GEOS Geospace Technologies Corporation
Geospace Technologies Corporation (GEOS) Institutional Ownership
What the institutions did with GEOS last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
Sign in or subscribeOwnership map
Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| Tieton Capital Management, LLC | 907.3K | 17.5% |
| GRACE & WHITE INC /NY | 673.2K | 13.0% |
| VANGUARD CAPITAL MANAGEMENT LLC | 515.1K | 9.9% |
| DIMENSIONAL FUND ADVISORS LP | 392.4K | 7.6% |
| MARSHALL WACE, LLP | 301.9K | 5.8% |
| BlackRock, Inc. | 231.8K | 4.5% |
| US BANCORP \DE\ | 212.8K | 4.1% |
| SEI INVESTMENTS CO | 199.4K | 3.8% |
| GEODE CAPITAL MANAGEMENT, LLC | 164.2K | 3.2% |
| STATE STREET CORP | 163.1K | 3.1% |
| De Lisle Partners LLP | 147.1K | 2.8% |
| ROBOTTI ROBERT | 128.4K | 2.5% |
| TWO SIGMA INVESTMENTS, LP | 82.2K | 1.6% |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 79.7K | 1.5% |
| VANGUARD FIDUCIARY TRUST CO | 76.6K | 1.5% |
| Glenorchy Capital Ltd | 68.5K | 1.3% |
| Cambridge Investment Research Advisors, Inc. | 59.7K | 1.2% |
| CITADEL ADVISORS LLC | 58.0K | 1.1% |
| EagleClaw Capital Managment, LLC | 50.0K | 1.0% |
| RENAISSANCE TECHNOLOGIES LLC | 44.3K | 0.9% |
| ACADIAN ASSET MANAGEMENT LLC | 42.7K | 0.8% |
| IRONWOOD INVESTMENT MANAGEMENT LLC | 36.3K | 0.7% |
| JACOBS LEVY EQUITY MANAGEMENT, INC | 35.6K | 0.7% |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 33.0K | 0.6% |
| Kingsview Wealth Management, LLC | 31.3K | 0.6% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| DISCIPLINED GROWTH INVESTORS INC /MN | Sold Out | 1.1M | 0 | -1.1M |
| First Eagle Investment Management, LLC | Sold Out | 240.0K | 0 | -240.0K |
| SEI INVESTMENTS CO | Reduced | 410.9K | 199.4K | -211.5K |
| GRACE & WHITE INC /NY | Increased | 473.2K | 673.2K | +200.0K |
| Moors & Cabot, Inc. | Reduced | 190.6K | 19.5K | -171.1K |
| ROBOTTI ROBERT | New | 0 | 128.4K | +128.4K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | 146.4K | 33.0K | -113.4K |
| MARSHALL WACE, LLP | Increased | 188.8K | 301.9K | +113.1K |
| MILLENNIUM MANAGEMENT LLC | Sold Out | 107.4K | 0 | -107.4K |
| Glenorchy Capital Ltd | Reduced | 173.3K | 68.5K | -104.9K |
| DIMENSIONAL FUND ADVISORS LP | Reduced | 491.0K | 392.4K | -98.6K |
| US BANCORP \DE\ | Increased | 127.1K | 212.8K | +85.6K |
| VANGUARD CAPITAL MANAGEMENT LLC | Reduced | 577.0K | 515.1K | -62.0K |
| RENAISSANCE TECHNOLOGIES LLC | New | 0 | 44.3K | +44.3K |
| ACADIAN ASSET MANAGEMENT LLC | New | 0 | 42.7K | +42.7K |
| 683 Capital Management, LLC | Sold Out | 39.3K | 0 | -39.3K |
| JACOBS LEVY EQUITY MANAGEMENT, INC | New | 0 | 35.6K | +35.6K |
| EagleClaw Capital Managment, LLC | Reduced | 82.0K | 50.0K | -32.0K |
| HRT FINANCIAL LP | New | 0 | 30.7K | +30.7K |
| STATE STREET CORP | Increased | 136.9K | 163.1K | +26.2K |
| GOLDMAN SACHS GROUP INC | New | 0 | 25.8K | +25.8K |
| CITADEL ADVISORS LLC | Increased | 32.7K | 58.0K | +25.3K |
| BNP PARIBAS FINANCIAL MARKETS | Reduced | 23.4K | 76 | -23.4K |
| Hudson Bay Capital Management LP | Sold Out | 22.3K | 0 | -22.3K |
| Qube Research & Technologies Ltd | Sold Out | 21.9K | 0 | -21.9K |
| JANE STREET GROUP, LLC | New | 0 | 21.3K | +21.3K |
| AXQ CAPITAL, LP | New | 0 | 19.6K | +19.6K |
| BANK OF AMERICA CORP /DE/ | Sold Out | 18.1K | 0 | -18.1K |
| Schonfeld Strategic Advisors LLC | Sold Out | 16.3K | 0 | -16.3K |
| GSA CAPITAL PARTNERS LLP | New | 0 | 15.5K | +15.5K |
| Cambridge Investment Research Advisors, Inc. | Increased | 44.3K | 59.7K | +15.4K |
| ESSEX INVESTMENT MANAGEMENT CO LLC | Sold Out | 13.6K | 0 | -13.6K |
| XTX Topco Ltd | New | 0 | 13.4K | +13.4K |
| Invesco Ltd. | New | 0 | 12.7K | +12.7K |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 152.2K | 164.2K | +12.0K |
| NORTHERN TRUST CORP | Reduced | 40.6K | 28.7K | -11.9K |
| BARCLAYS PLC | Sold Out | 11.9K | 0 | -11.9K |
| OMERS ADMINISTRATION Corp | Sold Out | 11.1K | 0 | -11.1K |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | Sold Out | 10.3K | 0 | -10.3K |
| IMC-Chicago, LLC | Increased | 13.5K | 23.1K | +9.6K |
| TWO SIGMA INVESTMENTS, LP | Increased | 73.9K | 82.2K | +8.3K |
| BlackRock, Inc. | Increased | 225.6K | 231.8K | +6.2K |
| UBS Group AG | Increased | 1.4K | 7.3K | +5.9K |
| Tieton Capital Management, LLC | Reduced | 912.1K | 907.3K | -4.9K |
| Arax Advisory Partners | New | 0 | 4.7K | +4.7K |
| Kingsview Wealth Management, LLC | Increased | 28.3K | 31.3K | +3.0K |
| Tannin Capital LLC | Increased | 17.2K | 19.7K | +2.4K |
| WELLS FARGO & COMPANY/MN | Increased | 10.2K | 12.4K | +2.3K |
| PNC FINANCIAL SERVICES GROUP, INC. | Increased | 2.0K | 4.0K | +2.0K |
| SIMPLEX TRADING, LLC | Increased | 396 | 2.1K | +1.7K |
| JPMORGAN CHASE & CO | New | 0 | 1.6K | +1.6K |
| TrinityBridge Ltd | Sold Out | 1.6K | 0 | -1.6K |
| GROUP ONE TRADING LLC | Reduced | 2.6K | 1.1K | -1.5K |
| MORGAN STANLEY | Reduced | 16.5K | 15.3K | -1.3K |
| Steward Partners Investment Advisory, LLC | Sold Out | 1.2K | 0 | -1.2K |
| Integrated Wealth Concepts LLC | New | 0 | 1.2K | +1.2K |
| CITIGROUP INC | Sold Out | 1.1K | 0 | -1.1K |
| AMERICAN CENTURY COMPANIES INC | Reduced | 29.3K | 28.2K | -1.1K |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | Increased | 78.8K | 79.7K | +900 |
| MCGUIRE CAPITAL ADVISORS INC | New | 0 | 750 | +750 |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.