Marshall Wace’s Geospace Technologies GEOS Stock Holding History

Marshall Wace’s Portfolio GEOS Stock Details GEOS Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$2.04M	Buy	301,916 +113,110	+60%	+$975K	﹤0.01%	1842
2026 Q1	$2.3M	Buy	188,806 +177,021	+1,502%	+$2.47M	﹤0.01%	1706
2025 Q4	$199K	Buy	+11,785	New	+$237K	﹤0.01%	2599
2024 Q4	–	Sell	-44,415	Closed	-$459K	–	2733
2024 Q3	$459K	Sell	44,415 -47,852	-52%	-$457K	﹤0.01%	1950
2024 Q2	$829K	Sell	92,267 -2,400	-3%	-$27K	﹤0.01%	1773
2024 Q1	$1.25M	Buy	94,667 +30,411	+47%	+$408K	﹤0.01%	1562
2023 Q4	$833K	Buy	64,256 +13,089	+26%	+$160K	﹤0.01%	1535
2023 Q3	$663K	Buy	+51,167	New	+$483K	﹤0.01%	1634
2022 Q3	–	Sell	-41,900	Closed	-$199K	–	3508
2022 Q2	$199K	Buy	+41,900	New	+$239K	﹤0.01%	3171
2020 Q1	–	Sell	-30,469	Closed	-$511K	–	1799
2019 Q4	$511K	Buy	+30,469	New	+$463K	﹤0.01%	1162

Other funds holding GEOS

TCM

Tieton Capital Management Yakima, Washington $348M AUM 45.13% 1-Year Est. Return

GWI

Grace & White Inc Ny, New York $632M AUM 34.34% 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

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

US Bancorp Minneapolis, Minnesota $91.6B AUM 29.2% 1-Year Est. Return

SEI Investments Oaks, Pennsylvania $113B AUM 34.64% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

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

DLP

De Lisle Partners Poole, United Kingdom $916M AUM 54.05% 1-Year Est. Return

Marshall Wace's GEOS Position: Q2 2026 in Review

Marshall Wace increased its Geospace Technologies (GEOS) stake by 60% in Q2 2026, buying an estimated $975K and bringing the position to 301,916 shares worth $2.04M. The position accounts for ﹤0.01% of the portfolio, ranked #1842.

Marshall Wace first reported a position in GEOS in Q4 2019 and has held it in 10 quarters since. The position peaked at $2.3M in Q1 2026. 83 funds tracked by Wall St. Rank hold GEOS as of Q2 2026.

Marshall Wace held 301,916 shares of Geospace Technologies worth $2.04M as of Q2 2026.
Marshall Wace bought 113,110 Geospace Technologies shares in Q2 2026, an estimated $975K.
Geospace Technologies made up ﹤0.01% of Marshall Wace's portfolio in Q2 2026, its #1842 holding.
Marshall Wace first reported a position in Geospace Technologies in Q4 2019 and has held it in 10 quarters since.
Marshall Wace's Geospace Technologies position peaked at $2.3M in Q1 2026.
83 funds tracked by Wall St. Rank held Geospace Technologies as of Q2 2026.

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