Geospace Technologies GEOS Institutional Ownership

NASDAQ GEOS

$5.10 +0.01 (+0.20%)

At close: Sep 11, 2026 · 4:00 PM EDT

Institutions by Trading Activity

84 Institutions

Increased 43 51.2%

Unchanged 19 22.6%

Reduced 22 26.2%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

39.84%

▼-14.07 pp QoQ

Shares Held by Institutions

5.15Mn

of 12.93Mn outstanding

▲+1.00% QoQ

Shares Outstanding

12.93Mn

7.78Mn held outside 13F filers

Institutional Investors

filed 13F for Jun 2026

▼-2 vs prior quarter

Net Shares Added (QoQ)

+50.97K

accumulated since last quarter

Value of Holdings

$27.73Mn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Geospace Technologies Corp (NASDAQ:GEOS) has 84 institutional investors with active 13F positions as of June 2026.

Collectively, these holders controlled 39.8% of Geospace Technologies's outstanding shares in June 2026, down from 53.9% in March 2026.
They increased total shares held in Geospace Technologies by 1.0% from last quarter, and the number of investors in GEOS increased 33.33% annually.
Activity in GEOS broke down as 43 buyers, 22 sellers, and 19 unchanged among 84 total holders.
In total, institutional investors held 5.15Mn shares in Geospace Technologies as of June 2026, up by 50.96K shares quarter on quarter, and down 1.4Mn shares year over year.
As of June 30, 2026, the biggest holder of Geospace Technologies is Tieton Capital Management, LLC at 907.26K shares, representing 7.01% of shares outstanding.
The largest buyers of Geospace Technologies for the quarter ending June 2026 were GRACE & WHITE INC /NY (200.04K), ROBOTTI ROBERT (128.44K), MARSHALL WACE, LLP (113.11K), Us Bancorp \De\ (85.63K), RENAISSANCE TECHNOLOGIES LLC (44.3K).
The largest sales of GEOS for the quarter ending June 2026 came from Sei Investments Co (211.54K), Moors & Cabot, Inc. (171.1K), SUSQUEHANNA INTERNATIONAL GROUP, LLP (113.37K), Glenorchy Capital Ltd (104.85K), DIMENSIONAL FUND ADVISORS LP (98.59K).
Per Business Quant data, the top 10 holders of Geospace Technologies for the quarter ending June 2026 are Tieton Capital Management, LLC (907.26K), GRACE & WHITE INC /NY (673.24K), VANGUARD CAPITAL MANAGEMENT LLC (515.07K), DIMENSIONAL FUND ADVISORS LP (392.42K), MARSHALL WACE, LLP (301.92K), BlackRock, Inc. (231.76K), Us Bancorp \De\ (212.77K), Sei Investments Co (199.36K), GEODE CAPITAL MANAGEMENT, LLC (164.18K), State Street Corp (163.08K).

Form 13F Holdings

84 Institutional Holders

Report period 30 Jun, 2026

Total shares held 5.15Mn

Of outstanding 39.84%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	Tieton Capital Management, LLC	0001381954	907,265	7.01%	▼4,853	-0.53%	$6.14K
2	GRACE & WHITE INC /NY	0000903064	673,236	5.20%	▲200,035	+42.27%	$4.56Mn
3	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	515,067	3.98%	▼61,965	-10.74%	$3.49Mn
4	DIMENSIONAL FUND ADVISORS LP	0000354204	392,423	3.03%	▼98,593	-20.08%	$2.66Mn
5	MARSHALL WACE, LLP	0001318757	301,916	2.33%	▲113,110	+59.91%	$2.04Mn
6	BlackRock, Inc.	0002012383	231,765	1.79%	▲6,197	+2.75%	$1.57Mn
7	Us Bancorp \De\	0000036104	212,766	1.64%	▲85,632	+67.36%	$1.44Mn
8	Sei Investments Co	0000350894	199,365	1.54%	▼211,541	-51.48%	$1.35Mn
9	GEODE CAPITAL MANAGEMENT, LLC	0001214717	164,180	1.27%	▲12,026	+7.90%	$1.11Mn
10	State Street Corp	0000093751	163,075	1.26%	▲26,222	+19.16%	$1.10Mn
11	De Lisle Partners LLP	0002011184	147,133	1.14%	0	0.00%	$998.30K
12	ROBOTTI ROBERT	0001105838	128,436	0.99%	▲128,436	0.00%	$869.51K
13	TWO SIGMA INVESTMENTS, LP	0001179392	82,184	0.64%	▲8,277	+11.20%	$556.39K
14	BRIDGEWAY CAPITAL MANAGEMENT, LLC	0001107261	79,693	0.62%	▲900	+1.14%	$539.52K
15	VANGUARD FIDUCIARY TRUST CO	0000933478	76,586	0.59%	▲521	+0.68%	$518.49K
16	Glenorchy Capital Ltd	0002008506	68,488	0.53%	▼104,851	-60.49%	$463.67K
17	CITADEL ADVISORS LLC	0001423053	58,018	0.45%	▲25,300	+77.33%	$392.78K
18	EagleClaw Capital Managment, LLC	0001607636	50,015	0.39%	▼32,000	-39.02%	$338.60K
19	RENAISSANCE TECHNOLOGIES LLC	0001037389	44,299	0.34%	▲44,299	0.00%	$299.90K
20	ACADIAN ASSET MANAGEMENT LLC	0000916542	42,713	0.33%	▲42,713	0.00%	$286

Showing 1 to 20 of 84 holders