Brown Brothers Harriman & Co’s Magnolia Oil & Gas MGY Stock Holding History

Brown Brothers Harriman & Co’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 Q1	$21.3K	Sell	674 -42	-6%	-$1.12K	﹤0.01%	1221
2025 Q4	$15.7K	Buy	+716	New	+$16.3K	﹤0.01%	1251
2025 Q1	–	Sell	-62	Closed	-$1.45K	–	1405
2024 Q4	$1.45K	Hold	62	–	–	﹤0.01%	1361
2024 Q3	$1.51K	Buy	+62	New	+$1.56K	﹤0.01%	1331
2023 Q2	–	Sell	-82	Closed	-$1.79K	–	1284
2023 Q1	$1.79K	Buy	+82	New	+$1.82K	﹤0.01%	1163
2020 Q2	–	Sell	-147	Closed	-$1K	–	1108
2020 Q1	$1K	Buy	+147	New	+$1.26K	﹤0.01%	1020

Other funds holding MGY

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

Janus Henderson Group London, United Kingdom $209B AUM 37.72% 1-Year Est. Return

Arrowstreet Capital Boston, Massachusetts $185B AUM 39.58% 1-Year Est. Return

T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return

NAMI

Nomura Asset Management International Philadelphia, Pennsylvania $58.4B AUM

Brown Brothers Harriman & Co's MGY Position: Q1 2026 in Review

Brown Brothers Harriman & Co reduced its Magnolia Oil & Gas (MGY) stake by 5.9% in Q1 2026, selling an estimated $1.12K and leaving 674 shares worth $21.3K. The position accounts for ﹤0.01% of the portfolio, ranked #1221.

Brown Brothers Harriman & Co first reported a position in MGY in Q1 2020 and has held it in 6 quarters since. 404 funds tracked by Wall St. Rank hold MGY as of Q1 2026.

Brown Brothers Harriman & Co held 674 shares of Magnolia Oil & Gas worth $21.3K as of Q1 2026.
Brown Brothers Harriman & Co sold 42 Magnolia Oil & Gas shares in Q1 2026, an estimated $1.12K.
Magnolia Oil & Gas made up ﹤0.01% of Brown Brothers Harriman & Co's portfolio in Q1 2026, its #1221 holding.
Brown Brothers Harriman & Co first reported a position in Magnolia Oil & Gas in Q1 2020 and has held it in 6 quarters since.
404 funds tracked by Wall St. Rank held Magnolia Oil & Gas as of Q1 2026.

Based on Brown Brothers Harriman & Co's 13F filing for Q1 2026, filed 14 May 2026.