SEI Investments
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SEI Investments’s Geospace Technologies GEOS Stock Holding History

SEI Investments’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 		$1.35M Sell
199,365
-211,541
-51% -$1.82M ﹤0.01% 2147
2026
Q1 		$5.01M Buy
410,906
+213,950
+109% +$2.99M ﹤0.01% 1532
2025
Q4 		$3.33M Buy
+196,956
New +$3.96M ﹤0.01% 1588
2018
Q3 		– Sell
-18
Closed – – 2841
2018
Q2 		$0 Buy
+18
New +$208 ﹤0.01% 3678

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
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Marshall Wace
Marshall Wace London, United Kingdom $127B AUM 46.06% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
US Bancorp
US Bancorp Minneapolis, Minnesota $91.6B AUM 29.2% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
State Street
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

SEI Investments's GEOS Position: Q2 2026 in Review

SEI Investments reduced its Geospace Technologies (GEOS) stake by 51% in Q2 2026, selling an estimated $1.82M and leaving 199,365 shares worth $1.35M. The position accounts for ﹤0.01% of the portfolio, ranked #2147.

SEI Investments first reported a position in GEOS in Q2 2018 and has held it in 4 quarters since. The position peaked at $5.01M in Q1 2026. 83 funds tracked by Wall St. Rank hold GEOS as of Q2 2026.

  • SEI Investments held 199,365 shares of Geospace Technologies worth $1.35M as of Q2 2026.
  • SEI Investments sold 211,541 Geospace Technologies shares in Q2 2026, an estimated $1.82M.
  • Geospace Technologies made up ﹤0.01% of SEI Investments's portfolio in Q2 2026, its #2147 holding.
  • SEI Investments first reported a position in Geospace Technologies in Q2 2018 and has held it in 4 quarters since.
  • SEI Investments's Geospace Technologies position peaked at $5.01M in Q1 2026.
  • 83 funds tracked by Wall St. Rank held Geospace Technologies as of Q2 2026.

Based on SEI Investments's 13F filing for Q2 2026, filed 14 Aug 2026.