Geospace TechnologiesGEOS
13F holders, Q1 2026 (March 31)86holders +2
17new positions
15sold out
2famous investors
$12.20avg. 13F price*
At the end of Q1 2026, 86 institutions reported holding Geospace Technologies Corp. (GEOS) in their 13F filings, up 2 from Q4 2025. 17 opened new positions and 15 sold out. The largest holders were Disciplined Growth Investors Inc. ($13.4M), Tieton Capital Management, LLC ($11.1M) and Vanguard Capital Management LLC ($7.0M). 2 famous investors held it, including Israel Englander (0.0% of Millennium Management's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Geospace Technologies Corp.
- CUSIP
- 37364X109
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 17 | $794K |
| Exits | 15 | $5.3M |
All 13F filers, Q4 2025 → Q1 2026: 792,669 shares bought and 1,195,942 shares sold, net −403,273 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 86 holders
| Disciplined Growth Investors Inc. | 0.28% | Reduce -2.7% | 1,101,426 | $13.4M |
| Tieton Capital Management, LLC | 3.73% | Add +3.2% | 912,118 | $11.1M |
| Vanguard Capital Management LLC | 0.00% | — | 577,032 | $7.0M |
| Dimensional Fund Advisors LP | 0.00% | Reduce -9.8% | 491,016 | $6.0M |
| Grace & White Inc. | 1.03% | Add +53.7% | 473,201 | $5.8M |
| Sei Investments Co. | 0.00% | Add +108.6% | 410,906 | $5.0M |
| First Eagle Investment Management, LLC | 0.01% | Reduce -44.2% | 240,000 | $2.9M |
| BlackRock, Inc. | 0.00% | Add +2.0% | 225,568 | $2.8M |
| Moors & Cabot, Inc. | 0.10% | Reduce -66.9% | 190,600 | $2.3M |
| Marshall Wace, LLP | 0.00% | Add +1502.1% | 188,806 | $2.3M |
| Glenorchy Capital Ltd | 1.14% | Add +1.4% | 173,339 | $2.1M |
| Geode Capital Management, LLC | 0.00% | Add +4.1% | 152,154 | $1.9M |
| De Lisle Partners LLP | 0.21% | No change | 147,133 | $1.8M |
| Susquehanna International Group, LLP | 0.00% | Reduce -36.7% | 146,395 | $1.8M |
| State Street Corp. | 0.00% | Add +8.7% | 136,853 | $1.7M |
| US Bancorp \de | 0.00% | No change | 127,134 | $1.6M |
| Millennium Management | 0.00% | Add +73.2% | 107,386 | $1.3M |
| EagleClaw Capital Managment, LLC | 0.14% | Add +34.1% | 82,015 | $1.0M |
| Bridgeway Capital Management, LLC | 0.02% | Reduce -31.3% | 78,793 | $961K |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 76,065 | $928K |
| Two Sigma Investments, LP | 0.00% | Add +26.8% | 73,907 | $902K |
| Cambridge Investment Research Advisors, Inc. | 0.00% | Reduce -23.9% | 44,297 | $540K |
| Northern Trust Corp. | 0.00% | Add +4.3% | 40,596 | $495K |
| 683 Capital Management, LLC | 0.05% | No change | 39,252 | $479K |
| Ironwood Investment Management LLC | 0.18% | Reduce -2.0% | 36,042 | $440K |
| Citadel Advisors | 0.00% | Reduce -44.3% | 32,718 | $399K |
| American Century Companies Inc. | 0.00% | Reduce -2.7% | 29,319 | $358K |
| Kingsview Wealth Management, LLC | 0.00% | New | 28,322 | $346K |
| Elevation Point Wealth Partners, LLC | 0.01% | Add +0.3% | 24,355 | $297K |
| Vestmark Advisory Solutions, Inc. | 0.00% | Add +0.2% | 24,313 | $297K |
| Mraz, Amerine & Associates, Inc. | 0.04% | No change | 24,081 | $294K |
| BNP Paribas Financial Markets | 0.00% | Add +2845.0% | 23,442 | $286K |
| Hudson Bay Capital Management LP | 0.00% | Add +19.1% | 22,293 | $272K |
| Qube Research & Technologies Ltd | 0.00% | Reduce -32.1% | 21,909 | $267K |
| Commonwealth Equity Services, LLC | 0.00% | No change | 21,885 | $267K |
| Empowered Funds, LLC | 0.00% | Reduce -49.6% | 20,291 | $248K |
| Bank of America Corp. | 0.00% | Add +23.1% | 18,060 | $220K |
| Tannin Capital LLC | 0.15% | Add +27.1% | 17,209 | $210K |
| Morgan Stanley | 0.00% | Reduce -4.3% | 16,518 | $202K |
| Schonfeld Strategic Advisors LLC | 0.00% | New | 16,282 | $199K |
| Essex Investment Management Co. LLC | 0.03% | No change | 13,636 | $166K |
| IMC-Chicago, LLC | 0.00% | Add +8.2% | 13,498 | $165K |
| Barclays PLC | 0.00% | Reduce -49.2% | 11,866 | $145K |
| OMERS ADMINISTRATION Corp | 0.00% | Reduce -44.8% | 11,100 | $135K |
| Charles Schwab Investment Management Inc. | 0.00% | Reduce -0.9% | 10,335 | $126K |
| Wells Fargo & Company | 0.00% | Reduce -6.7% | 10,178 | $124K |
| HUB Investment Partners, LLC | 0.00% | New | 10,000 | $122K |
| Vanguard Global Advisers, LLC | 0.00% | — | 5,026 | $61K |
| Group One Trading LLC | 0.00% | New | 2,575 | $31K |
| PNC Financial Services Group, Inc. | 0.00% | New | 2,000 | $24K |
| SBI Securities Co., Ltd. | 0.00% | Add +40.0% | 1,806 | $22K |
| Osaic Holdings, Inc. | 0.00% | Reduce -30.5% | 1,643 | $20K |
| TrinityBridge Ltd | 0.00% | New | 1,600 | $19K |
| UBS Group AG | 0.00% | Reduce -79.5% | 1,401 | $17K |
| Steward Partners Investment Advisory, LLC | 0.00% | New | 1,200 | $15K |
| Citigroup Inc. | 0.00% | Reduce -66.0% | 1,126 | $14K |
| FMR LLC | 0.00% | Reduce -0.2% | 1,109 | $14K |
| Jones Financial Companies LLLP | 0.00% | Add +82.8% | 1,060 | $13K |
| CoreCap Advisors, LLC | 0.00% | No change | 950 | $12K |
| Larson Financial Group LLC | 0.00% | New | 858 | $10K |
| Parvin Asset Management, LLC | 0.01% | No change | 750 | $9K |
| Truvestments Capital LLC | 0.00% | New | 745 | $9K |
| Covestor Ltd | 0.01% | New | 728 | $9K |
| Harbour Investments, Inc. | 0.00% | Add +10000.0% | 505 | $6K |
| Rhumbline Advisers | 0.00% | No change | 439 | $5K |
| Royal Bank of Canada | 0.00% | Reduce -34.5% | 466 | $5K |
| Simplex Trading, LLC | 0.00% | Reduce -80.2% | 396 | $5K |
| International Assets Investment Management, LLC | 0.00% | Reduce -42.9% | 400 | $5K |
| Aventura Private Wealth, LLC | 0.00% | Add +18.8% | 385 | $5K |
| Sunbelt Securities, Inc. | 0.00% | No change | 300 | $4K |
| IFP Advisors, Inc | 0.00% | New | 232 | $3K |
| Hurley Capital, LLC | 0.00% | No change | 206 | $3K |
| Advisory Services Network, LLC | 0.00% | New | 200 | $2K |
| Lloyd Advisory Services, LLC. | 0.00% | New | 194 | $2K |
| Kingdom Financial Group LLC. | 0.00% | No change | 194 | $2K |
| Cwm, LLC | 0.00% | Reduce -6.9% | 190 | $2K |
| Farther Finance Advisors, LLC | 0.00% | Reduce -83.7% | 192 | $2K |
| Triumph Capital Management | 0.00% | No change | 100 | $1K |
| Toth Financial Advisory Corp. | 0.00% | New | 100 | $1K |
| Capital Advisors, Ltd. LLC | 0.00% | No change | 122 | $1K |
| Signaturefd, LLC | 0.00% | No change | 54 | $659 |
| Root Financial Partners, LLC | 0.00% | No change | 34 | $415 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | New | 25 | $305 |
| Allworth Financial LP | 0.00% | New | 15 | $183 |
| Optiver Holding B.V. | 0.00% | No change | 6 | $73 |
| Caitong International Asset Management Co., Ltd | 0.00% | New | 6 | $73 |
"% of holder's portfolio" is GEOS's weight in each manager's 13F, not the share of Geospace Technologies Corp. the manager owns.