GEOS
GEOSPACE TECHNOLOGIES CORPMarquee-fund ownership over time
Current holders
Sorted by tenure (longest first)| Fund | First disclosed | Held | Entry price | Latest close | Return on entry |
|---|---|---|---|---|---|
| Citadel Advisors re-entered | Q2 2025(8Q snapshot) | 4Q | $6.16 | $8.07 | +31% |
| Two Sigma Investments | Q3 2025(8Q snapshot) | 3Q | $16 | $8.07 | -48% |
| Millennium Management | Q3 2025(8Q snapshot) | 3Q | $16 | $8.07 | -48% |
“Return on entry” is the price-only move from the fund's first disclosure to today — it ignores any adds, trims, or dividends. A fund that built its position over multiple quarters has a true cost basis somewhere between entry price and latest close; this figure is the upper bound.
Past holders
Funds that exited at some point| Fund | Last entry | Exited | Entry → Exit | Return |
|---|---|---|---|---|
| Renaissance Technologies | Q3 2024 | Q1 2026 | → $9.00 | +8% |
| AQR Capital Management | Q4 2024 | Q2 2025 | → $6.16 | -55% |
Insider activity
Form 4 — officers, directors, 10%+ ownersFiled within two business days of each transaction by anyone with material insider status at GEOSPACE TECHNOLOGIES CORP. Pair with the holders table above as a sanity check: heavy insider buying alongside marquee-fund accumulation is the strongest accumulation signal; heavy insider selling alongside fund exits is the strongest distribution signal.
30d / 90d windows measured from Feb 9, 2026 — the most recent Form 4 on file — not from today.
- Form 40001437749-26-003437Feb 9, 2026
- Form 40001437749-26-003435Feb 9, 2026
- Form 40001437749-26-003433Feb 9, 2026
- Form 40001437749-26-003431Feb 9, 2026
- Form 40001437749-26-003430Feb 9, 2026
- Form 40001437749-26-003429Feb 9, 2026
- Form 40001437749-25-036999Dec 5, 2025
- Form 40001437749-25-036998Dec 5, 2025
- Form 40001437749-25-036997Dec 5, 2025
- Form 4/Aamend0001437749-25-036981Dec 5, 2025
- Form 40001437749-25-036509Dec 1, 2025
- Form 40001437749-25-036289Nov 25, 2025
- Form 40001437749-25-036262Nov 25, 2025
- Form 40001437749-25-036260Nov 25, 2025
- Form 40001437749-25-003125Feb 7, 2025
Fundamentals
XBRL · GEOSPACE TECHNOLOGIES CORPAnnual figures sourced directly from GEOSPACE TECHNOLOGIES CORP's 10-K / 10-Q filings via SEC EDGAR XBRL. Latest fiscal year and the year-over-year change, with up to ten years of history.
Recent SEC filings
10-K · 10-Q · 8-K · 13D/G · proxyThe most recent material filings for GEOSPACE TECHNOLOGIES CORP — earnings, material events, ownership disclosures, proxy statements. Form 4 insider activity is shown in the panel above.
- 10-QFORM 10-QMay 8, 2026
- 8-KFORM 8-KMay 7, 2026
- 8-KFORM 8-KApr 6, 2026
- 10-QFORM 10-QFeb 12, 2026
- 8-KFORM 8-KFeb 5, 2026
- 8-KFORM 8-KFeb 4, 2026
- DEF 14AFORM DEF 14ADec 23, 2025
- 10-KFORM 10-KNov 21, 2025
- 8-KFORM 8-KNov 20, 2025
- 8-KFORM 8-KSep 4, 2025
- 10-QFORM 10-QAug 8, 2025
- 8-KFORM 8-KAug 8, 2025
- 10-QFORM 10-QMay 9, 2025
- 8-KFORM 8-KMay 9, 2025
- 8-KFORM 8-KMar 4, 2025
Trade history
Every open→close lifecycle across tracked funds| Fund | Open date | Close date | Open price | Close price / current | Return |
|---|---|---|---|---|---|
| Citadel Advisors | Q4 2025 | open | $24 | $8.07 | -67% |
| Two Sigma Investments | Q3 2025 | open | $16 | $8.07 | -48% |
| Millennium Management | Q3 2025 | open | $16 | $8.07 | -48% |
| Citadel Advisors | Q2 2025 | Q3 2025 | $6.16 | $16 | +154% |
| AQR Capital Management | Q4 2024 | Q2 2025 | $14 | $6.16 | -55% |
| Renaissance Technologies | Q3 2024 | Q1 2026 | $8.34 | $9.00 | +8% |
- Covers only the 27 marquee funds tracked here, not the full institutional universe. A “0 holders” reading does not mean unowned.
- Heavy funds (Renaissance Technologies, Citadel Advisors, Soros Fund Management, Two Sigma Investments, D.E. Shaw, AQR Capital Management, Millennium Management, Point72 Asset Management) use 8-quarter snapshots, so their pre-2024 history is missing.
- “Current” reflects each fund's most recent 13F — filings lag the actual trade by up to 45 days; positions shown may have changed since.
- Cost = price at the entry filing date. Re-entered positions show the most recent open lot.
- Options, ADRs, and unmapped CUSIPs are excluded from the follower-backtest pipeline that produces these snapshots, so certain holding types won't appear here.