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Biogen Inc BIIB 216.0 -3.05 -1.39%

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ATM IV
0.299
Put Call Ratio (OI)
0.793
Put Call Ratio (Vol)
1.05
IV Rank
10.2
IV Percentile
1.98
Max Pain
213

Delta exposure (2026-09-18)

Delta approximates how many cents the option moves for a $1 move in the underlying.

A 0.50 call gains ~$0.50 if the stock goes up $1. Delta also approximates the option's probability of finishing in the money.

DTE \text{DTE}
0.0
854.0
| Δ | |\Delta|
0.00
1.00
Moneyness Moneyness
-157.3
157.3