RhumbLine Advisers
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RhumbLine Advisers’s Magnolia Oil & Gas MGY Stock Holding History

RhumbLine Advisers’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 		$13.4M Sell
524,565
-52,704
-9% -$1.51M 0.01% 955
2026
Q1 		$18.2M Buy
577,269
+5,933
+1% +$159K 0.02% 750
2025
Q4 		$12.5M Sell
571,336
-7,029
-1% -$160K 0.01% 957
2025
Q3 		$13.8M Sell
578,365
-5,870
-1% -$140K 0.01% 929
2025
Q2 		$13.1M Buy
584,235
+58,824
+11% +$1.3M 0.01% 932
2025
Q1 		$13.3M Sell
525,411
-14,023
-3% -$340K 0.01% 893
2024
Q4 		$12.6M Buy
539,434
+8,308
+2% +$216K 0.01% 946
2024
Q3 		$13M Sell
531,126
-6,812
-1% -$172K 0.01% 941
2024
Q2 		$13.6M Sell
537,938
-7,013
-1% -$179K 0.01% 883
2024
Q1 		$14.1M Buy
544,951
+257,496
+90% +$5.65M 0.01% 876
2023
Q4 		$6.12M Sell
287,455
-7,424
-3% -$163K 0.01% 1298
2023
Q3 		$6.76M Buy
294,879
+3,009
+1% +$67.2K 0.01% 1186
2023
Q2 		$6.1M Buy
291,870
+31,539
+12% +$652K 0.01% 1262
2023
Q1 		$5.7M Buy
260,331
+5,958
+2% +$132K 0.01% 1240
2022
Q4 		$5.96M Buy
254,373
+15,072
+6% +$368K 0.01% 1188
2022
Q3 		$4.74M Buy
239,301
+24,747
+12% +$548K 0.01% 1263
2022
Q2 		$4.5M Buy
214,554
+49,539
+30% +$1.24M 0.01% 1296
2022
Q1 		$3.9M Buy
165,015
+5,592
+4% +$123K 0.01% 1465
2021
Q4 		$3.01M Buy
159,423
+2,745
+2% +$54.5K ﹤0.01% 1659
2021
Q3 		$2.79M Buy
156,678
+5,958
+4% +$90.1K ﹤0.01% 1706
2021
Q2 		$2.36M Buy
150,720
+2,130
+1% +$27.4K ﹤0.01% 1874
2021
Q1 		$1.71M Sell
148,590
-14,131
-9% -$147K ﹤0.01% 1981
2020
Q4 		$1.15M Buy
162,721
+9,254
+6% +$55.2K ﹤0.01% 2076
2020
Q3 		$793K Sell
153,467
-22,042
-13% -$137K ﹤0.01% 2081
2020
Q2 		$1.06M Sell
175,509
-1,219
-0.7% -$6.66K ﹤0.01% 2015
2020
Q1 		$707K Buy
176,728
+16,042
+10% +$138K ﹤0.01% 2024
2019
Q4 		$2.02M Buy
160,686
+5,501
+4% +$61.6K ﹤0.01% 1788
2019
Q3 		$1.72M Buy
155,185
+18,652
+14% +$200K ﹤0.01% 1819
2019
Q2 		$1.58M Buy
+136,533
New +$1.67M ﹤0.01% 1864

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 $3.38T AUM 44.17% 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

RhumbLine Advisers's MGY Position: Q2 2026 in Review

RhumbLine Advisers reduced its Magnolia Oil & Gas (MGY) stake by 9.1% in Q2 2026, selling an estimated $1.51M and leaving 524,565 shares worth $13.4M. The position accounts for 0.01% of the portfolio, ranked #955.

RhumbLine Advisers first reported a position in MGY in Q2 2019 and has held it in 29 quarters since. The position peaked at $18.2M in Q1 2026. 411 funds tracked by Wall St. Rank hold MGY as of Q2 2026.

  • RhumbLine Advisers held 524,565 shares of Magnolia Oil & Gas worth $13.4M as of Q2 2026.
  • RhumbLine Advisers sold 52,704 Magnolia Oil & Gas shares in Q2 2026, an estimated $1.51M.
  • Magnolia Oil & Gas made up 0.01% of RhumbLine Advisers's portfolio in Q2 2026, its #955 holding.
  • RhumbLine Advisers first reported a position in Magnolia Oil & Gas in Q2 2019 and has held it in 29 quarters since.
  • RhumbLine Advisers's Magnolia Oil & Gas position peaked at $18.2M in Q1 2026.
  • 411 funds tracked by Wall St. Rank held Magnolia Oil & Gas as of Q2 2026.

Based on RhumbLine Advisers's 13F filing for Q2 2026, filed 12 Aug 2026.