Put-Call Ratio (Volume) (20-Day)

Put-Call Ratio (Volume): The ratio of puts traded to calls traded, for options with the relevant expiration date.

American Superconductor Corporation (AMSC) had 20-Day Put-Call Ratio (Volume) of 0.7447 for 2026-10-16.

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Figures for 2026-10-16

Volatility Metrics
Historical Volatility (Close-to-Close)	0.6422
Historical Volatility (Parkinson)	0.5647
Implied Volatility (Calls)	0.8158
Implied Volatility (Puts)	0.8244
Implied Volatility (Mean)	0.8201
Put-Call Implied Volatility Ratio	1.0106
Implied Volatility Skew	0.0177
Option Statistics
Put-Call Ratio (Volume)	0.7447
Put-Call Ratio (Open Interest)	0.9639