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Thompson Siegel & Walmsley’s Magnolia Oil & Gas MGY Stock Holding History

Thompson Siegel & Walmsley’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
2025
Q2 		– Sell
-9,777
Closed -$247K – 410
2025
Q1 		$247K Sell
9,777
-16
-0.2% -$388 ﹤0.01% 366
2024
Q4 		$229K Sell
9,793
-20
-0.2% -$520 ﹤0.01% 364
2024
Q3 		$240K Sell
9,813
-607
-6% -$15.3K ﹤0.01% 366
2024
Q2 		$264K Sell
10,420
-152,976
-94% -$3.9M ﹤0.01% 339
2024
Q1 		$4.24M Sell
163,396
-119,865
-42% -$2.63M 0.07% 215
2023
Q4 		$6.03M Sell
283,261
-37,361
-12% -$818K 0.1% 178
2023
Q3 		$7.34M Sell
320,622
-12,866
-4% -$287K 0.12% 160
2023
Q2 		$6.97M Sell
333,488
-10,741
-3% -$222K 0.11% 171
2023
Q1 		$7.53M Sell
344,229
-9,600
-3% -$213K 0.12% 161
2022
Q4 		$8.3M Sell
353,829
-34,686
-9% -$846K 0.13% 155
2022
Q3 		$7.7M Buy
388,515
+33,861
+10% +$749K 0.13% 162
2022
Q2 		$7.44M Buy
354,654
+79,980
+29% +$2M 0.12% 157
2022
Q1 		$6.5M Buy
274,674
+263,672
+2,397% +$5.79M 0.09% 192
2021
Q4 		$208K Sell
11,002
-20,023
-65% -$397K ﹤0.01% 368
2021
Q3 		$552K Sell
31,025
-402,071
-93% -$6.08M 0.01% 303
2021
Q2 		$6.77M Sell
433,096
-174,358
-29% -$2.24M 0.09% 172
2021
Q1 		$6.97M Sell
607,454
-187,189
-24% -$1.95M 0.1% 156
2020
Q4 		$5.61M Sell
794,643
-118,697
-13% -$708K 0.09% 170
2020
Q3 		$4.72M Buy
913,340
+84,734
+10% +$528K 0.09% 165
2020
Q2 		$5.02M Buy
828,606
+80,623
+11% +$440K 0.1% 151
2020
Q1 		$2.99M Buy
747,983
+148,901
+25% +$1.28M 0.07% 176
2019
Q4 		$7.54M Sell
599,082
-193,466
-24% -$2.17M 0.12% 144
2019
Q3 		$8.8M Sell
792,548
-207,677
-21% -$2.23M 0.14% 132
2019
Q2 		$11.6M Buy
1,000,225
+37,067
+4% +$455K 0.17% 116
2019
Q1 		$11.6M Buy
+963,158
New +$11.7M 0.16% 119

Other funds holding MGY

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
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
Janus Henderson Group
Janus Henderson Group London $209B AUM 37.72% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Macquarie Group
Macquarie Group Sydney, NSW 2000, Australia $23.2B AUM 40.19% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
AllianceBernstein
AllianceBernstein Nashville, Tennessee $302B AUM 26.44% 1-Year Est. Return

Thompson Siegel & Walmsley's MGY Position: Q2 2025 in Review

Thompson Siegel & Walmsley sold out of Magnolia Oil & Gas (MGY) in Q2 2025, closing a stake of 9,777 shares — an estimated $247K sold.

Thompson Siegel & Walmsley first reported a position in MGY in Q1 2019 and held it in 25 quarters. The position peaked at $11.6M in Q2 2019. 384 funds tracked by Wall St. Rank hold MGY as of Q2 2025.

  • Thompson Siegel & Walmsley reported no remaining Magnolia Oil & Gas position as of Q2 2025 after selling out during the quarter.
  • Thompson Siegel & Walmsley sold 9,777 Magnolia Oil & Gas shares in Q2 2025, an estimated $247K.
  • Thompson Siegel & Walmsley first reported a position in Magnolia Oil & Gas in Q1 2019 and held it in 25 quarters.
  • Thompson Siegel & Walmsley's Magnolia Oil & Gas position peaked at $11.6M in Q2 2019.
  • 384 funds tracked by Wall St. Rank held Magnolia Oil & Gas as of Q2 2025.

Based on Thompson Siegel & Walmsley's 13F filing for Q2 2025, filed 6 Aug 2025.