Ticker · CUSIP 387432107
Holders (tracked)
6
Combined shares
2,177,908
Combined value
$10.10M
Last close
—
Quarter
2025Q4
Tracked holders · last 8 quarters
+1 vs previous quarter over the last 8.
SEC event timeline
10 events
- +129,370 shares · 2025Q4Position
- Two Sigma Investments added2026-02-17+5,501 shares · 2025Q4Position
- Izzy Englander (Millennium Mgmt) added2026-02-17+192,837 shares · 2025Q4Position
- AQR Capital Management trimmed2026-02-17−117,446 shares · 2025Q4Position
- Renaissance Technologies added2026-02-12+4,800 shares · 2025Q4Position
- Izzy Englander (Millennium Mgmt) added2025-11-14+218,802 shares · 2025Q3Position
- AQR Capital Management added2025-11-14+834,717 shares · 2025Q3Position
- Two Sigma Investments trimmed2025-11-14−118,325 shares · 2025Q3Position
- T. Rowe Price added2025-11-14+2,355 shares · 2025Q3Position
- Renaissance Technologies trimmed2025-11-13−19,800 shares · 2025Q3Position
Insider activity
No insider transactions in the last 30 days.
Who moved on this name in 2025Q4
Position changes reported for the latest quarter, grouped by direction.
New positions1
- Ken Griffin (Citadel Advisors)+129,370$608K
Added to3
- Izzy Englander (Millennium Mgmt)+192,837$906K
- Two Sigma Investments+5,501$26K
- Renaissance Technologies+4,800$23K
Trimmed1
- AQR Capital Management−117,446$552K
Exited0
—
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2022Q4 | 3 | $1.8M |
| 2023Q1 | 3 | $1.1M |
| 2023Q2 | 1 | $9.3M |
| 2023Q3 | 5 | $15.3M |
| 2023Q4 | 8 | $18.5M |
| 2024Q1 | 8 | $22.2M |
| 2024Q2 | 8 | $29.7M |
| 2024Q3 | 7 | $5.2M |
| 2024Q4 | 6 | $6.8M |
| 2025Q1 | 7 | $5.1M |
| 2025Q2 | 6 | $7.4M |
| 2025Q3 | 5 | $10.5M |
| 2025Q4 | 6 | $10.1M |
Who owns GRNT
6 super-investors · 2025Q4
Tracked stake
2.18M
shares
Combined value
$10M
% of shares outstanding
—
shares-out unknown
Quarter action mix
New1Added3Trim1Held1
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | AQR Capital Management | 1.03M | $5M |
| 2 | Izzy Englander Millennium Mgmt | 648.9K | $3M |
| 3 | Two Sigma Investments | 315.0K | $1M |
| 4 | Ken Griffin Citadel Advisors | 129.4K | $608K |
| 5 | Renaissance Technologies | 22.9K | $108K |
| 6 | T. Rowe Price | 28.9K | $137 |
Recent moves
20 transactions
- +192,837 · 2025Q4
- +5,501 · 2025Q4
- −117,446 · 2025Q4
- +129,370 · 2025Q4
- +4,800 · 2025Q4
- +218,802 · 2025Q3
- −118,325 · 2025Q3
- +834,717 · 2025Q3
- +2,355 · 2025Q3
- −19,800 · 2025Q3
- +2,601 · 2025Q2
- +88,028 · 2025Q2
- −9,053 · 2025Q2
- +93,433 · 2025Q2
- +37,900 · 2025Q2
- −337,803 · 2025Q1
- +117,173 · 2025Q1
- −304 · 2025Q1
- +4,382 · 2025Q1
- +471,474 · 2024Q4
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