Marshall Wace’s Riley Exploration Permian REPX Stock Holding History

Marshall Wace’s Portfolio REPX Stock Details REPX Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	–	Sell	-306,556	Closed	-$11.2M	–	3634
2026 Q1	$11.2M	Buy	+306,556	New	+$9.13M	0.01%	924
2025 Q1	–	Sell	-31,582	Closed	-$1.01M	–	3019
2024 Q4	$1.01M	Sell	31,582 -19,094	-38%	-$589K	﹤0.01%	1734
2024 Q3	$1.34M	Sell	50,676 -33,975	-40%	-$936K	﹤0.01%	1525
2024 Q2	$2.4M	Buy	+84,651	New	+$2.33M	﹤0.01%	1281
2023 Q1	–	Sell	-21,028	Closed	-$619K	–	3038
2022 Q4	$619K	Sell	21,028 -21,425	-50%	-$609K	﹤0.01%	2290
2022 Q3	$805K	Sell	42,453 -18,268	-30%	-$448K	﹤0.01%	2514
2022 Q2	$1.47M	Buy	60,721 +16,764	+38%	+$429K	﹤0.01%	2211
2022 Q1	$1.1M	Buy	43,957 +5,969	+16%	+$160K	﹤0.01%	2410
2021 Q4	$734K	Buy	37,988 +796	+2%	+$17.7K	﹤0.01%	2620
2021 Q3	$873K	Buy	+37,192	New	+$791K	﹤0.01%	2101

Other funds holding REPX

YEPX

Yorktown Energy Partners XI New York $108M AUM 57.73% 1-Year Est. Return

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

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

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

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

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return

Two Sigma Investments New York $138B AUM 41.87% 1-Year Est. Return

First Eagle Investment Management New York $60.8B AUM 26.63% 1-Year Est. Return

Marshall Wace's REPX Position: Q2 2026 in Review

Marshall Wace sold out of Riley Exploration Permian (REPX) in Q2 2026, closing a stake of 306,556 shares — an estimated $11.2M sold.

Marshall Wace first reported a position in REPX in Q3 2021 and held it in 10 quarters. The position peaked at $11.2M in Q1 2026. 198 funds tracked by Wall St. Rank hold REPX as of Q2 2026.

Marshall Wace reported no remaining Riley Exploration Permian position as of Q2 2026 after selling out during the quarter.
Marshall Wace sold 306,556 Riley Exploration Permian shares in Q2 2026, an estimated $11.2M.
Marshall Wace first reported a position in Riley Exploration Permian in Q3 2021 and held it in 10 quarters.
Marshall Wace's Riley Exploration Permian position peaked at $11.2M in Q1 2026.
198 funds tracked by Wall St. Rank held Riley Exploration Permian as of Q2 2026.

Based on Marshall Wace's 13F filing for Q2 2026, filed 13 Aug 2026.