JO
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John Overdeck’s Geospace Technologies GEOS Stock Holding History

John Overdeck’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 		$556K Buy
82,184
+8,277
+11% +$71.3K ﹤0.01% 4081
2026
Q1 		$902K Buy
73,907
+15,619
+27% +$218K ﹤0.01% 3340
2025
Q4 		$986K Buy
58,288
+21,312
+58% +$428K ﹤0.01% 2923
2025
Q3 		$701K Buy
36,976
+21,705
+142% +$352K ﹤0.01% 2803
2025
Q2 		$218K Buy
+15,271
New +$114K ﹤0.01% 2886
2021
Q2 		– Sell
-14,832
Closed -$135K – 4228
2021
Q1 		$135K Buy
14,832
+4,088
+38% +$39.3K ﹤0.01% 3688
2020
Q4 		$92K Buy
+10,744
New +$73.5K ﹤0.01% 3217
2018
Q4 		– Sell
-32,051
Closed -$439K – 3171
2018
Q3 		$439K Sell
32,051
-19,800
-38% -$273K ﹤0.01% 2548
2018
Q2 		$729K Buy
51,851
+30,967
+148% +$359K ﹤0.01% 2378
2018
Q1 		$206K Sell
20,884
-3,330
-14% -$40.8K ﹤0.01% 2970
2017
Q4 		$314K Sell
24,214
-6,989
-22% -$108K ﹤0.01% 2712
2017
Q3 		$556K Buy
+31,203
New +$475K ﹤0.01% 2083
2017
Q1 		– Sell
-12,902
Closed -$263K – 3024
2016
Q4 		$263K Buy
12,902
+339
+3% +$6.86K ﹤0.01% 2806
2016
Q3 		$245K Sell
12,563
-4,743
-27% -$81.9K ﹤0.01% 2866
2016
Q2 		$283K Buy
+17,306
New +$282K ﹤0.01% 2592
2015
Q2 		– Sell
-41,793
Closed -$690K – 2895
2015
Q1 		$690K Sell
41,793
-53,799
-56% -$1.12M ﹤0.01% 1795
2014
Q4 		$2.53M Buy
95,592
+29,091
+44% +$844K 0.01% 927
2014
Q3 		$2.34M Buy
66,501
+8,609
+15% +$361K 0.01% 825
2014
Q2 		$3.19M Buy
57,892
+50,723
+708% +$2.85M 0.01% 860
2014
Q1 		$474K Buy
+7,169
New +$550K ﹤0.01% 1501

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

John Overdeck's GEOS Position: Q2 2026 in Review

John Overdeck increased its Geospace Technologies (GEOS) stake by 11% in Q2 2026, buying an estimated $71.3K and bringing the position to 82,184 shares worth $556K. The position accounts for ﹤0.01% of the portfolio, ranked #4081.

John Overdeck first reported a position in GEOS in Q1 2014 and has held it in 20 quarters since. The position peaked at $3.19M in Q2 2014. 83 funds tracked by Wall St. Rank hold GEOS as of Q2 2026.

  • John Overdeck held 82,184 shares of Geospace Technologies worth $556K as of Q2 2026.
  • John Overdeck bought 8,277 Geospace Technologies shares in Q2 2026, an estimated $71.3K.
  • Geospace Technologies made up ﹤0.01% of John Overdeck's portfolio in Q2 2026, its #4081 holding.
  • John Overdeck first reported a position in Geospace Technologies in Q1 2014 and has held it in 20 quarters since.
  • John Overdeck's Geospace Technologies position peaked at $3.19M in Q2 2014.
  • 83 funds tracked by Wall St. Rank held Geospace Technologies as of Q2 2026.

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