GBIO (Generation Bio Co. Common Stock)
Historical IV Rank & Volatility Regime
IV Rank measures where GBIO's current 30-day implied volatility sits in its trailing 90-day distribution (0% = lowest in 90 days, 100% = highest). It's the most reliable signal for whether options on GBIO are priced rich or cheap relative to its own recent regime.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.
GBIO IV Rank Summary
Current
0%
Compressed — premium buying regime
30-Day Avg
50%
60-Day Avg
46%
90-Day Avg
49%
90-Day Low
0%
90-Day High
100%
IV Rank is bounded 0%–100% by construction. Sustained levels above 75% historically
precede mean reversion in GBIO's implied vol; sustained sub-25% readings
often coincide with low-realized regimes ahead of catalyst events. See the
Vol Arb Screener for symbols where current IV
rank diverges most from realized volatility.
GBIO IV Rank — Last 90 Trading Days
| Date | IV Rank | Avg IV |
|---|---|---|
| 20260116 | 0% | 0.0% |
| 20260115 | 0% | 0.0% |
| 20260114 | 0% | 0.0% |
| 20260113 | 0% | 0.0% |
| 20260112 | 0% | 0.0% |
| 20260109 | 0% | 0.0% |
| 20260108 | 35% | 6.4% |
| 20260107 | 33% | 6.0% |
| 20260106 | 32% | 5.7% |
| 20260105 | 66% | 11.9% |
| 20260102 | 88% | 16.0% |
| 20251231 | 83% | 15.1% |
| 20251230 | 81% | 14.6% |
| 20251229 | 79% | 14.2% |
| 20251226 | 73% | 13.1% |
| 20251224 | 72% | 13.0% |
| 20251223 | 68% | 12.3% |
| 20251222 | 69% | 12.5% |
| 20251219 | 65% | 11.8% |
| 20251218 | 64% | 11.6% |
| 20251217 | 63% | 11.4% |
| 20251216 | 63% | 11.3% |
| 20251215 | 61% | 11.0% |
| 20251212 | 59% | 10.6% |
| 20251211 | 56% | 10.1% |
| 20251210 | 57% | 10.3% |
| 20251209 | 56% | 10.1% |
| 20251208 | 55% | 10.0% |
| 20251205 | 54% | 9.7% |
| 20251204 | 52% | 9.5% |
| 20251203 | 53% | 9.5% |
| 20251202 | 52% | 9.3% |
| 20251201 | 51% | 9.2% |
| 20251128 | 50% | 9.0% |
| 20251126 | 49% | 8.9% |
| 20251125 | 48% | 8.7% |
| 20251124 | 48% | 8.7% |
| 20251121 | 46% | 8.4% |
| 20251120 | 46% | 8.3% |
| 20251119 | 45% | 8.2% |
| 20251118 | 45% | 8.2% |
| 20251117 | 45% | 8.1% |
| 20251114 | 42% | 7.6% |
| 20251113 | 42% | 7.6% |
| 20251112 | 41% | 7.5% |
| 20251111 | 42% | 7.5% |
| 20251110 | 43% | 7.8% |
| 20251107 | 42% | 7.6% |
| 20251106 | 41% | 7.4% |
| 20251105 | 41% | 7.4% |
| 20251104 | 41% | 7.4% |
| 20251103 | 40% | 7.3% |
| 20251031 | 38% | 6.9% |
| 20251030 | 38% | 6.9% |
| 20251029 | 38% | 6.8% |
| 20251028 | 38% | 6.8% |
| 20251027 | 38% | 6.8% |
| 20251024 | 37% | 6.7% |
| 20251023 | 37% | 6.7% |
| 20251022 | 37% | 6.6% |
| 20251021 | 36% | 6.6% |
| 20251020 | 36% | 6.5% |
| 20251017 | 0% | 0.0% |
| 20251016 | 0% | 0.0% |
| 20251015 | 0% | 0.0% |
| 20251014 | 0% | 0.0% |
| 20251013 | 0% | 0.0% |
| 20251010 | 0% | 0.0% |
| 20251009 | 34% | 6.2% |
| 20251008 | 33% | 6.0% |
| 20251007 | 67% | 12.2% |
| 20251006 | 100% | 18.1% |
| 20251003 | 95% | 16.2% |
| 20251002 | 90% | 15.6% |
| 20251001 | 87% | 15.1% |
| 20250930 | 84% | 14.7% |
| 20250929 | 81% | 14.0% |
| 20250926 | 77% | 13.3% |
| 20250925 | 74% | 12.9% |
| 20250924 | 73% | 12.6% |
| 20250923 | 71% | 12.2% |
| 20250922 | 70% | 12.1% |
| 20250919 | 65% | 11.3% |
| 20250918 | 65% | 11.2% |
| 20250917 | 63% | 11.0% |
| 20250916 | 63% | 11.0% |
| 20250915 | 61% | 10.6% |
| 20250912 | 59% | 10.2% |
| 20250911 | 58% | 10.1% |
| 20250910 | 57% | 10.0% |