HOUSTON, TX
GEOSPACE TECHNOLOGIES CORPGEOS— Latest position per institution from SEC 13F filings
15
Institutional holders
7.88M
Total shares held
66.03M
Estimated value
394.20K
Avg. position size
DISCIPLINED GROWTH INVESTORS INC /MN
CIK 1050442
Shares
1.10M
Value
13.44M
Filed
Mar 31, 2026
TIETON CAPITAL MANAGEMENT, LLC
CIK 1381954
Shares
907.26K
Value
6.14K
Filed
Jun 30, 2026
GRACE & WHITE INC /NY
CIK 903064
Shares
793.50K
Value
3.88M
Filed
Sep 30, 2026
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
789.49K
Value
7.09M
Filed
Jun 30, 2024
VANGUARD GROUP INC
CIK 102909
Shares
648.22K
Value
10.96M
Filed
Dec 31, 2025
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
515.07K
Value
3.49M
Filed
Jun 30, 2026
DIMENSIONAL FUND ADVISORS LP
CIK 354204
Shares
392.42K
Value
2.66M
Filed
Jun 30, 2026
GATE CITY CAPITAL MANAGEMENT, LLC
CIK 1705447
Shares
329.47K
Value
4.27M
Filed
Dec 31, 2023
MARSHALL WACE, LLP
CIK 1318757
Shares
301.92K
Value
2.04M
Filed
Jun 30, 2026
ACUITAS INVESTMENTS, LLC
CIK 1524828
Shares
252.16K
Value
2.61M
Filed
Sep 30, 2024
FIRST EAGLE INVESTMENT MANAGEMENT, LLC
CIK 1325447
Shares
240K
Value
2.93M
Filed
Mar 31, 2026
BLACKROCK, INC.
CIK 2012383
Shares
231.76K
Value
1.57M
Filed
Jun 30, 2026
US BANCORP \DE\
CIK 36104
Shares
212.77K
Value
1.44M
Filed
Jun 30, 2026
SEI INVESTMENTS CO
CIK 350894
Shares
199.37K
Value
1.35M
Filed
Jun 30, 2026
G2 INVESTMENT PARTNERS MANAGEMENT LLC
CIK 1593404
Shares
192.29K
Value
1.93M
Filed
Dec 31, 2024
HILLSDALE INVESTMENT MANAGEMENT INC.
CIK 1368465
Shares
174.14K
Value
2.30M
Filed
Mar 31, 2024
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
164.18K
Value
1.11M
Filed
Jun 30, 2026
STATE STREET CORP
CIK 93751
Shares
163.07K
Value
1.10M
Filed
Jun 30, 2026
DE LISLE PARTNERS LLP
CIK 2011184
Shares
147.13K
Value
998.30K
Filed
Jun 30, 2026
ROBOTTI ROBERT
CIK 1105838
Shares
128.44K
Value
869.51K
Filed
Jun 30, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | DISCIPLINED GROWTH INVESTORS INC /MN | 1050442 | 1.10M | 13.44M | Mar 31, 2026 |
| 2 | TIETON CAPITAL MANAGEMENT, LLC | 1381954 | 907.26K | 6.14K | Jun 30, 2026 |
| 3 | GRACE & WHITE INC /NY | 903064 | 793.50K | 3.88M | Sep 30, 2026 |
| 4 | BLACKROCK FINANCE, INC. | 1364742 | 789.49K | 7.09M | Jun 30, 2024 |
| 5 | VANGUARD GROUP INC | 102909 | 648.22K | 10.96M | Dec 31, 2025 |
| 6 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 515.07K | 3.49M | Jun 30, 2026 |
| 7 | DIMENSIONAL FUND ADVISORS LP | 354204 | 392.42K | 2.66M | Jun 30, 2026 |
| 8 | GATE CITY CAPITAL MANAGEMENT, LLC | 1705447 | 329.47K | 4.27M | Dec 31, 2023 |
| 9 | MARSHALL WACE, LLP | 1318757 | 301.92K | 2.04M | Jun 30, 2026 |
| 10 | ACUITAS INVESTMENTS, LLC | 1524828 | 252.16K | 2.61M | Sep 30, 2024 |
| 11 | FIRST EAGLE INVESTMENT MANAGEMENT, LLC | 1325447 | 240K | 2.93M | Mar 31, 2026 |
| 12 | BLACKROCK, INC. | 2012383 | 231.76K | 1.57M | Jun 30, 2026 |
| 13 | US BANCORP \DE\ | 36104 | 212.77K | 1.44M | Jun 30, 2026 |
| 14 | SEI INVESTMENTS CO | 350894 | 199.37K | 1.35M | Jun 30, 2026 |
| 15 | G2 INVESTMENT PARTNERS MANAGEMENT LLC | 1593404 | 192.29K | 1.93M | Dec 31, 2024 |
| 16 | HILLSDALE INVESTMENT MANAGEMENT INC. | 1368465 | 174.14K | 2.30M | Mar 31, 2024 |
| 17 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 164.18K | 1.11M | Jun 30, 2026 |
| 18 | STATE STREET CORP | 93751 | 163.07K | 1.10M | Jun 30, 2026 |
| 19 | DE LISLE PARTNERS LLP | 2011184 | 147.13K | 998.30K | Jun 30, 2026 |
| 20 | ROBOTTI ROBERT | 1105838 | 128.44K | 869.51K | Jun 30, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.