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 | 1,101,426 | 13,437 | 0.27% | 0.37% | 1 | -30,142 | -2.66% | Q1 2026 | May 15, 2026 |
| Tieton Capital Management, LLC | History | Added to | 912,118 | 11,128 | 3.73% | 5.11% | 2 | +27,942 | 3.16% | Q1 2026 | May 08, 2026 |
| VANGUARD GROUP INC | History | No change | 648,222 | 10,961 | 0.0% | 0.0% | 3 | 0 | 0.0% | Q4 2025 | Jan 29, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | History | New | 577,032 | 7,039 | 0.0% | — | 4 | +577,032 | New | Q1 2026 | May 15, 2026 |
| DIMENSIONAL FUND ADVISORS LP | History | Reduced | 491,016 | 5,989 | 0.0% | 0.0% | 5 | -53,083 | -9.76% | Q1 2026 | May 07, 2026 |
| GRACE & WHITE INC /NY | History | Added to | 473,201 | 5,773 | 1.02% | 0.93% | 6 | +165,406 | 53.74% | Q1 2026 | Apr 21, 2026 |
| SEI INVESTMENTS CO | History | Added to | 410,906 | 5,013 | 0.0% | 0.0% | 7 | +213,950 | 108.63% | Q1 2026 | May 13, 2026 |
| First Eagle Investment Management, LLC | History | Reduced | 240,000 | 2,928 | 0.0% | 0.01% | 8 | -190,273 | -44.22% | Q1 2026 | May 14, 2026 |
| BlackRock, Inc. | History | Added to | 225,568 | 2,751 | 0.0% | 0.0% | 9 | +4,462 | 2.02% | Q1 2026 | May 13, 2026 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | History | Reduced | 191,995 | 2,342 | 0.0% | 0.0% | 10 | -121,190 | -38.7% | Q1 2026 | May 15, 2026 |
| Moors & Cabot, Inc. | History | Reduced | 190,600 | 2,325 | 0.1% | 0.42% | 11 | -385,350 | -66.91% | Q1 2026 | May 08, 2026 |
| MARSHALL WACE, LLP | History | Added to | 188,806 | 2,303 | 0.0% | 0.0% | 12 | +177,021 | 1502.09% | Q1 2026 | May 14, 2026 |
| Glenorchy Capital Ltd | History | Added to | 173,339 | 2,114 | 0.12% | 0.18% | 13 | +2,347 | 1.37% | Q1 2026 | May 14, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | History | Added to | 152,154 | 1,857 | 0.0% | 0.0% | 14 | +6,047 | 4.14% | Q1 2026 | May 15, 2026 |
| De Lisle Partners LLP | History | No change | 147,133 | 1,787 | 0.21% | 0.32% | 15 | 0 | 0.0% | Q1 2026 | May 13, 2026 |
| STATE STREET CORP | History | Added to | 136,853 | 1,669 | 0.0% | 0.0% | 16 | +10,917 | 8.67% | Q1 2026 | May 15, 2026 |
| US BANCORP \DE\ | History | No change | 127,134 | 1,551 | 0.0% | 0.0% | 17 | 0 | 0.0% | Q1 2026 | May 14, 2026 |
| MILLENNIUM MANAGEMENT LLC | History | Added to | 107,386 | 1,310 | 0.0% | 0.0% | 18 | +45,366 | 73.15% | Q1 2026 | May 15, 2026 |
| EagleClaw Capital Managment, LLC | History | Added to | 82,015 | 1,000 | 0.14% | 0.15% | 19 | +20,865 | 34.12% | Q1 2026 | May 08, 2026 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | History | Reduced | 78,793 | 961 | 0.02% | 0.04% | 20 | -35,914 | -31.31% | Q1 2026 | May 15, 2026 |
| VANGUARD FIDUCIARY TRUST CO | History | New | 76,065 | 927 | 0.0% | — | 21 | +76,065 | New | Q1 2026 | May 08, 2026 |
| TWO SIGMA INVESTMENTS, LP | History | Added to | 73,907 | 901 | 0.0% | 0.0% | 22 | +15,619 | 26.8% | Q1 2026 | May 15, 2026 |
| CITADEL ADVISORS LLC | History | Reduced | 47,518 | 579 | 0.0% | 0.0% | 23 | -78,508 | -62.3% | Q1 2026 | May 15, 2026 |
| Cambridge Investment Research Advisors, Inc. | History | Reduced | 44,297 | 540 | 0.0% | 0.0% | 24 | -13,877 | -23.85% | Q1 2026 | Apr 30, 2026 |
| NORTHERN TRUST CORP | History | Added to | 40,596 | 495 | 0.0% | 0.0% | 25 | +1,658 | 4.26% | Q1 2026 | May 14, 2026 |
| 683 Capital Management, LLC | History | No change | 39,252 | 478 | 0.02% | 0.03% | 26 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| AlphaQuest LLC | History | No change | 27,604 | 466 | 0.03% | 0.03% | 27 | 0 | 0.0% | Q4 2025 | Feb 09, 2026 |
| IRONWOOD INVESTMENT MANAGEMENT LLC | History | Reduced | 36,042 | 439 | 0.18% | 0.26% | 28 | -734 | -2.0% | Q1 2026 | May 15, 2026 |
| AMERICAN CENTURY COMPANIES INC | History | Reduced | 29,319 | 357 | 0.0% | 0.0% | 29 | -822 | -2.73% | Q1 2026 | May 15, 2026 |
| Kingsview Wealth Management, LLC | History | New | 28,322 | 345 | 0.0% | — | 30 | +28,322 | New | Q1 2026 | May 12, 2026 |
| ELEVATION POINT WEALTH PARTNERS, LLC | History | Added to | 24,355 | 297 | 0.01% | 0.02% | 31 | +84 | 0.35% | Q1 2026 | Apr 27, 2026 |
| Vestmark Advisory Solutions, Inc. | History | Added to | 24,313 | 296 | 0.0% | 0.01% | 32 | +42 | 0.17% | Q1 2026 | May 15, 2026 |
| Mraz, Amerine & Associates, Inc. | History | No change | 24,081 | 293 | 0.04% | 0.06% | 33 | 0 | 0.0% | Q1 2026 | May 05, 2026 |
| BNP PARIBAS FINANCIAL MARKETS | History | Added to | 23,442 | 285 | 0.0% | 0.0% | 34 | +22,646 | 2844.97% | Q1 2026 | May 12, 2026 |
| Hudson Bay Capital Management LP | History | Added to | 22,293 | 271 | 0.0% | 0.0% | 35 | +3,579 | 19.12% | Q1 2026 | May 13, 2026 |
| Qube Research & Technologies Ltd | History | Reduced | 21,909 | 267 | 0.0% | 0.0% | 37 | -10,342 | -32.07% | Q1 2026 | May 15, 2026 |
| COMMONWEALTH EQUITY SERVICES, LLC | History | No change | 21,885 | 267 | 0.0% | 0.0% | 36 | 0 | 0.0% | Q1 2026 | Apr 27, 2026 |
| Empowered Funds, LLC | History | Reduced | 20,291 | 247 | 0.0% | 0.01% | 38 | -20,000 | -49.64% | Q1 2026 | May 14, 2026 |
| BANK OF AMERICA CORP /DE/ | History | Added to | 18,060 | 220 | 0.0% | 0.0% | 39 | +3,395 | 23.15% | Q1 2026 | May 15, 2026 |
| Tannin Capital LLC | History | Added to | 17,209 | 209 | 0.15% | 0.2% | 40 | +3,664 | 27.05% | Q1 2026 | May 12, 2026 |
| MORGAN STANLEY | History | Reduced | 16,518 | 201 | 0.0% | 0.0% | 41 | -746 | -4.32% | Q1 2026 | May 15, 2026 |
| Schonfeld Strategic Advisors LLC | History | New | 16,282 | 198 | 0.0% | — | 42 | +16,282 | New | Q1 2026 | May 15, 2026 |
| ESSEX INVESTMENT MANAGEMENT CO LLC | History | No change | 13,636 | 166 | 0.03% | 0.04% | 43 | 0 | 0.0% | Q1 2026 | May 11, 2026 |
| IMC-Chicago, LLC | History | Added to | 13,498 | 164 | 0.0% | 0.0% | 44 | +1,020 | 8.17% | Q1 2026 | May 05, 2026 |
| BARCLAYS PLC | History | Reduced | 11,866 | 144 | 0.0% | 0.0% | 45 | -11,478 | -49.17% | Q1 2026 | May 14, 2026 |
| OMERS ADMINISTRATION Corp | History | Reduced | 11,100 | 135 | 0.0% | 0.0% | 46 | -9,000 | -44.78% | Q1 2026 | May 15, 2026 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | History | Reduced | 10,335 | 126 | 0.0% | 0.0% | 47 | -94 | -0.9% | Q1 2026 | May 15, 2026 |
| WELLS FARGO & COMPANY/MN | History | Reduced | 10,178 | 124 | 0.0% | 0.0% | 48 | -730 | -6.69% | Q1 2026 | May 11, 2026 |
| HUB Investment Partners, LLC | History | New | 10,000 | 122 | 0.0% | — | 49 | +10,000 | New | Q1 2026 | May 15, 2026 |
| CIBC Private Wealth Group LLC | History | No change | 6,650 | 112 | 0.0% | 0.0% | 50 | 0 | 0.0% | Q4 2025 | Feb 12, 2026 |
| Vanguard Global Advisers, LLC | History | New | 5,026 | 61 | 0.0% | — | 51 | +5,026 | New | Q1 2026 | May 08, 2026 |
| GROUP ONE TRADING LLC | History | New | 2,575 | 31 | 0.0% | — | 52 | +2,575 | New | Q1 2026 | May 13, 2026 |
| PNC FINANCIAL SERVICES GROUP, INC. | History | New | 2,000 | 24 | 0.0% | — | 53 | +2,000 | New | Q1 2026 | May 08, 2026 |
| SBI Securities Co., Ltd. | History | Added to | 1,806 | 22 | 0.0% | 0.0% | 54 | +516 | 40.0% | Q1 2026 | Apr 27, 2026 |
| OSAIC HOLDINGS, INC. | History | Reduced | 1,643 | 20 | 0.0% | 0.0% | 55 | -722 | -30.53% | Q1 2026 | May 15, 2026 |
| TrinityBridge Ltd | History | New | 1,600 | 19 | 0.0% | — | 56 | +1,600 | New | Q1 2026 | May 12, 2026 |
| UBS Group AG | History | Reduced | 1,401 | 17 | 0.0% | 0.0% | 57 | -5,416 | -79.45% | Q1 2026 | May 05, 2026 |
| Steward Partners Investment Advisory, LLC | History | New | 1,200 | 14 | 0.0% | — | 58 | +1,200 | New | Q1 2026 | May 08, 2026 |
| CITIGROUP INC | History | Reduced | 1,126 | 13 | 0.0% | 0.0% | 60 | -2,183 | -65.97% | Q1 2026 | May 11, 2026 |
| FMR LLC | History | Reduced | 1,109 | 13 | 0.0% | 0.0% | 59 | -2 | -0.18% | Q1 2026 | May 15, 2026 |
| JONES FINANCIAL COMPANIES LLLP | History | Added to | 1,060 | 12 | 0.0% | 0.0% | 61 | +480 | 82.76% | Q1 2026 | May 15, 2026 |
| CoreCap Advisors, LLC | History | No change | 950 | 11 | 0.0% | 0.0% | 62 | 0 | 0.0% | Q1 2026 | Apr 07, 2026 |
| Larson Financial Group LLC | History | New | 858 | 10 | 0.0% | — | 63 | +858 | New | Q1 2026 | May 15, 2026 |
| Truvestments Capital LLC | History | New | 745 | 9 | 0.0% | — | 65 | +745 | New | Q1 2026 | May 13, 2026 |
| Covestor Ltd | History | New | 728 | 9 | 0.01% | — | 66 | +728 | New | Q1 2026 | May 05, 2026 |
| Parvin Asset Management, LLC | History | No change | 750 | 9 | 0.01% | 0.01% | 64 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| HARBOUR INVESTMENTS, INC. | History | Added to | 505 | 6 | 0.0% | — | 67 | +500 | 10000.0% | Q1 2026 | May 15, 2026 |
| ROYAL BANK OF CANADA | History | Reduced | 466 | 5 | 0.0% | 0.0% | 68 | -245 | -34.46% | Q1 2026 | May 15, 2026 |
| RHUMBLINE ADVISERS | History | No change | 439 | 5 | 0.0% | 0.0% | 69 | 0 | 0.0% | Q1 2026 | May 12, 2026 |
| SIMPLEX TRADING, LLC | History | Reduced | 396 | 4 | 0.0% | 0.0% | 70 | -1,605 | -80.21% | Q1 2026 | May 14, 2026 |
| INTERNATIONAL ASSETS INVESTMENT MANAGEMENT, LLC | History | Reduced | 400 | 4 | 0.0% | 0.0% | 71 | -300 | -42.86% | Q1 2026 | May 01, 2026 |
| Aventura Private Wealth, LLC | History | Added to | 385 | 4 | 0.0% | 0.0% | 72 | +61 | 18.83% | Q1 2026 | May 05, 2026 |
| Sunbelt Securities, Inc. | History | No change | 300 | 3 | 0.0% | 0.0% | 73 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| Farther Finance Advisors, LLC | History | Reduced | 192 | 2 | 0.0% | 0.0% | 77 | -988 | -83.73% | Q1 2026 | Apr 07, 2026 |
| IFP Advisors, Inc | History | New | 232 | 2 | 0.0% | — | 79 | +232 | New | Q1 2026 | Apr 13, 2026 |
| Advisory Services Network, LLC | History | New | 200 | 2 | 0.0% | — | 78 | +200 | New | Q1 2026 | May 15, 2026 |
| Lloyd Advisory Services, LLC. | History | New | 194 | 2 | 0.0% | — | 80 | +194 | New | Q1 2026 | May 13, 2026 |
| CWM, LLC | History | Reduced | 190 | 2 | 0.0% | 0.0% | 74 | -14 | -6.86% | Q1 2026 | May 14, 2026 |
| Hurley Capital, LLC | History | No change | 206 | 2 | 0.0% | 0.0% | 75 | 0 | 0.0% | Q1 2026 | May 06, 2026 |
| Kingdom Financial Group LLC. | History | No change | 194 | 2 | 0.0% | 0.0% | 76 | 0 | 0.0% | Q1 2026 | May 13, 2026 |
| TOTH FINANCIAL ADVISORY CORP | History | New | 100 | 1 | 0.0% | — | 83 | +100 | New | Q1 2026 | Apr 16, 2026 |
| Capital Advisors, Ltd. LLC | History | No change | 122 | 1 | 0.0% | 0.0% | 81 | 0 | 0.0% | Q1 2026 | Apr 16, 2026 |
| Triumph Capital Management | History | No change | 100 | 1 | 0.0% | 0.0% | 82 | 0 | 0.0% | Q1 2026 | May 13, 2026 |
| GOLDMAN SACHS GROUP INC | History | Closed out | 0 | 0 | — | 0.0% | — | -60,136 | -100.0% | Q1 2026 | May 15, 2026 |
| Brooklyn Investment Group | History | Closed out | 0 | 0 | — | 0.04% | — | -43,799 | -100.0% | Q1 2026 | Apr 29, 2026 |
| Peapod Lane Capital LLC | History | Closed out | 0 | 0 | — | 0.54% | — | -37,817 | -100.0% | Q1 2026 | May 01, 2026 |
| ExodusPoint Capital Management, LP | History | Closed out | 0 | 0 | — | 0.0% | — | -25,049 | -100.0% | Q1 2026 | May 14, 2026 |
| JANE STREET GROUP, LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -24,918 | -100.0% | Q1 2026 | May 12, 2026 |
| GSA CAPITAL PARTNERS LLP | History | Closed out | 0 | 0 | — | 0.04% | — | -24,520 | -100.0% | Q1 2026 | May 08, 2026 |
| XTX Topco Ltd | History | Closed out | 0 | 0 | — | 0.01% | — | -22,936 | -100.0% | Q1 2026 | May 15, 2026 |
| ACADIAN ASSET MANAGEMENT LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -22,058 | -100.0% | Q1 2026 | May 13, 2026 |
| FourThought Financial Partners, LLC | History | Closed out | 0 | 0 | — | 0.02% | — | -16,339 | -100.0% | Q1 2026 | May 07, 2026 |
| LPL Financial LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -13,200 | -100.0% | Q1 2026 | May 06, 2026 |
| BALYASNY ASSET MANAGEMENT L.P. | History | Closed out | 0 | 0 | — | 0.0% | — | -10,530 | -100.0% | Q1 2026 | May 15, 2026 |
| Tower Research Capital LLC (TRC) | History | Closed out | 0 | 0 | — | 0.0% | — | -5,230 | -100.0% | Q1 2026 | May 15, 2026 |
| Kestra Advisory Services, LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -3,952 | -100.0% | Q1 2026 | Apr 30, 2026 |
| HAZLETT, BURT & WATSON, INC. | History | Closed out | 0 | 0 | — | 0.0% | — | -400 | -100.0% | Q1 2026 | May 14, 2026 |
| REAP Financial Group, LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -100 | -100.0% | Q1 2026 | May 11, 2026 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | History | New | 25 | 0 | — | — | — | +25 | New | Q1 2026 | May 13, 2026 |
| Allworth Financial LP | History | New | 15 | 0 | — | — | — | +15 | New | Q1 2026 | May 14, 2026 |
| Caitong International Asset Management Co., Ltd | History | New | 6 | 0 | — | — | — | +6 | New | Q1 2026 | May 11, 2026 |
| SIGNATUREFD, LLC | History | No change | 54 | 0 | — | — | — | 0 | 0.0% | Q1 2026 | Apr 07, 2026 |
| Optiver Holding B.V. | History | No change | 6 | 0 | — | — | — | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| Root Financial Partners, LLC | History | No change | 34 | 0 | — | — | — | 0 | 0.0% | Q1 2026 | Apr 24, 2026 |