Citadel Advisors
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Citadel Advisors’s Geospace Technologies GEOS Stock Holding History

Citadel Advisors’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 		$393K Buy
58,018
+25,300
+77% +$218K ﹤0.01% 10476
2026
Q1 		$399K Sell
32,718
-26,008
-44% -$363K ﹤0.01% 9818
2025
Q4 		$993K Buy
58,726
+7,904
+16% +$159K ﹤0.01% 7406
2025
Q3 		$964K Buy
+50,822
New +$823K ﹤0.01% 7609
2025
Q2 		– Sell
-35,507
Closed -$265K – 13423
2025
Q1 		$256K Buy
+35,507
New +$305K ﹤0.01% 9930
2024
Q1 		– Sell
-4,499
Closed -$58.3K – 14878
2023
Q4 		$58.3K Sell
4,499
-379
-8% -$4.63K ﹤0.01% 11627
2023
Q3 		$63.2K Sell
4,878
-31,679
-87% -$299K ﹤0.01% 11456
2023
Q2 		$284K Sell
36,557
-4,701
-11% -$37.3K ﹤0.01% 9173
2023
Q1 		$291K Buy
41,258
+21,566
+110% +$120K ﹤0.01% 9441
2022
Q4 		$83.1K Buy
+19,692
New +$85.3K ﹤0.01% 11470
2020
Q3 		– Sell
-21,770
Closed -$164K – 10286
2020
Q2 		$164K Buy
+21,770
New +$145K ﹤0.01% 8676
2019
Q1 		– Sell
-11,571
Closed -$119K – 9492
2018
Q4 		$119K Buy
+11,571
New +$155K ﹤0.01% 8172
2016
Q2 		– Sell
-64,282
Closed -$793K – 7006
2016
Q1 		$793K Sell
64,282
-39,395
-38% -$434K ﹤0.01% 3763
2015
Q4 		$1.46M Sell
103,677
-51,524
-33% -$733K ﹤0.01% 3116
2015
Q3 		$2.14M Buy
155,201
+10,528
+7% +$175K ﹤0.01% 2850
2015
Q2 		$3.33M Sell
144,673
-52,578
-27% -$1.1M ﹤0.01% 2471
2015
Q1 		$3.26M Sell
197,251
-3,014
-2% -$62.6K ﹤0.01% 2500
2014
Q4 		$5.31M Buy
200,265
+51,960
+35% +$1.51M 0.01% 1925
2014
Q3 		$5.21M Buy
148,305
+84,605
+133% +$3.55M 0.01% 1947
2014
Q2 		$3.51M Buy
63,700
+43,600
+217% +$2.45M ﹤0.01% 2166
2014
Q1 		$1.33M Buy
20,100
+7,405
+58% +$568K ﹤0.01% 3072
2013
Q4 		$1.2M Buy
12,695
+7,158
+129% +$658K ﹤0.01% 3039
2013
Q3 		$467K Buy
5,537
+1,945
+54% +$145K ﹤0.01% 3886
2013
Q2 		$248K Buy
+3,592
New +$300K ﹤0.01% 4471

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
SEI Investments
SEI Investments Oaks, Pennsylvania $113B AUM 34.64% 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

Citadel Advisors's GEOS Position: Q2 2026 in Review

Citadel Advisors increased its Geospace Technologies (GEOS) stake by 77% in Q2 2026, buying an estimated $218K and bringing the position to 58,018 shares worth $393K. The position accounts for ﹤0.01% of the portfolio, ranked #10476.

Citadel Advisors first reported a position in GEOS in Q2 2013 and has held it in 24 quarters since. The position peaked at $5.31M in Q4 2014. 83 funds tracked by Wall St. Rank hold GEOS as of Q2 2026.

  • Citadel Advisors held 58,018 shares of Geospace Technologies worth $393K as of Q2 2026.
  • Citadel Advisors bought 25,300 Geospace Technologies shares in Q2 2026, an estimated $218K.
  • Geospace Technologies made up ﹤0.01% of Citadel Advisors's portfolio in Q2 2026, its #10476 holding.
  • Citadel Advisors first reported a position in Geospace Technologies in Q2 2013 and has held it in 24 quarters since.
  • Citadel Advisors's Geospace Technologies position peaked at $5.31M in Q4 2014.
  • 83 funds tracked by Wall St. Rank held Geospace Technologies as of Q2 2026.

Based on Citadel Advisors's 13F filing for Q2 2026, filed 14 Aug 2026.