Ticker · CUSIP 37364X109

GEOS

GEOSPACE TECHNOLOGIES CORP
Energy·Oil & Gas Equipment & Services
···Share
Holders (tracked)
6
Combined shares
676,607
Combined value
$11.44M
Last close
$9.66
Quarter
2025Q4
Price · 1Y$9.66+3.52 (+57.33%)H $28.41 · L $5.64 · Avg Vol 227K
Position opened
$5.00$10.00$15.00$20.00$25.00VolJul 25Oct 25Jan 26Apr 26
Tracked holders · last 8 quarters
-1 vs previous quarter over the last 8.
632024Q12025Q4
Price is -42.9% vs the avg quarter-end implied price across tracked holders.

SEC event timeline

9 events
  1. Ken Griffin (Citadel Advisors) added2026-02-17
    +7,904 shares · 2025Q4
    Position
  2. Two Sigma Investments added2026-02-17
    +21,312 shares · 2025Q4
    Position
  3. Izzy Englander (Millennium Mgmt) trimmed2026-02-17
    −58,834 shares · 2025Q4
    Position
  4. Renaissance Technologies exited2026-02-12
    −24,800 shares · 2025Q4
    Position
  5. First Eagle Investment Management trimmed2026-02-04
    −92,591 shares · 2025Q4
    Position
  6. Izzy Englander (Millennium Mgmt) trimmed2025-11-14
    −25,357 shares · 2025Q3
    Position
  7. Two Sigma Investments added2025-11-14
    +21,705 shares · 2025Q3
    Position
  8. Renaissance Technologies trimmed2025-11-13
    −20,400 shares · 2025Q3
    Position
  9. First Eagle Investment Management added2025-11-12
    +13,500 shares · 2025Q3
    Position

Insider activity

No insider transactions in the last 30 days.
View full insider history for GEOS →
Follow-the-investor returns
If you'd copied each holder of GEOS…
Cost basis inferred from each manager's quarter-over-quarter position changes. Sorted by % return on the position they're still holding.
InvestorFirst inCost basisReturnPosition value today
First Eagle Investment Management2024Q3$9.61+0.5%$4.2M
Izzy Englander (Millennium Mgmt)2016Q1$12.25-21.1%$599K
Two Sigma Investments2016Q2$16.82-42.6%$563K
Ken Griffin (Citadel Advisors)2016Q1$16.92-42.9%$567K
Ken Griffin (Citadel Advisors)2016Q1$16.92-42.9%$567K
Ken Griffin (Citadel Advisors)2016Q1$16.92-42.9%$567K

Who moved on this name in 2025Q4

Position changes reported for the latest quarter, grouped by direction.
New positions0
—
Added to2
Trimmed2
Exited1

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.
QuarterHoldersCombined value
2022Q1
4
$2.5M
2022Q2
2
$1.5M
2022Q3
2
$1.5M
2022Q4
6
$1.4M
2023Q1
6
$2.5M
2023Q2
5
$2.6M
2023Q3
5
$3.5M
2023Q4
6
$5.3M
2024Q1
3
$5.5M
2024Q2
2
$7.5M
2024Q3
5
$953K
2024Q4
3
$3.4M
2025Q1
5
$4.1M
2025Q2
6
$11.3M
2025Q3
7
$17.2M
2025Q4
6
$11.4M

Who owns GEOS

6 super-investors · 2025Q4
Tracked stake
676.6K
shares
Combined value
$11M
% of shares outstanding
—
shares-out unknown
Quarter action mix
Added4Trim2
#ManagerSharesValue
1First Eagle Investment Management430.3K$7M
2Izzy Englander
Millennium Mgmt
62.0K$1M
3Ken Griffin
Citadel Advisors
58.7K$993K
4Two Sigma Investments58.3K$986K
5Ken Griffin
Citadel Advisors
33.8K$572K
6Ken Griffin
Citadel Advisors
33.5K$566K

Recent moves

20 transactions
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