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
$17.40
7-Day Straddle
$10.40
Avg IV
0.5%
IV Rank
49%
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 |
|---|---|---|---|---|
| 20260729 | $17.40 | $10.40 | 0.5% | 49% |
| 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% |
| 20260613 | $12.55 | $5.55 | 0.5% | 29% |
| 20260612 | $12.20 | $5.75 | 0.5% | 26% |
| 20260611 | $14.70 | $6.83 | 0.6% | 42% |
| 20260610 | $15.50 | $8.70 | 0.5% | 24% |
| 20260609 | $15.00 | $9.55 | 0.4% | 24% |
| 20260608 | $15.55 | $5.65 | 0.5% | 28% |
| 20260605 | $13.95 | $7.40 | 0.5% | 32% |
| 20260604 | $14.45 | $7.35 | 0.5% | 34% |
| 20260603 | $14.55 | $8.30 | 0.5% | 31% |
| 20260602 | $14.15 | $8.85 | 0.4% | 13% |
| 20260601 | $15.25 | $5.25 | 0.5% | 26% |
| 20260529 | $14.30 | $6.62 | 0.5% | 32% |
| 20260528 | $14.00 | $6.80 | 0.5% | 37% |
| 20260527 | $14.35 | $7.78 | 0.5% | 37% |
| 20260526 | $15.10 | $7.72 | 0.5% | 34% |
| 20260522 | $12.40 | $5.45 | 0.7% | 58% |
| 20260521 | $13.35 | $6.65 | 0.7% | 61% |
| 20260520 | $13.55 | $7.30 | 0.6% | 45% |
| 20260519 | $14.35 | $8.05 | 0.6% | 53% |
| 20260518 | $15.20 | $6.07 | 0.6% | 46% |
| 20260515 | $13.60 | $5.92 | 0.4% | 18% |
| 20260514 | $13.80 | $6.65 | 0.5% | 33% |
| 20260513 | $16.65 | $9.05 | 0.5% | 36% |
| 20260512 | $15.20 | $8.35 | 0.5% | 37% |
| 20260511 | $15.40 | $5.67 | 0.6% | 47% |
| 20260510 | $16.00 | $6.55 | 0.4% | 22% |
| 20260508 | $14.10 | $7.07 | 0.5% | 32% |
| 20260507 | $13.75 | $6.83 | 0.5% | 39% |
| 20260506 | $14.10 | $6.47 | 0.5% | 39% |
| 20260505 | $15.05 | $8.10 | 0.4% | 22% |