Geospace Technologies Corporation
Ownership
Ownership Structure
Who owns Geospace Technologies Corporation (GEOS)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 97.0% of the shares are freely tradable; institutional investors hold 52.5%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Tieton Capital Management, LLC | 7.01 | 907,265 | -0.5 | 06/30/2026 |
| Grace & White Inc | 5.20 | 673,236 | +42.3 | 06/30/2026 |
| Vanguard Capital Management, LLC | 3.98 | 515,067 | -10.7 | 06/30/2026 |
| Dimensional Fund Advisors, Inc. | 3.03 | 392,423 | -20.1 | 06/30/2026 |
| Marshall Wace Asset Management Ltd | 2.33 | 301,916 | +59.9 | 06/30/2026 |
| BlackRock Inc | 1.79 | 231,765 | +2.7 | 06/30/2026 |
| U.S. Bancorp | 1.64 | 212,766 | +67.4 | 06/30/2026 |
| SEI Investments Co | 1.54 | 199,365 | -51.5 | 06/30/2026 |
| Geode Capital Management, LLC | 1.27 | 164,180 | +7.9 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard MStar Total Stk Mkt Idx Invest | 2.76 | 357,262 | +0.0 | 09/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Data as of: November 2, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.