Security key
37364X109
GEOSPACE TECHNOLOGIES CORP - Common Stock (GEOS)
CUSIP: 37364X109
Q1 2021 13F Holders as of 31 Mar 2021
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 7,713,755
- Total 13F value
- $70,349,186
- Share change
- +352,401
- SEC-reported price per share
- $9.12
- Number of holders
- 44
- Value change
- +$3,313,524
- Number of buys
- 20
- Number of sells
- 27
- Shares outstanding
- 12,943,145
Holder snapshot
6 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q1 2021
Institutions
44
Top holders
10
GEOS full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q2 2026
GEOSPACE TECHNOLOGIES CORP SEC filings
GEOSPACE TECHNOLOGIES CORP company facts
Broader feeds
Reporting periods
Holder history for CUSIP 37364X109
Recent filing periods:
Ownership snapshot
Top reported holders of GEOS - GEOSPACE TECHNOLOGIES CORP - Common Stock (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
DISCIPLINED GROWTH INVEST...
Disclosed value leader
DISCIPLINED GROWTH INVEST...
Comparable rows
15/15
Latest evidence
31 Dec 2020
13F
Lead comparable stake: 10%
Showing 1-6 of 15 holder rows.
Quick read
DISCIPLINED GROWTH INVESTORS INC /MN leads the comparable SEC ownership view at 10%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens DISCIPLINED GROWTH INVESTORS INC /MN's linked filing trail.
Comparable ownership
Top 5
DISCIPLINED GROWTH INVESTORS INC /MN
10%
FMR LLC
10%
DIMENSIONAL FUND ADVISORS LP
5.8%
VANGUARD GROUP INC
5.7%
Tieton Capital Management, LLC
4.9%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| DISCIPLINED GROWTH INVESTORS INC /MN |
13F
Company
|
10%
|
$11,613,000
1,356,681 shares
|
— | 31 Dec 2020 |
| FMR LLC |
13F
Company
|
10%
|
$11,442,000
1,336,666 shares
|
— | 31 Dec 2020 |
| DIMENSIONAL FUND ADVISORS LP |
13F
Company
|
5.8%
|
$6,453,000
753,816 shares
|
— | 31 Dec 2020 |
| VANGUARD GROUP INC |
13F
Company
|
5.7%
|
$6,364,000
743,406 shares
|
— | 31 Dec 2020 |
| Tieton Capital Management, LLC |
13F
Company
|
4.9%
|
$5,418,000
632,891 shares
|
— | 31 Dec 2020 |
| RUTABAGA CAPITAL MANAGEMENT LLC/MA |
13F
Company
|
3.2%
|
$3,530,000
412,412 shares
|
— | 31 Dec 2020 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q1 2021
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
44
Shares
7,713,755
Rows available
44
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q1 2021 vs Q1 2021 Across Filers
Q1 2021 holders
44
Q1 2021 holders
44
Holder diff
0
| Investor | Q1 2021 Shares | Q1 2021 Shares | Share Diff | Share Chg % | Q1 2021 value | Q1 2021 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend