XTX Topco’s Magnolia Oil & Gas MGY Stock Holding History

XTX Topco’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	$309K	Buy	+12,065	New	+$345K	﹤0.01%	2896
2026 Q1	–	Sell	-219,040	Closed	-$4.79M	–	4143
2025 Q4	$4.79M	Buy	219,040 +187,703	+599%	+$4.27M	0.13%	143
2025 Q3	$748K	Buy	+31,337	New	+$747K	0.04%	768
2025 Q2	–	Sell	-82,366	Closed	-$2.08M	–	2854
2025 Q1	$2.08M	Buy	+82,366	New	+$2M	0.11%	246
2024 Q4	–	Sell	-25,840	Closed	-$631K	–	2689
2024 Q3	$631K	Buy	25,840 +12,420	+93%	+$313K	0.05%	660
2024 Q2	$340K	Sell	13,420 -3,269	-20%	-$83.4K	0.03%	879
2024 Q1	$433K	Buy	16,689 +90	+0.5%	+$1.97K	0.06%	574
2023 Q4	$353K	Buy	+16,599	New	+$363K	0.08%	497
2021 Q3	–	Sell	-10,742	Closed	-$168K	–	915
2021 Q2	$168K	Buy	+10,742	New	+$138K	0.06%	584

Other funds holding MGY

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

Jupiter Topco New York $245B AUM

Arrowstreet Capital Boston, Massachusetts $225B AUM 49.49% 1-Year Est. Return

T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return

AllianceBernstein Nashville, Tennessee $302B AUM 26.44% 1-Year Est. Return

XTX Topco's MGY Position: Q2 2026 in Review

XTX Topco opened a new position in Magnolia Oil & Gas (MGY) in Q2 2026: 12,065 shares worth $309K. The stake represents ﹤0.01% of the portfolio and ranks #2896 among its holdings. This is a return to the name: XTX Topco previously reported a position in MGY as recently as Q4 2025.

XTX Topco first reported a position in MGY in Q2 2021 and has held it in 9 quarters since. The position peaked at $4.79M in Q4 2025. 408 funds tracked by Wall St. Rank hold MGY as of Q2 2026.

XTX Topco held 12,065 shares of Magnolia Oil & Gas worth $309K as of Q2 2026.
Magnolia Oil & Gas was a new XTX Topco position in Q2 2026.
Magnolia Oil & Gas made up ﹤0.01% of XTX Topco's portfolio in Q2 2026, its #2896 holding.
XTX Topco first reported a position in Magnolia Oil & Gas in Q2 2021 and has held it in 9 quarters since.
XTX Topco's Magnolia Oil & Gas position peaked at $4.79M in Q4 2025.
408 funds tracked by Wall St. Rank held Magnolia Oil & Gas as of Q2 2026.

Based on XTX Topco's 13F filing for Q2 2026, filed 14 Aug 2026.