# GEOSPACE TECHNOLOGIES CORP COM CS

GEOSPACE TECHNOLOGIES CORP COM CS is a security (CUSIP 37364X109) tracked across SEC portfolio filings. 89 institutional managers reported $68.9M on Form 13F as of 2026-06-30; 6 registered fund positions totaling $3.0M via N-PORT as of 2026-05-31.

## Summary

- Issuer: GEOSPACE TECHNOLOGIES CORP COM
- Class: CS
- CUSIP: 37364X109
- Asset category: EC
- 13F holders: 89
- 13F value: $68.9M
- 13F period: 2026-06-30
- N-PORT fund positions: 6
- N-PORT value: $3.0M
- N-PORT report: 2026-05-31

## Top institutional holders (Form 13F)

_Showing 15 of 89 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| [DISCIPLINED GROWTH INVESTORS INC /MN](https://search.stillhousedata.com/firm/106746) | MINNEAPOLIS, MN | $13.4M | 1,101,426 |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $11.0M | 648,222 |
| DIMENSIONAL FUND ADVISORS LP | AUSTIN, TX | $6.0M | 491,016 |
| SEI INVESTMENTS CO | OAKS, PA | $5.0M | 410,906 |
| [GRACE & WHITE INC /NY](https://search.stillhousedata.com/firm/110761) | NY, NY | $4.6M | 673,236 |
| BlackRock, Inc. | New York, NY | $2.8M | 225,568 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | BALA CYNWYD, PA | $2.3M | 146,395 |
| [Moors & Cabot, Inc.](https://search.stillhousedata.com/firm/594) | BOSTON, MA | $2.3M | 190,600 |
| [MARSHALL WACE, LLP](https://search.stillhousedata.com/firm/160885) | LONDON, X0 | $2.3M | 188,806 |
| [GEODE CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/115504) | BOSTON, MA | $1.9M | 152,154 |
| De Lisle Partners LLP | POOLE, X0 | $1.8M | 147,133 |
| STATE STREET CORP | BOSTON, MA | $1.7M | 136,853 |
| US BANCORP \\DE\\ | MINNEAPOLIS, MN | $1.6M | 127,134 |
| MILLENNIUM MANAGEMENT LLC | NEW YORK, NY | $1.3M | 107,386 |
| [EagleClaw Capital Managment, LLC](https://search.stillhousedata.com/firm/134045) | BOSTON, MA | $1.0M | 82,015 |

## Top fund holders (N-PORT)

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [VANGUARD EXTENDED MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002841) | VANGUARD INDEX FUNDS | $1.8M | 0.22% |
| [U.S. MICRO CAP PORTFOLIO](https://search.stillhousedata.com/fund/S000000948) | DFA INVESTMENT DIMENSIONS GROUP INC | $978K | 1.31% |
| [VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002855) | VANGUARD INSTITUTIONAL INDEX FUNDS | $70K | 0.02% |
| [Invesco NASDAQ Future Gen 200 ETF](https://search.stillhousedata.com/fund/S000077288) | Invesco Exchange-Traded Fund Trust II | $70K | 36.80% |
| [VANGUARD BALANCED INDEX FUND](https://search.stillhousedata.com/fund/S000002560) | VANGUARD VALLEY FORGE FUNDS | $64K | 0.01% |
| [Vericimetry U.S. Small Cap Value Fund](https://search.stillhousedata.com/fund/S000033942) | VERICIMETRY FUNDS | $42K | 2.50% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/37364X109.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.