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Disclosery

GEOS GEOSPACE TECHNOLOGIES CORP

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COM (common), issuer CIK 1001115

83 managers (86 13F filers) reported a position in GEOS shares at 2026-03-31, 6,722,982 shares in all. 17 filers opened a position and 16 filers sold out during the quarter.

Managers
83
13F filers
86
New
17
Added
23
Reduced
26
Sold out
16
Shares held by filers
6,722,982

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

Each filer's latest stake. The shares are the aggregate the reporting persons state, which can include entities that file no 13F.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
DISCIPLINED GROWTH INVESTORS INC /MN1,101,426$13.4M0.27%-30,14213F-HRTimeline
Tieton Capital Management, LLC912,118$11.1M3.73%+27,94213F-HRTimeline
VANGUARD GROUP INCgroup of 3 filers holding658,123$8.03MnewTimeline
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP491,016$5.99M<0.01%-53,08313F-HRTimelineGroup
GRACE & WHITE INC /NY473,201$5.77M1.02%+165,40613F-HRTimeline
SEI INVESTMENTS COin group SEI INVESTMENTS CO410,906$5.01M<0.01%+213,95013F-HRTimelineGroup
First Eagle Investment Management, LLCin group First Eagle Investment Manage…240,000$2.93M<0.01%-190,27313F-HR/ATimelineGroup
BlackRock, Inc.in group BlackRock, Inc.225,568$2.75M<0.01%+4,46213F-HRTimelineGroup
Moors & Cabot, Inc.190,600$2.33M0.1%-385,35013F-HRTimeline
MARSHALL WACE, LLPin group MARSHALL WACE, LLP188,806$2.3M<0.01%+177,02113F-HRTimelineGroup
Glenorchy Capital Ltd173,339$2.11M1.14%+2,34713F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC152,154$1.86M<0.01%+6,04713F-HRTimelineGroup
De Lisle Partners LLP147,133$1.79M0.21%013F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…146,395$1.79M<0.01%-84,89013F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP136,853$1.67M<0.01%+10,91713F-HRTimelineGroup
US BANCORP \DE\in group US BANCORP \DE\127,134$1.55M<0.01%013F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC107,386$1.31M<0.01%+45,36613F-HRTimelineGroup
EagleClaw Capital Managment, LLC82,015$1M0.14%+20,86513F-HRTimeline
BRIDGEWAY CAPITAL MANAGEMENT, LLC78,793$961K0.02%-35,91413F-HRTimeline
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP73,907$902K<0.01%+15,61913F-HRTimelineGroup
Cambridge Investment Research Advisors,…44,297$540K<0.01%-13,87713F-HRTimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP40,596$495K<0.01%+1,65813F-HRTimelineGroup
683 Capital Management, LLCin group 683 Capital Management, LLC39,252$479K0.04%013F-HRTimelineGroup
IRONWOOD INVESTMENT MANAGEMENT LLC36,042$440K0.18%-73413F-HRTimeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC32,718$399K<0.01%-26,00813F-HRTimelineGroup
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC29,319$358K<0.01%-82213F-HRTimelineGroup
Kingsview Wealth Management, LLC28,322$346K<0.01%new13F-HRTimeline
ELEVATION POINT WEALTH PARTNERS, LLC24,355$297K0.01%+8413F-HRTimeline
Vestmark Advisory Solutions, Inc.24,313$297K<0.01%+4213F-HRTimeline
Mraz, Amerine & Associates, Inc.24,081$294K0.04%013F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS23,442$286K<0.01%+22,64613F-HRTimelineGroup
Hudson Bay Capital Management LPin group Hudson Bay Capital Management…22,293$272K<0.01%+3,57913F-HRTimelineGroup
Qube Research & Technologies Ltd21,909$267K<0.01%-10,34213F-HRTimeline
COMMONWEALTH EQUITY SERVICES, LLC21,885$267K<0.01%013F-HRTimeline
Empowered Funds, LLC20,291$248K<0.01%-20,00013F-HR/ATimeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/18,060$220K<0.01%+3,39513F-HRTimelineGroup
Tannin Capital LLC17,209$210K0.15%+3,66413F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY16,518$202K<0.01%-74613F-HRTimelineGroup
Schonfeld Strategic Advisors LLC16,282$199K<0.01%new13F-HRTimeline
ESSEX INVESTMENT MANAGEMENT CO LLC13,636$166K0.03%013F-HRTimeline
IMC-Chicago, LLC13,498$165K<0.01%+1,02013F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC11,866$145K<0.01%-11,47813F-HRTimelineGroup
OMERS ADMINISTRATION Corp11,100$135K<0.01%-9,00013F-HRTimeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co10,335$126K<0.01%-9413F-HRTimelineGroup
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN10,178$124K<0.01%-73013F-HR/ATimelineGroup
HUB Investment Partners, LLC10,000$122K<0.01%new13F-HRTimeline
GROUP ONE TRADING LLC2,575$31.4K<0.01%new13F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…2,000$24.4K<0.01%new13F-HRTimelineGroup
SBI Securities Co., Ltd.1,806$22K<0.01%+51613F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.1,643$20K<0.01%-72213F-HRTimelineGroup
TrinityBridge Ltd1,600$19K<0.01%new13F-HRTimeline
UBS Group AGgroup of 2 filers holding1,426$17.4K-5,391Timeline
Steward Partners Investment Advisory, L…1,200$14.6K<0.01%new13F-HRTimeline
CITIGROUP INCin group CITIGROUP INC1,126$13.7K<0.01%-2,18313F-HRTimelineGroup
FMR LLCin group FMR LLC1,109$13.5K<0.01%-213F-HRTimelineGroup
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP1,060$12.9K<0.01%+48013F-HRTimelineGroup
CoreCap Advisors, LLC950$11.6K<0.01%013F-HRTimeline
Larson Financial Group LLC858$10.5K<0.01%new13F-HRTimeline
Parvin Asset Management, LLC750$9.15K0.01%013F-HRTimeline
Truvestments Capital LLC745$9.09K<0.01%new13F-HRTimeline
Covestor Ltd728$9K0.01%new13F-HRTimeline
HARBOUR INVESTMENTS, INC.505$6.16K<0.01%+50013F-HRTimeline
RHUMBLINE ADVISERS439$5.36K<0.01%013F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA466$5K<0.01%-24513F-HRTimelineGroup
SIMPLEX TRADING, LLC396$4.83K<0.01%-1,60513F-HRTimeline
INTERNATIONAL ASSETS INVESTMENT MANAGEM…400$4.76K<0.01%-30013F-HRTimeline
Aventura Private Wealth, LLC385$4.7K<0.01%+6113F-HRTimeline
Sunbelt Securities, Inc.300$3.66K<0.01%013F-HRTimeline
IFP Advisors, Inc232$2.83K<0.01%new13F-HRTimeline
Hurley Capital, LLC206$2.51K<0.01%013F-HRTimeline
Advisory Services Network, LLC200$2.44K<0.01%new13F-HRTimeline
Lloyd Advisory Services, LLC.194$2.37K<0.01%new13F-HRTimeline
Kingdom Financial Group LLC.194$2.37K<0.01%013F-HRTimeline
CWM, LLCin group CWM, LLC190$2.32K<0.01%-1413F-HRTimelineGroup
Farther Finance Advisors, LLC192$2.29K<0.01%-98813F-HRTimeline
TOTH FINANCIAL ADVISORY CORP100$1.22K<0.01%new13F-HRTimeline
Triumph Capital Management100$1.22K<0.01%013F-HRTimeline
Capital Advisors, Ltd. LLC122$1K<0.01%013F-HRTimeline
SIGNATUREFD, LLC54$659<0.01%013F-HRTimeline
Root Financial Partners, LLC34$415<0.01%013F-HRTimeline
Allworth Financial LP15$183<0.01%new13F-HRTimeline
Optiver Holding B.V.in group Optiver Holding B.V.6$73<0.01%013F-HR/ATimelineGroup
Caitong International Asset Management …6$73<0.01%new13F-HRTimeline

Events

  • GRACE & WHITE INC /NY reported 793,498 GEOS shares, 6.13% of the class, as of 2026-09-30, in a 13G filed 2026-10-07. 0000903064-26-000009

    Accepted , ingested