Ticker · CUSIP 37148K100
Holders (tracked)
7
Combined shares
12,582,407
Combined value
$4.03M
Last close
—
Quarter
2025Q2
Tracked holders · last 8 quarters
Flat over the last 8 quarters.
SEC event timeline
5 events
- Izzy Englander (Millennium Mgmt) exited2025-11-14−1,061,606 shares · 2025Q3Position
- Two Sigma Investments exited2025-11-14−105,961 shares · 2025Q3Position
- T. Rowe Price exited2025-11-14−8,462,611 shares · 2025Q3Position
- AQR Capital Management exited2025-11-14−63,689 shares · 2025Q3Position
- Renaissance Technologies exited2025-11-13−2,580,780 shares · 2025Q3Position
Insider activity
No insider transactions in the last 30 days.
Who moved on this name in 2025Q2
Position changes reported for the latest quarter, grouped by direction.
New positions1
- Izzy Englander (Millennium Mgmt)+1,061,606$340K
Added to2
- Renaissance Technologies+700,110$224K
- Two Sigma Investments+413$132
Trimmed2
- AQR Capital Management−25,325$8K
- T. Rowe Price−599,228$192
Exited0
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Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2021Q3 | 3 | $294.9M |
| 2021Q4 | 7 | $69.9M |
| 2022Q1 | 7 | $91.2M |
| 2022Q2 | 8 | $85.7M |
| 2022Q3 | 9 | $61.8M |
| 2022Q4 | 8 | $45.1M |
| 2023Q1 | 8 | $49.6M |
| 2023Q2 | 9 | $63.2M |
| 2023Q3 | 8 | $42.4M |
| 2023Q4 | 7 | $19.8M |
| 2024Q1 | 7 | $53.7M |
| 2024Q2 | 10 | $40.7M |
| 2024Q3 | 4 | $26.1M |
| 2024Q4 | 8 | $11.6M |
| 2025Q1 | 7 | $4.6M |
| 2025Q2 | 7 | $4.0M |
Who owns GBIOGBX
7 super-investors · 2025Q2
Tracked stake
12.58M
shares
Combined value
$4M
% of shares outstanding
—
shares-out unknown
Quarter action mix
New1Added2Trim2Held2
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | T. Rowe Price | 8.46M | $3M |
| 2 | Renaissance Technologies | 2.58M | $826K |
| 3 | Izzy Englander Millennium Mgmt | 1.06M | $340K |
| 4 | Ken Griffin Citadel Advisors | 192.2K | $62K |
| 5 | Ken Griffin Citadel Advisors | 115.6K | $37K |
| 6 | Two Sigma Investments | 106.0K | $34K |
| 7 | AQR Capital Management | 63.7K | $20K |
Recent moves
20 transactions
- −1,061,606 · 2025Q3
- SOLDT. Rowe Price−8,462,611 · 2025Q3
- −105,961 · 2025Q3
- −63,689 · 2025Q3
- −2,580,780 · 2025Q3
- +413 · 2025Q2
- +1,061,606 · 2025Q2
- −25,325 · 2025Q2
- TRIMT. Rowe Price−599,228 · 2025Q2
- +700,110 · 2025Q2
- SOLDD.E. Shaw & Co.−344,922 · 2025Q1
- −91,578 · 2025Q1
- −14,855 · 2025Q1
- +89,014 · 2025Q1
- TRIMT. Rowe Price−217,220 · 2025Q1
- +917,711 · 2025Q1
- −29,496 · 2024Q4
- TRIMD.E. Shaw & Co.−143,227 · 2024Q4
- TRIMT. Rowe Price−72,531 · 2024Q4
- +91,578 · 2024Q4
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