HOUSTON, TX
GEOSPACE TECHNOLOGIES CORPGEOS— Latest position per institution from SEC 13F filings
15
Institutional holders
8.74M
Total shares held
79.91M
Estimated value
436.91K
Avg. position size
DISCIPLINED GROWTH INVESTORS INC /MN
CIK 1050442
Shares
1.10M
Value
13.44M
Filed
Mar 31, 2026
RUTABAGA CAPITAL MANAGEMENT LLC/MA
CIK 1128239
Shares
936.53K
Value
4.13K
Filed
Sep 30, 2022
TIETON CAPITAL MANAGEMENT, LLC
CIK 1381954
Shares
912.12K
Value
11.13K
Filed
Mar 31, 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
577.03K
Value
7.04M
Filed
Mar 31, 2026
DIMENSIONAL FUND ADVISORS LP
CIK 354204
Shares
491.02K
Value
5.99M
Filed
Mar 31, 2026
GRACE & WHITE INC /NY
CIK 903064
Shares
473.20K
Value
5.77M
Filed
Mar 31, 2026
SEI INVESTMENTS CO
CIK 350894
Shares
410.91K
Value
5.01M
Filed
Mar 31, 2026
GATE CITY CAPITAL MANAGEMENT, LLC
CIK 1705447
Shares
329.47K
Value
4.27M
Filed
Dec 31, 2023
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
225.57K
Value
2.75M
Filed
Mar 31, 2026
EAGLE ASSET MANAGEMENT INC
CIK 790502
Shares
213.75K
Value
942.00
Filed
Sep 30, 2022
FRANKLIN RESOURCES INC
CIK 38777
Shares
199.40K
Value
841.47K
Filed
Dec 31, 2022
G2 INVESTMENT PARTNERS MANAGEMENT LLC
CIK 1593404
Shares
192.29K
Value
1.93M
Filed
Dec 31, 2024
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 1446194
Shares
192K
Value
2.34M
Filed
Mar 31, 2026
MOORS & CABOT, INC.
CIK 1607239
Shares
190.60K
Value
2.33M
Filed
Mar 31, 2026
MARSHALL WACE, LLP
CIK 1318757
Shares
188.81K
Value
2.30M
Filed
Mar 31, 2026
HILLSDALE INVESTMENT MANAGEMENT INC.
CIK 1368465
Shares
174.14K
Value
2.30M
Filed
Mar 31, 2024
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | DISCIPLINED GROWTH INVESTORS INC /MN | 1050442 | 1.10M | 13.44M | Mar 31, 2026 |
| 2 | RUTABAGA CAPITAL MANAGEMENT LLC/MA | 1128239 | 936.53K | 4.13K | Sep 30, 2022 |
| 3 | TIETON CAPITAL MANAGEMENT, LLC | 1381954 | 912.12K | 11.13K | Mar 31, 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 | 577.03K | 7.04M | Mar 31, 2026 |
| 7 | DIMENSIONAL FUND ADVISORS LP | 354204 | 491.02K | 5.99M | Mar 31, 2026 |
| 8 | GRACE & WHITE INC /NY | 903064 | 473.20K | 5.77M | Mar 31, 2026 |
| 9 | SEI INVESTMENTS CO | 350894 | 410.91K | 5.01M | Mar 31, 2026 |
| 10 | GATE CITY CAPITAL MANAGEMENT, LLC | 1705447 | 329.47K | 4.27M | Dec 31, 2023 |
| 11 | ACUITAS INVESTMENTS, LLC | 1524828 | 252.16K | 2.61M | Sep 30, 2024 |
| 12 | FIRST EAGLE INVESTMENT MANAGEMENT, LLC | 1325447 | 240K | 2.93M | Mar 31, 2026 |
| 13 | BLACKROCK, INC. | 2012383 | 225.57K | 2.75M | Mar 31, 2026 |
| 14 | EAGLE ASSET MANAGEMENT INC | 790502 | 213.75K | 942.00 | Sep 30, 2022 |
| 15 | FRANKLIN RESOURCES INC | 38777 | 199.40K | 841.47K | Dec 31, 2022 |
| 16 | G2 INVESTMENT PARTNERS MANAGEMENT LLC | 1593404 | 192.29K | 1.93M | Dec 31, 2024 |
| 17 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 1446194 | 192K | 2.34M | Mar 31, 2026 |
| 18 | MOORS & CABOT, INC. | 1607239 | 190.60K | 2.33M | Mar 31, 2026 |
| 19 | MARSHALL WACE, LLP | 1318757 | 188.81K | 2.30M | Mar 31, 2026 |
| 20 | HILLSDALE INVESTMENT MANAGEMENT INC. | 1368465 | 174.14K | 2.30M | Mar 31, 2024 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.