BIIB (Biogen Inc. Common Stock)
Expected Move & Straddle Price History
The expected move for BIIB 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 BIIB Expected Move
30-Day Straddle
$15.95
7-Day Straddle
$7.70
Avg IV
0.5%
IV Rank
22%
Implied one-standard-deviation move through the next 30 days. Compare to BIIB'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.
BIIB Straddle Price — Last 60 Days
| Date | 30D Straddle | 7D Straddle | Avg IV | IV Rank |
|---|---|---|---|---|
| 20260911 | $15.95 | $7.70 | 0.5% | 22% |
| 20260910 | $16.15 | $8.62 | 0.5% | 30% |
| 20260909 | $15.70 | $9.28 | 0.5% | 26% |
| 20260908 | $16.40 | $9.95 | 0.5% | 22% |
| 20260904 | $15.60 | $5.57 | 0.5% | 21% |
| 20260903 | $15.65 | $6.55 | 0.4% | 4% |
| 20260902 | $16.70 | $9.55 | 0.4% | 19% |
| 20260901 | $15.80 | $9.12 | 0.4% | 17% |
| 20260831 | $16.40 | $5.85 | 0.5% | 21% |
| 20260828 | $14.80 | $6.90 | 0.4% | 18% |
| 20260827 | $15.95 | $8.43 | 0.4% | 1% |
| 20260826 | $16.05 | $9.93 | 0.5% | 23% |
| 20260825 | $16.15 | $8.90 | 0.5% | 24% |
| 20260824 | $16.10 | $6.28 | 0.4% | 18% |
| 20260821 | $15.15 | $8.00 | 0.8% | 98% |
| 20260820 | $16.55 | $9.25 | 0.8% | 100% |
| 20260819 | $16.15 | $8.52 | 0.5% | 38% |
| 20260818 | $15.70 | $9.85 | 0.7% | 100% |
| 20260817 | $16.15 | $5.35 | 0.7% | 95% |
| 20260814 | $14.60 | $7.12 | 0.4% | 0% |
| 20260813 | $14.80 | $7.83 | 0.5% | 31% |
| 20260812 | $15.55 | $7.05 | 0.4% | 0% |
| 20260811 | $15.35 | $9.05 | 0.5% | 25% |
| 20260810 | $16.35 | $6.53 | 0.5% | 31% |
| 20260806 | $17.00 | $9.85 | 0.5% | 40% |
| 20260805 | $16.95 | $8.25 | 0.5% | 36% |
| 20260804 | $18.20 | $10.68 | 0.5% | 35% |
| 20260803 | $17.40 | $7.03 | 0.5% | 28% |
| 20260731 | $16.15 | $6.95 | 0.5% | 43% |
| 20260730 | $16.75 | $7.88 | 0.5% | 33% |
| 20260729 | $16.95 | $10.18 | 0.5% | 35% |
| 20260728 | $19.35 | $12.80 | 0.6% | 48% |
| 20260727 | $18.35 | $10.85 | 0.5% | 36% |
| 20260724 | $18.90 | $12.65 | 0.5% | 36% |
| 20260723 | $19.30 | $14.45 | 0.5% | 35% |
| 20260722 | $18.50 | $12.35 | 0.5% | 32% |
| 20260721 | $20.25 | $15.10 | 0.5% | 31% |
| 20260720 | $20.75 | $6.22 | 0.5% | 34% |
| 20260716 | $19.50 | $8.45 | 0.4% | 14% |
| 20260715 | $18.15 | $8.80 | 0.5% | 28% |
| 20260714 | $18.25 | $10.15 | 0.5% | 34% |
| 20260713 | $21.80 | $10.45 | 0.5% | 34% |
| 20260710 | $18.70 | $9.75 | 0.5% | 39% |
| 20260709 | $21.10 | $12.90 | 0.5% | 40% |
| 20260708 | $21.05 | $13.20 | 0.5% | 41% |
| 20260707 | $21.10 | $12.50 | 0.6% | 45% |
| 20260706 | $22.00 | $7.00 | 0.6% | 46% |
| 20260702 | $20.65 | $8.00 | 0.6% | 51% |
| 20260701 | $19.70 | $8.40 | 0.5% | 44% |
| 20260630 | $21.50 | $9.72 | 0.6% | 53% |
| 20260629 | $22.25 | $6.12 | 0.6% | 50% |
| 20260626 | $19.55 | $7.10 | 0.4% | 27% |
| 20260625 | $17.95 | $7.83 | 0.5% | 31% |
| 20260624 | $17.30 | $8.35 | 0.5% | 35% |
| 20260623 | $16.15 | $7.80 | 0.5% | 28% |
| 20260622 | $17.50 | $4.97 | 0.5% | 29% |
| 20260618 | $16.00 | $6.92 | 0.7% | 56% |
| 20260617 | $16.10 | $7.97 | 0.6% | 44% |
| 20260616 | $16.30 | $8.68 | 0.7% | 57% |
| 20260615 | $16.45 | $5.43 | 0.6% | 54% |