GEOSPACE TECHNOLOGIES CORP - GEOS
Detailed investor-level table based on 13F positions.
Methodology:
Market value and % of portfolio use SEC reported VALUE ($000).
For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received.
Details.
Rows: 0
| Investor | History | Status | Shares held | Market value ($000) | % of portfolio | Previous % | Rank | Change in shares | % change in shares | Source | Date reported |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DISCIPLINED GROWTH INVESTORS INC /MN | History | Reduced | 1,131,568 | 19,134 | 0.37% | 0.4% | 1 | -22,021 | -1.91% | Q4 2025 | Feb 17, 2026 |
| Tieton Capital Management, LLC | History | Reduced | 884,176 | 14,951 | 5.11% | 5.85% | 2 | -4,160 | -0.47% | Q4 2025 | Feb 10, 2026 |
| VANGUARD GROUP INC | History | Added to | 648,222 | 10,961 | 0.0% | 0.0% | 3 | +13,759 | 2.17% | Q4 2025 | Jan 29, 2026 |
| Moors & Cabot, Inc. | History | Reduced | 575,950 | 9,739 | 0.42% | 0.59% | 4 | -138,800 | -19.42% | Q4 2025 | Feb 10, 2026 |
| DIMENSIONAL FUND ADVISORS LP | History | Reduced | 544,099 | 9,201 | 0.0% | 0.0% | 5 | -84,305 | -13.42% | Q4 2025 | Feb 12, 2026 |
| First Eagle Investment Management, LLC | History | Reduced | 430,273 | 7,275 | 0.01% | 0.02% | 6 | -92,591 | -17.71% | Q4 2025 | Feb 04, 2026 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | History | Reduced | 313,185 | 5,295 | 0.0% | 0.0% | 7 | -121,059 | -27.88% | Q4 2025 | Feb 17, 2026 |
| GRACE & WHITE INC /NY | History | Reduced | 307,795 | 5,204 | 0.93% | 1.05% | 8 | -6,751 | -2.15% | Q4 2025 | Jan 26, 2026 |
| BlackRock, Inc. | History | Added to | 221,106 | 3,738 | 0.0% | 0.0% | 9 | +13,941 | 6.73% | Q4 2025 | Feb 12, 2026 |
| SEI INVESTMENTS CO | History | New | 196,956 | 3,330 | 0.0% | — | 10 | +196,956 | New | Q4 2025 | Feb 13, 2026 |
| Glenorchy Capital Ltd | History | Reduced | 170,992 | 2,891 | 0.18% | 0.51% | 11 | -11,268 | -6.18% | Q4 2025 | Jan 30, 2026 |
| De Lisle Partners LLP | History | Added to | 147,133 | 2,482 | 0.32% | 0.33% | 12 | +2,899 | 2.01% | Q4 2025 | Feb 13, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | History | Added to | 146,107 | 2,472 | 0.0% | 0.0% | 13 | +3,507 | 2.46% | Q4 2025 | Feb 09, 2026 |
| US BANCORP \DE\ | History | Added to | 127,134 | 2,149 | 0.0% | 0.0% | 14 | +3,100 | 2.5% | Q4 2025 | Jan 30, 2026 |
| CITADEL ADVISORS LLC | History | Reduced | 126,026 | 2,131 | 0.0% | 0.0% | 15 | -75,196 | -37.37% | Q4 2025 | Feb 17, 2026 |
| STATE STREET CORP | History | Added to | 125,936 | 2,129 | 0.0% | 0.0% | 16 | +68,247 | 118.3% | Q4 2025 | Feb 13, 2026 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | History | Reduced | 114,707 | 1,939 | 0.04% | 0.06% | 17 | -23,912 | -17.25% | Q4 2025 | Feb 17, 2026 |
| MILLENNIUM MANAGEMENT LLC | History | Reduced | 62,020 | 1,048 | 0.0% | 0.0% | 18 | -58,834 | -48.68% | Q4 2025 | Feb 17, 2026 |
| EagleClaw Capital Managment, LLC | History | No change | 61,150 | 1,034 | 0.15% | 0.16% | 19 | 0 | 0.0% | Q4 2025 | Feb 10, 2026 |
| GOLDMAN SACHS GROUP INC | History | Added to | 60,136 | 1,016 | 0.0% | 0.0% | 20 | +41,865 | 229.13% | Q4 2025 | Mar 25, 2026 |
| TWO SIGMA INVESTMENTS, LP | History | Added to | 58,288 | 985 | 0.0% | 0.0% | 21 | +21,312 | 57.64% | Q4 2025 | Feb 17, 2026 |
| Cambridge Investment Research Advisors, Inc. | History | New | 58,174 | 984 | 0.0% | — | 22 | +58,174 | New | Q4 2025 | Feb 05, 2026 |
| Brooklyn Investment Group | History | New | 43,799 | 761 | 0.04% | — | 23 | +43,799 | New | Q4 2025 | Feb 12, 2026 |
| Empowered Funds, LLC | History | Reduced | 40,291 | 681 | 0.01% | 0.01% | 24 | -23,912 | -37.24% | Q4 2025 | Feb 18, 2026 |
| 683 Capital Management, LLC | History | New | 39,252 | 663 | 0.03% | — | 25 | +39,252 | New | Q4 2025 | Feb 17, 2026 |
| NORTHERN TRUST CORP | History | Reduced | 38,938 | 658 | 0.0% | 0.0% | 26 | -786 | -1.98% | Q4 2025 | Feb 17, 2026 |
| Peapod Lane Capital LLC | History | Reduced | 37,817 | 639 | 0.54% | 1.44% | 27 | -47,187 | -55.51% | Q4 2025 | Jan 28, 2026 |
| IRONWOOD INVESTMENT MANAGEMENT LLC | History | Reduced | 36,776 | 621 | 0.26% | 0.3% | 28 | -80 | -0.22% | Q4 2025 | Feb 12, 2026 |
| Qube Research & Technologies Ltd | History | New | 32,251 | 545 | 0.0% | — | 29 | +32,251 | New | Q4 2025 | Feb 17, 2026 |
| AMERICAN CENTURY COMPANIES INC | History | Reduced | 30,141 | 509 | 0.0% | 0.0% | 30 | -55,390 | -64.76% | Q4 2025 | Feb 13, 2026 |
| AlphaQuest LLC | History | Added to | 27,604 | 466 | 0.03% | 0.03% | 31 | +2,878 | 11.64% | Q4 2025 | Feb 09, 2026 |
| ExodusPoint Capital Management, LP | History | New | 25,049 | 423 | 0.0% | — | 32 | +25,049 | New | Q4 2025 | Feb 17, 2026 |
| JANE STREET GROUP, LLC | History | Reduced | 24,918 | 421 | 0.0% | 0.0% | 33 | -84,938 | -77.32% | Q4 2025 | Feb 12, 2026 |
| GSA CAPITAL PARTNERS LLP | History | Added to | 24,520 | 415 | 0.04% | 0.03% | 34 | +2,793 | 12.85% | Q4 2025 | Feb 06, 2026 |
| Vestmark Advisory Solutions, Inc. | History | New | 24,271 | 410 | 0.01% | — | 35 | +24,271 | New | Q4 2025 | Feb 06, 2026 |
| ELEVATION POINT WEALTH PARTNERS, LLC | History | New | 24,271 | 410 | 0.02% | — | 36 | +24,271 | New | Q4 2025 | Feb 12, 2026 |
| Mraz, Amerine & Associates, Inc. | History | No change | 24,081 | 407 | 0.06% | 0.07% | 37 | 0 | 0.0% | Q4 2025 | Feb 06, 2026 |
| BARCLAYS PLC | History | Added to | 23,344 | 394 | 0.0% | 0.0% | 38 | +17,583 | 305.21% | Q4 2025 | Feb 13, 2026 |
| XTX Topco Ltd | History | New | 22,936 | 387 | 0.01% | — | 39 | +22,936 | New | Q4 2025 | Feb 17, 2026 |
| ACADIAN ASSET MANAGEMENT LLC | History | Added to | 22,058 | 372 | 0.0% | 0.0% | 40 | +7,916 | 55.98% | Q4 2025 | Feb 10, 2026 |
| COMMONWEALTH EQUITY SERVICES, LLC | History | New | 21,885 | 370 | 0.0% | — | 41 | +21,885 | New | Q4 2025 | Feb 12, 2026 |
| OMERS ADMINISTRATION Corp | History | New | 20,100 | 339 | 0.0% | — | 42 | +20,100 | New | Q4 2025 | Feb 13, 2026 |
| Hudson Bay Capital Management LP | History | New | 18,714 | 316 | 0.0% | — | 43 | +18,714 | New | Q4 2025 | Feb 13, 2026 |
| MORGAN STANLEY | History | Added to | 17,264 | 291 | 0.0% | 0.0% | 44 | +9,725 | 129.0% | Q4 2025 | Feb 13, 2026 |
| FourThought Financial Partners, LLC | History | New | 16,339 | 276 | 0.02% | — | 45 | +16,339 | New | Q4 2025 | Feb 06, 2026 |
| BANK OF AMERICA CORP /DE/ | History | Reduced | 14,665 | 247 | 0.0% | 0.0% | 46 | -9,612 | -39.59% | Q4 2025 | Feb 17, 2026 |
| ESSEX INVESTMENT MANAGEMENT CO LLC | History | No change | 13,636 | 230 | 0.04% | 0.04% | 47 | 0 | 0.0% | Q4 2025 | Feb 13, 2026 |
| Tannin Capital LLC | History | New | 13,545 | 229 | 0.2% | — | 48 | +13,545 | New | Q4 2025 | Feb 17, 2026 |
| LPL Financial LLC | History | New | 13,200 | 223 | 0.0% | — | 49 | +13,200 | New | Q4 2025 | Feb 11, 2026 |
| IMC-Chicago, LLC | History | New | 12,478 | 211 | 0.0% | — | 50 | +12,478 | New | Q4 2025 | Jan 29, 2026 |
| MARSHALL WACE, LLP | History | New | 11,785 | 199 | 0.0% | — | 51 | +11,785 | New | Q4 2025 | Feb 13, 2026 |
| WELLS FARGO & COMPANY/MN | History | Reduced | 10,908 | 184 | 0.0% | 0.0% | 52 | -4,318 | -28.36% | Q4 2025 | Feb 13, 2026 |
| BALYASNY ASSET MANAGEMENT L.P. | History | New | 10,530 | 178 | 0.0% | — | 53 | +10,530 | New | Q4 2025 | Feb 17, 2026 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | History | New | 10,429 | 176 | 0.0% | — | 54 | +10,429 | New | Q4 2025 | Feb 13, 2026 |
| UBS Group AG | History | Added to | 6,817 | 115 | 0.0% | 0.0% | 55 | +4,466 | 189.96% | Q4 2025 | Jan 29, 2026 |
| CIBC Private Wealth Group LLC | History | Reduced | 6,650 | 112 | 0.0% | 0.0% | 56 | -350 | -5.0% | Q4 2025 | Feb 12, 2026 |
| Tower Research Capital LLC (TRC) | History | New | 5,230 | 88 | 0.0% | — | 57 | +5,230 | New | Q4 2025 | Feb 17, 2026 |
| Kestra Advisory Services, LLC | History | New | 3,952 | 66 | 0.0% | — | 58 | +3,952 | New | Q4 2025 | Feb 13, 2026 |
| CITIGROUP INC | History | Added to | 3,309 | 55 | 0.0% | 0.0% | 59 | +2,890 | 689.74% | Q4 2025 | Feb 13, 2026 |
| OSAIC HOLDINGS, INC. | History | Added to | 2,365 | 39 | 0.0% | 0.0% | 60 | +1,327 | 127.84% | Q4 2025 | Feb 17, 2026 |
| SIMPLEX TRADING, LLC | History | New | 2,001 | 33 | 0.0% | — | 61 | +2,001 | New | Q4 2025 | Feb 11, 2026 |
| SBI Securities Co., Ltd. | History | Reduced | 1,290 | 21 | 0.0% | 0.0% | 62 | -173 | -11.83% | Q4 2025 | Feb 03, 2026 |
| Farther Finance Advisors, LLC | History | Added to | 1,180 | 19 | 0.0% | 0.0% | 63 | +863 | 272.24% | Q4 2025 | Jan 23, 2026 |
| FMR LLC | History | No change | 1,111 | 18 | 0.0% | 0.0% | 64 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| CoreCap Advisors, LLC | History | Added to | 950 | 16 | 0.0% | 0.0% | 65 | +450 | 90.0% | Q4 2025 | Jan 13, 2026 |
| BNP PARIBAS FINANCIAL MARKETS | History | Reduced | 796 | 13 | 0.0% | 0.0% | 66 | -2,657 | -76.95% | Q4 2025 | Feb 10, 2026 |
| Parvin Asset Management, LLC | History | New | 750 | 12 | 0.01% | — | 68 | +750 | New | Q4 2025 | Feb 17, 2026 |
| ROYAL BANK OF CANADA | History | New | 711 | 12 | 0.0% | — | 67 | +711 | New | Q4 2025 | Feb 17, 2026 |
| INTERNATIONAL ASSETS INVESTMENT MANAGEMENT, LLC | History | New | 700 | 11 | 0.0% | — | 69 | +700 | New | Q4 2025 | Feb 03, 2026 |
| JONES FINANCIAL COMPANIES LLLP | History | Added to | 580 | 9 | 0.0% | 0.0% | 70 | +445 | 329.63% | Q4 2025 | Feb 17, 2026 |
| HAZLETT, BURT & WATSON, INC. | History | New | 400 | 7 | 0.0% | — | 71 | +400 | New | Q4 2025 | Feb 10, 2026 |
| RHUMBLINE ADVISERS | History | No change | 439 | 7 | 0.0% | 0.0% | 72 | 0 | 0.0% | Q4 2025 | Feb 13, 2026 |
| Aventura Private Wealth, LLC | History | Reduced | 324 | 5 | 0.0% | 0.01% | 74 | -1,376 | -80.94% | Q4 2025 | Jan 07, 2026 |
| Sunbelt Securities, Inc. | History | No change | 300 | 5 | 0.0% | 0.0% | 73 | 0 | 0.0% | Q4 2025 | Feb 20, 2026 |
| Hurley Capital, LLC | History | New | 206 | 3 | 0.0% | — | 76 | +206 | New | Q4 2025 | Feb 17, 2026 |
| Kingdom Financial Group LLC. | History | New | 194 | 3 | 0.0% | — | 77 | +194 | New | Q4 2025 | Feb 06, 2026 |
| CWM, LLC | History | Added to | 204 | 3 | 0.0% | 0.0% | 75 | +143 | 234.43% | Q4 2025 | Jan 26, 2026 |
| Capital Advisors, Ltd. LLC | History | No change | 122 | 2 | 0.0% | 0.0% | 78 | 0 | 0.0% | Q4 2025 | Jan 21, 2026 |
| Triumph Capital Management | History | New | 100 | 1 | 0.0% | — | 79 | +100 | New | Q4 2025 | Feb 12, 2026 |
| REAP Financial Group, LLC | History | No change | 100 | 1 | 0.0% | 0.0% | 80 | 0 | 0.0% | Q4 2025 | Feb 10, 2026 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | History | Closed out | 0 | 0 | — | 0.0% | — | -53,499 | -100.0% | Q3 2025 | Nov 13, 2025 |
| Informed Momentum Co LLC | History | Closed out | 0 | 0 | — | 0.1% | — | -45,837 | -100.0% | Q3 2025 | Nov 14, 2025 |
| Squarepoint Ops LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -26,803 | -100.0% | Q3 2025 | Nov 14, 2025 |
| RENAISSANCE TECHNOLOGIES LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -24,800 | -100.0% | Q3 2025 | Nov 13, 2025 |
| HRT FINANCIAL LP | History | Closed out | 0 | 0 | — | 0.0% | — | -10,805 | -100.0% | Q3 2025 | Nov 14, 2025 |
| Quantbot Technologies LP | History | Closed out | 0 | 0 | — | 0.0% | — | -1,073 | -100.0% | Q3 2025 | Nov 12, 2025 |
| GROUP ONE TRADING LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -996 | -100.0% | Q3 2025 | Nov 12, 2025 |
| Advisory Services Network, LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -650 | -100.0% | Q3 2025 | Nov 18, 2025 |
| IFP Advisors, Inc | History | Closed out | 0 | 0 | — | — | — | -3 | -100.0% | Q3 2025 | Feb 06, 2026 |
| HARBOUR INVESTMENTS, INC. | History | No change | 5 | 0 | — | — | — | 0 | 0.0% | Q4 2025 | Feb 09, 2026 |
| SIGNATUREFD, LLC | History | No change | 54 | 0 | — | 0.0% | — | 0 | 0.0% | Q4 2025 | Jan 20, 2026 |
| Optiver Holding B.V. | History | No change | 6 | 0 | — | — | — | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| Root Financial Partners, LLC | History | No change | 34 | 0 | — | — | — | 0 | 0.0% | Q4 2025 | Feb 10, 2026 |