GEOSPACE TECHNOLOGIES CORP

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GEOS·37364X109·US·Common Stock·Energy - Oil & Gas Equipment & Services-13D/G

GEOS (GEOSPACE TECHNOLOGIES CORP) is held by 45 institutional investors as of Q1 2026. Largest holders: VANGUARD CAPITAL MANAGEMENT LLC ($7M), DIMENSIONAL FUND ADVISORS LP ($6M), SEI INVESTMENTS CO ($5M). Net institutional sentiment: Mixed.

45

Holders

(3 Elite)

$40.2M

Total Value

46% (48)

Consensus

22 buying - 26 selling

13F: Mar 31, 2026Insider & Congress: Updated regularly

Smart Money Verdict

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Institutional (13F)37

Insider (Form 4)68

Activist (13D/13G)31

Congressional (STOCK Act)43

Holder Quality

87

★★★★★

Elite

23

★★★★

Strong

15

★★★

Solid

53

★★

Below

40

★

Weak

Held by 45 funds

3 elite

Who's Trading

Source dates: Price Aug 13, 2026 · Insiders none · Activists Jul 31, 2026 · Congress none

ActivistVAVanguard Capital Management4.6%Jul 31, 2026

ActivistDGDISCIPLINED GROWTH INVESTORS INC /MN8.5%May 15, 2026

ActivistVAVanguard Capital Management5.1%Apr 29, 2026

ActivistThe Vanguard Group0.0%Mar 26, 2026

ActivistDimensional Fund Advisors LP4.9%Oct 9, 2025

ActivistBlackRock, Inc.2.7%Jul 17, 2025

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Top Holders

Top Holders (45)History

AllNewIncreasedHeldDecreasedExited

Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
VAVANGUARD CAPITAL MANAGEMENT LLC	New	577,032	$7M	0.0%	-47.71%	38
DIMENSIONAL FUND ADVISORS LP	Decreased	491,016(-9.8%)	$6M	0.0%	-39.89%	0
SEI INVESTMENTS CO	Increased	410,906(+108.6%)	$5M	0.0%	-61.82%	43
First Eagle Investment Management, LLC	Decreased	240,000(-44.2%)	$2.9M	0.0%	-47.60%	0
BlackRock, Inc.	Increased	225,568(+2.0%)	$2.8M	0.0%	-51.39%	18
MWMARSHALL WACE, LLP	Increased	188,806(+1502.1%)	$2.3M	0.0%	-50.11%	42
GEODE CAPITAL MANAGEMENT, LLC	Increased	152,154(+4.1%)	$1.9M	0.0%	-51.87%	27
SUSQUEHANNA INTERNATIONAL GROUP, LLP	Decreased	146,395(-36.7%)	$1.8M	0.0%	-69.34%	0
STATE STREET CORP	Increased	136,853(+8.7%)	$1.7M	0.0%	-63.83%	28
US BANCORP \DE\	Unchanged	127,134	$1.6M	0.0%	-42.08%	0
MILLENNIUM MANAGEMENT LLC	Increased	107,386(+73.2%)	$1.3M	0.0%	-61.44%	38
VFVANGUARD FIDUCIARY TRUST CO	New	76,065	$927,993	0.0%	-47.71%	35
TWO SIGMA INVESTMENTS, LP	Increased	73,907(+26.8%)	$901,665	0.0%	-67.89%	31
NORTHERN TRUST CORP	Increased	40,596(+4.3%)	$495,271	0.0%	-55.33%	25
CITADEL ADVISORS LLC	Decreased	32,718(-44.3%)	$399,160	0.0%	-72.84%	0
AMERICAN CENTURY COMPANIES INC	Decreased	29,319(-2.7%)	$357,692	0.0%	-59.76%	0
BNP PARIBAS FINANCIAL MARKETS	Increased	23,442(+2845.0%)	$285,992	0.0%	-49.13%	38
Hudson Bay Capital Management LP	Increased	22,293(+19.1%)	$271,975	0.0%	-68.26%	27
Qube Research & Technologies Ltd	Decreased	21,909(-32.1%)	$267,290	0.0%	-70.48%	0
COMMONWEALTH EQUITY SERVICES, LLC	Unchanged	21,885	$267,000	0.0%	-70.48%	0

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GEOSGEOSPACE TECHNOLOGIES CORP

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Data sourced from four public-disclosure sources: SEC 13F, Form 4, 13D/13G, and House/Senate STOCK Act disclosures. Not financial advice. Full disclaimer