GBIO (Generation Bio Co. Common Stock)
Expected Move & Straddle Price History
The expected move for GBIO is derived from at-the-money straddle pricing — the market's implied one-standard-deviation move through the next 30 days. Comparing it to realized moves reveals when options are pricing in too much (premium-selling regime) vs too little (premium-buying 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.
Current GBIO Expected Move
30-Day Straddle
$4.65
7-Day Straddle
$4.65
Avg IV
0.0%
IV Rank
0%
Implied one-standard-deviation move through the next 30 days. Compare to GBIO's realized
move over the same window to gauge whether options are pricing in too much (premium-selling regime)
or too little (premium-buying regime). The
Expected Move Tracker ranks every symbol by
this measure.
GBIO Straddle Price — Last 60 Days
| Date | 30D Straddle | 7D Straddle | Avg IV | IV Rank |
|---|---|---|---|---|
| 20260116 | $4.65 | $4.65 | 0.0% | 0% |
| 20260115 | $5.48 | $5.48 | 0.0% | 0% |
| 20260114 | $4.65 | $4.65 | 0.0% | 0% |
| 20260113 | $4.65 | $4.65 | 0.0% | 0% |
| 20260112 | $4.65 | $4.65 | 0.0% | 0% |
| 20260109 | $4.75 | $4.75 | 0.0% | 0% |
| 20260108 | $4.75 | $4.75 | 6.4% | 35% |
| 20260107 | $4.75 | $4.75 | 6.0% | 33% |
| 20260106 | $4.75 | $4.75 | 5.7% | 32% |
| 20260105 | $4.75 | $4.75 | 11.9% | 66% |
| 20260102 | $4.65 | $4.65 | 16.0% | 88% |
| 20251231 | $4.65 | $4.65 | 15.1% | 83% |
| 20251230 | $4.65 | $4.65 | 14.6% | 81% |
| 20251229 | $4.58 | $4.58 | 14.2% | 79% |
| 20251226 | $4.65 | $4.65 | 13.1% | 73% |
| 20251224 | $4.75 | $4.75 | 13.0% | 72% |
| 20251223 | $4.65 | $4.65 | 12.3% | 68% |
| 20251222 | $4.75 | $4.75 | 12.5% | 69% |
| 20251219 | $4.75 | $4.75 | 11.8% | 65% |
| 20251218 | $4.75 | $4.75 | 11.6% | 64% |
| 20251217 | $4.75 | $4.75 | 11.4% | 63% |
| 20251216 | $4.75 | $4.75 | 11.3% | 63% |
| 20251215 | $4.75 | $4.75 | 11.0% | 61% |
| 20251212 | $4.75 | $4.75 | 10.6% | 59% |
| 20251211 | $4.78 | $4.78 | 10.1% | 56% |
| 20251210 | $4.75 | $4.75 | 10.3% | 57% |
| 20251209 | $4.75 | $4.75 | 10.1% | 56% |
| 20251208 | $4.75 | $4.75 | 10.0% | 55% |
| 20251205 | $4.75 | $4.75 | 9.7% | 54% |
| 20251204 | $4.88 | $4.88 | 9.5% | 52% |
| 20251203 | $4.75 | $4.75 | 9.5% | 53% |
| 20251202 | $4.75 | $4.75 | 9.3% | 52% |
| 20251201 | $4.75 | $4.75 | 9.2% | 51% |
| 20251128 | $4.75 | $4.75 | 9.0% | 50% |
| 20251126 | $5.70 | $5.70 | 8.9% | 49% |
| 20251125 | $4.75 | $4.75 | 8.7% | 48% |
| 20251124 | $4.75 | $4.75 | 8.7% | 48% |
| 20251121 | $4.75 | $4.75 | 8.4% | 46% |
| 20251120 | $4.58 | $4.58 | 8.3% | 46% |
| 20251119 | $4.75 | $4.75 | 8.2% | 45% |
| 20251118 | $4.75 | $4.75 | 8.2% | 45% |
| 20251117 | $4.75 | $4.75 | 8.1% | 45% |
| 20251114 | $4.65 | $4.65 | 7.6% | 42% |
| 20251113 | $4.65 | $4.65 | 7.6% | 42% |
| 20251112 | $4.65 | $4.65 | 7.5% | 41% |
| 20251111 | $4.65 | $4.65 | 7.5% | 42% |
| 20251110 | $4.75 | $4.75 | 7.8% | 43% |
| 20251107 | $5.75 | $5.75 | 7.6% | 42% |
| 20251106 | $4.75 | $4.75 | 7.4% | 41% |
| 20251105 | $4.75 | $4.75 | 7.4% | 41% |
| 20251104 | $4.75 | $4.75 | 7.4% | 41% |
| 20251103 | $4.75 | $4.75 | 7.3% | 40% |
| 20251031 | $4.65 | $4.65 | 6.9% | 38% |
| 20251030 | $4.65 | $4.65 | 6.9% | 38% |
| 20251029 | $4.65 | $4.65 | 6.8% | 38% |
| 20251028 | $4.65 | $4.65 | 6.8% | 38% |
| 20251027 | $4.65 | $4.65 | 6.8% | 38% |
| 20251024 | $4.65 | $4.65 | 6.7% | 37% |
| 20251023 | $4.43 | $4.43 | 6.7% | 37% |
| 20251022 | $7.15 | $7.15 | 6.6% | 37% |