Diamond Hill Capital Management’s Magnolia Oil & Gas MGY Stock Holding History

Diamond Hill Capital Management’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	$12M	Buy	468,704 +143,683	+44%	+$4.1M	0.1%	123
2026 Q1	$10.3M	Sell	325,021 -89,796	-22%	-$2.4M	0.06%	125
2025 Q4	$9.08M	Buy	414,817 +281,234	+211%	+$6.39M	0.05%	133
2025 Q3	$3.19M	Buy	133,583 +13,203	+11%	+$315K	0.02%	158
2025 Q2	$2.71M	Sell	120,380 -8,329	-6%	-$184K	0.01%	161
2025 Q1	$3.25M	Sell	128,709 -389,708	-75%	-$9.45M	0.01%	146
2024 Q4	$12.1M	Sell	518,417 -47,522	-8%	-$1.23M	0.05%	123
2024 Q3	$13.8M	Buy	565,939 +5,536	+1%	+$139K	0.06%	120
2024 Q2	$14.2M	Buy	+560,403	New	+$14.3M	0.06%	119

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

Diamond Hill Capital Management's MGY Position: Q2 2026 in Review

Diamond Hill Capital Management increased its Magnolia Oil & Gas (MGY) stake by 44% in Q2 2026, buying an estimated $4.1M and bringing the position to 468,704 shares worth $12M. The position accounts for 0.1% of the portfolio, ranked #123.

Diamond Hill Capital Management first reported a position in MGY in Q2 2024 and has held it in 9 quarters since. The position peaked at $14.2M in Q2 2024. 408 funds tracked by Wall St. Rank hold MGY as of Q2 2026.

Diamond Hill Capital Management held 468,704 shares of Magnolia Oil & Gas worth $12M as of Q2 2026.
Diamond Hill Capital Management bought 143,683 Magnolia Oil & Gas shares in Q2 2026, an estimated $4.1M.
Magnolia Oil & Gas made up 0.1% of Diamond Hill Capital Management's portfolio in Q2 2026, its #123 holding.
Diamond Hill Capital Management first reported a position in Magnolia Oil & Gas in Q2 2024 and has held it in 9 quarters since.
Diamond Hill Capital Management's Magnolia Oil & Gas position peaked at $14.2M in Q2 2024.
408 funds tracked by Wall St. Rank held Magnolia Oil & Gas as of Q2 2026.

Based on Diamond Hill Capital Management's 13F filing for Q2 2026, filed 6 Aug 2026.