Dimensional Fund Advisors
GEOS icon

Dimensional Fund Advisors’s Geospace Technologies GEOS Stock Holding History

Dimensional Fund 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
Q1 		$5.99M Sell
491,016
-53,083
-10% -$742K ﹤0.01% 2445
2025
Q4 		$9.2M Sell
544,099
-84,305
-13% -$1.69M ﹤0.01% 2315
2025
Q3 		$11.9M Sell
628,404
-51,285
-8% -$831K ﹤0.01% 2242
2025
Q2 		$9.69M Buy
679,689
+12,493
+2% +$93.2K ﹤0.01% 2284
2025
Q1 		$4.81M Buy
667,196
+17,263
+3% +$148K ﹤0.01% 2504
2024
Q4 		$6.51M Buy
649,933
+22,584
+4% +$251K ﹤0.01% 2463
2024
Q3 		$6.49M Sell
627,349
-30,959
-5% -$296K ﹤0.01% 2440
2024
Q2 		$5.91M Sell
658,308
-15,375
-2% -$173K ﹤0.01% 2439
2024
Q1 		$8.89M Buy
673,683
+43,517
+7% +$584K ﹤0.01% 2357
2023
Q4 		$8.17M Buy
630,166
+81,891
+15% +$1M ﹤0.01% 2401
2023
Q3 		$7.1M Sell
548,275
-7,636
-1% -$72.1K ﹤0.01% 2405
2023
Q2 		$4.32M Sell
555,911
-364
-0.1% -$2.89K ﹤0.01% 2583
2023
Q1 		$3.92M Buy
556,275
+11,635
+2% +$64.5K ﹤0.01% 2556
2022
Q4 		$2.3K Sell
544,640
-4,464
-0.8% -$19.3K ﹤0.01% 2687
2022
Q3 		$2.42M Sell
549,104
-49,271
-8% -$231K ﹤0.01% 2654
2022
Q2 		$2.84M Sell
598,375
-16,026
-3% -$91.5K ﹤0.01% 2637
2022
Q1 		$3.53M Sell
614,401
-54,526
-8% -$360K ﹤0.01% 2644
2021
Q4 		$4.5M Sell
668,927
-19,328
-3% -$169K ﹤0.01% 2592
2021
Q3 		$6.57M Sell
688,255
-43,078
-6% -$397K ﹤0.01% 2496
2021
Q2 		$5.92M Sell
731,333
-18,922
-3% -$156K ﹤0.01% 2556
2021
Q1 		$6.84M Sell
750,255
-3,561
-0.5% -$34.3K ﹤0.01% 2464
2020
Q4 		$6.45M Sell
753,816
-17,613
-2% -$121K ﹤0.01% 2436
2020
Q3 		$4.77M Sell
771,429
-16,080
-2% -$110K ﹤0.01% 2456
2020
Q2 		$5.92M Sell
787,509
-25,078
-3% -$167K ﹤0.01% 2420
2020
Q1 		$5.2M Buy
812,587
+16,961
+2% +$202K ﹤0.01% 2389
2019
Q4 		$13.3M Buy
795,626
+10,576
+1% +$161K ﹤0.01% 2233
2019
Q3 		$12.1M Sell
785,050
-889
-0.1% -$12.8K ﹤0.01% 2266
2019
Q2 		$11.9M Buy
785,939
+17,228
+2% +$237K ﹤0.01% 2326
2019
Q1 		$9.95M Buy
768,711
+40,654
+6% +$594K ﹤0.01% 2403
2018
Q4 		$7.51M Buy
728,057
+7,084
+1% +$94.8K ﹤0.01% 2464
2018
Q3 		$9.88M Buy
720,973
+61,908
+9% +$855K ﹤0.01% 2444
2018
Q2 		$9.27M Buy
659,065
+87,880
+15% +$1.02M ﹤0.01% 2456
2018
Q1 		$5.64M Buy
571,185
+73,711
+15% +$904K ﹤0.01% 2593
2017
Q4 		$6.45M Buy
497,474
+28,569
+6% +$441K ﹤0.01% 2525
2017
Q3 		$8.36M Buy
468,905
+68,629
+17% +$1.04M ﹤0.01% 2441
2017
Q2 		$5.54M Buy
400,276
+42,335
+12% +$651K ﹤0.01% 2545
2017
Q1 		$5.81M Buy
357,941
+23,618
+7% +$448K ﹤0.01% 2511
2016
Q4 		$6.81M Buy
334,323
+9,337
+3% +$189K ﹤0.01% 2456
2016
Q3 		$6.33M Buy
324,986
+11,130
+4% +$192K ﹤0.01% 2437
2016
Q2 		$5.14M Hold
313,856
– – ﹤0.01% 2484
2016
Q1 		$3.87M Sell
313,856
-400
-0.1% -$4.41K ﹤0.01% 2577
2015
Q4 		$4.42M Sell
314,256
-4,280
-1% -$60.9K ﹤0.01% 2568
2015
Q3 		$4.4M Buy
318,536
+14,558
+5% +$242K ﹤0.01% 2567
2015
Q2 		$7.01M Buy
303,978
+25,274
+9% +$528K ﹤0.01% 2430
2015
Q1 		$4.6M Hold
278,704
– – ﹤0.01% 2581
2014
Q4 		$7.39M Sell
278,704
-2,486
-0.9% -$72.1K ﹤0.01% 2398
2014
Q3 		$9.88M Sell
281,190
-307
-0.1% -$12.9K 0.01% 2208
2014
Q2 		$15.5M Buy
281,497
+14,244
+5% +$801K 0.01% 1889
2014
Q1 		$17.7M Buy
267,253
+52,712
+25% +$4.04M 0.01% 1706
2013
Q4 		$20.3M Buy
214,541
+19,648
+10% +$1.81M 0.02% 1529
2013
Q3 		$16.4M Sell
194,893
-34,947
-15% -$2.6M 0.01% 1653
2013
Q2 		$15.9M Buy
+229,840
New +$19.2M 0.02% 1554

Other funds holding GEOS

DGI
Disciplined Growth Investors Minneapolis, Minnesota $4.89B AUM 33.85% 1-Year Est. Return
TCM
Tieton Capital Management Yakima, Washington $299M AUM 54.55% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
GWI
Grace & White Inc Ny, New York $632M AUM 34.34% 1-Year Est. Return
SEI Investments
SEI Investments Oaks, Pennsylvania $108B AUM 26.14% 1-Year Est. Return
First Eagle Investment Management
First Eagle Investment Management New York $59B AUM 32.99% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
MC
Moors & Cabot Boston, Massachusetts $2.34B AUM 30.42% 1-Year Est. Return
Marshall Wace
Marshall Wace London, United Kingdom $100B AUM 35.1% 1-Year Est. Return
GC
Glenorchy Capital Boorolite, Australia $1.72B AUM 91.26% 1-Year Est. Return

Dimensional Fund Advisors's GEOS Position: Q1 2026 in Review

Dimensional Fund Advisors reduced its Geospace Technologies (GEOS) stake by 9.8% in Q1 2026, selling an estimated $742K and leaving 491,016 shares worth $5.99M. The position accounts for ﹤0.01% of the portfolio, ranked #2445.

Dimensional Fund Advisors first reported a position in GEOS in Q2 2013 and has held it in 52 quarters since. The position peaked at $20.3M in Q4 2013. 86 funds tracked by Wall St. Rank hold GEOS as of Q1 2026.

  • Dimensional Fund Advisors held 491,016 shares of Geospace Technologies worth $5.99M as of Q1 2026.
  • Dimensional Fund Advisors sold 53,083 Geospace Technologies shares in Q1 2026, an estimated $742K.
  • Geospace Technologies made up ﹤0.01% of Dimensional Fund Advisors's portfolio in Q1 2026, its #2445 holding.
  • Dimensional Fund Advisors first reported a position in Geospace Technologies in Q2 2013 and has held it in 52 quarters since.
  • Dimensional Fund Advisors's Geospace Technologies position peaked at $20.3M in Q4 2013.
  • 86 funds tracked by Wall St. Rank held Geospace Technologies as of Q1 2026.

Based on Dimensional Fund Advisors's 13F filing for Q1 2026, filed 7 May 2026.