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.
Vanguard 500 Index Fund ETF Shares (VOO) had 20-Day Put-Call Ratio (Open Interest) of 0.6716 for 2026-03-13.
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