Put-Call Ratio (Open Interest) (20-Day)
Put-Call Ratio (Open Interest): The ratio of outstanding put contracts to outstanding call contracts at the close of the trading day, for options with the relevant expiration date.
ProShares UltraShort S&P500 (SDS) had 20-Day Put-Call Ratio (Open Interest) of 0.1232 for 2026-10-19.
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