Simplex Trading
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Simplex Trading’s Magnolia Oil & Gas MGY Stock Holding History

Simplex Trading’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 		$432K Sell
16,880
-96
-0.6% -$2.74K ﹤0.01% 3786
2026
Q1 		$536K Buy
+16,976
New +$454K ﹤0.01% 3167
2025
Q4 		– Sell
-12,053
Closed -$274K – 9453
2025
Q3 		$287K Sell
12,053
-3,048
-20% -$72.7K ﹤0.01% 4514
2025
Q2 		$339K Buy
+15,101
New +$334K ﹤0.01% 3921
2025
Q1 		– Sell
-1,384
Closed -$33.5K – 9205
2024
Q4 		$32K Sell
1,384
-7,308
-84% -$190K ﹤0.01% 6289
2024
Q3 		$212K Buy
8,692
+4,914
+130% +$124K ﹤0.01% 4465
2024
Q2 		$95K Buy
+3,778
New +$96.4K ﹤0.01% 5428
2023
Q3 		– Sell
-5,431
Closed -$121K – 9362
2023
Q2 		$113K Buy
5,431
+3,440
+173% +$71.1K ﹤0.01% 4936
2023
Q1 		$43K Buy
1,991
+1,292
+185% +$28.7K ﹤0.01% 6098
2022
Q4 		$16K Sell
699
-60,419
-99% -$1.47M ﹤0.01% 7086
2022
Q3 		$1.21M Sell
61,118
-8,741
-13% -$193K ﹤0.01% 2432
2022
Q2 		$1.47M Buy
69,859
+68,825
+6,656% +$1.72M ﹤0.01% 2189
2022
Q1 		$24K Sell
1,034
-488
-32% -$10.7K ﹤0.01% 8037
2021
Q4 		$28K Sell
1,522
-18,911
-93% -$375K ﹤0.01% 7992
2021
Q3 		$328K Hold
20,433
– – ﹤0.01% 4760
2021
Q2 		$319K Buy
+20,433
New +$262K ﹤0.01% 4876
2020
Q4 		– Sell
-10
Closed -$60 – 8788
2020
Q3 		$0 Buy
+10
New +$62 ﹤0.01% 8189
2019
Q4 		– Sell
-21,968
Closed -$246K – 7689
2019
Q3 		$243K Buy
21,968
+19,169
+685% +$206K ﹤0.01% 3367
2019
Q2 		$32K Buy
2,799
+1,924
+220% +$23.6K ﹤0.01% 5222
2019
Q1 		$10K Buy
+875
New +$10.7K ﹤0.01% 6158

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

Simplex Trading's MGY Position: Q2 2026 in Review

Simplex Trading reduced its Magnolia Oil & Gas (MGY) stake by 0.57% in Q2 2026, selling an estimated $2.74K and leaving 16,880 shares worth $432K. The position accounts for ﹤0.01% of the portfolio, ranked #3786.

Simplex Trading first reported a position in MGY in Q1 2019 and has held it in 20 quarters since. The position peaked at $1.47M in Q2 2022. 408 funds tracked by Wall St. Rank hold MGY as of Q2 2026.

  • Simplex Trading held 16,880 shares of Magnolia Oil & Gas worth $432K as of Q2 2026.
  • Simplex Trading sold 96 Magnolia Oil & Gas shares in Q2 2026, an estimated $2.74K.
  • Magnolia Oil & Gas made up ﹤0.01% of Simplex Trading's portfolio in Q2 2026, its #3786 holding.
  • Simplex Trading first reported a position in Magnolia Oil & Gas in Q1 2019 and has held it in 20 quarters since.
  • Simplex Trading's Magnolia Oil & Gas position peaked at $1.47M in Q2 2022.
  • 408 funds tracked by Wall St. Rank held Magnolia Oil & Gas as of Q2 2026.

Based on Simplex Trading's 13F filing for Q2 2026, filed 12 Aug 2026.