2025. 405 funds tracked by Wall St. Rank hold MGY as of Q1 2026.

  • Jane Street held 277,770 shares of Magnolia Oil & Gas worth $8.77M as of Q1 2026.
  • Jane Street sold 84,093 Magnolia Oil & Gas shares in Q1 2026, an estimated $2.25M.
  • Magnolia Oil & Gas made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #2697 holding.
  • Jane Street first reported a position in Magnolia Oil & Gas in Q3 2019 and has held it in 26 quarters since.
  • Jane Street's Magnolia Oil & Gas position peaked at $26.8M in Q1 2025.
  • 405 funds tracked by Wall St. Rank held Magnolia Oil & Gas as of Q1 2026.

Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.