GEOSPACE TECHNOLOGIES CORP

GEOSNASDAQ

$4.80+0.03 (+0.63%)as of Oct 2, 2026

Legend

Insider buy

Insider sell

Congress buy

Congress sell

Hedge Funds
bought vs soldGreener markers show more buyers; redder markers show more sellers.

Company share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size.

Insider buy
Insider sell
Congress buy
Congress sell
Hedge Funds bought vs sold

Share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size. Greener fund markers mean more buyers.

Insider Buy
Insider Sell
Congress Buy
Congress Sell
Hedge funds bought vs sold
BuybackNo changeNet dilution

GEOSPACE TECHNOLOGIES CORP price and activity chart data

Showing the 1Y range: Oct 2, 2025 to Oct 2, 2026. Price (-75.9%). 0 insider or congressional trades plotted in this window as 0 markers; nearby trades of the same kind are grouped.

Transactions plotted on the price chart
Date	Category	Person	Role	Action	Amount	Change in holding

Largest institutional holders

13F · Q2 2026

Fund	% of company held	Value	% of portfolio	Quarterly activity
Grace & White Inc	5.20%	$4.56M	0.72%	Not reported
Vanguard Capital Management LLC	3.98%	$3.49M	0.00%	Not reported
Dimensional Fund Advisors LP	3.03%	$2.66M	0.00%	Not reported
Marshall Wace, LLP	2.33%	$2.04M	0.00%	Not reported
BlackRock, Inc.	1.79%	$1.57M	0.00%	Not reported
US Bancorp \de\	1.64%	$1.44M	0.00%	Not reported
Sei Investments Co	1.54%	$1.35M	0.00%	Not reported
Geode Capital Management, LLC	1.27%	$1.11M	0.00%	Not reported
State Street Corp	1.26%	$1.1M	0.00%	Not reported
De Lisle Partners LLP	1.14%	$998K	0.11%	Not reported
Robotti Robert	0.99%	$870K	0.14%	New Not reported
Two Sigma Investments, LP	0.64%	$556K	0.00%	Not reported
Bridgeway Capital Management, LLC	0.62%	$540K	0.01%	Not reported
Vanguard Fiduciary Trust Co	0.59%	$518K	0.00%	Not reported
Glenorchy Capital Ltd	0.53%	$464K	0.02%	Reduce 60.49%
Cambridge Investment Research Advisors, Inc.	0.46%	$404K	0.00%	Not reported
Citadel Advisors LLC	0.45%	$393K	0.00%	Not reported
EagleClaw Capital Managment, LLC	0.39%	$339K	0.05%	Reduce 39.02%
Renaissance Technologies LLC	0.34%	$300K	0.00%	Not reported
Acadian Asset Management LLC	0.33%	$286K	0.00%	Not reported
Ironwood Investment Management LLC	0.28%	$246K	0.08%	Add 0.66%
Jacobs Levy Equity Management, Inc	0.28%	$241K	0.00%	Not reported
Susquehanna International Group, LLP	0.26%	$224K	0.00%	Not reported
Kingsview Wealth Management, LLC	0.24%	$212K	0.00%	Add 10.45%
Northern Trust Corp	0.22%	$194K	0.00%	Not reported
American Century Companies Inc	0.22%	$191K	0.00%	Not reported
Goldman Sachs Group Inc	0.20%	$175K	0.00%	Not reported
Mraz, Amerine & Associates, Inc.	0.19%	$165K	0.02%	Add 1.26%
Vestmark Advisory Solutions, Inc.	0.19%	$165K	0.00%	Not reported
Elevation Point Wealth Partners, LLC	0.19%	$165K	0.00%	Reduce 0.17%
IMC-Chicago, LLC	0.18%	$157K	0.00%	Add 71.37%
Commonwealth Equity Services, LLC	0.17%	$152K	0.00%	Not reported
Jane Street Group, LLC	0.16%	$144K	0.00%	Not reported
Empowered Funds, LLC	0.16%	$137K	0.00%	Not reported
Tannin Capital LLC	0.15%	$133K	0.09%	Add 14.23%
Axq Capital, LP	0.15%	$133K	0.01%	New Not reported
Moors & Cabot, Inc.	0.15%	$132K	0.01%	Reduce 89.77%
Gsa Capital Partners LLP	0.12%	$105K	0.01%	Not reported
Morgan Stanley	0.12%	$103K	0.00%	Not reported
XTX Topco Ltd	0.10%	$91K	0.00%	Not reported
Invesco Ltd.	0.10%	$85.8K	0.00%	Not reported
Wells Fargo & Company	0.10%	$84.3K	0.00%	Not reported
HUB Investment Partners, LLC	0.08%	$67.7K	0.00%	Not reported
UBS Group AG	0.06%	$49.7K	0.00%	Not reported
Vanguard Global Advisers, LLC	0.04%	$34K	0.00%	Not reported
Simplex Trading, LLC	0.02%	$14K	0.00%	Not reported
JPMorgan Chase & Co	0.01%	$10.6K	0.00%	Not reported
SBI Securities Co., Ltd.	0.01%	$10.9K	0.00%	Not reported
Osaic Holdings, Inc.	0.01%	$9.32K	0.00%	Not reported
FMR LLC	0.01%	$8.08K	0.00%	Not reported

50 of 78 holders

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