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EOD US-equity data for investors and AI agents

Data is end-of-day, not real-time, and not investment advice

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Options · CSTL

As of 2026-08-20
Put/Call Volume Ratio
1.50
Put-dominant · hedging/bearish
Put/Call OI Ratio
0.12
Cumulative positioning sentiment
Front-month ATM Implied Volatility
51.2%
Market-expected move
Contracts / Expirations
27
3 expirations
CallStrikePut
OIVolIVBidAskStrikeBidAskIVVolOI
20107.8%11.8014.5020.00–––––
1185.4%9.4011.9022.50–––––
1093.2%7.609.5025.000.001.0041.5%04
2058.1%2.405.4030.000.003.0016.1%01
4051.2%0.601.6535.00–––––
Click a call or put in the chain to see its history.

Source: Alpha Vantage options chain EOD (incl. greeks / IV / open interest). Contracts with low liquidity, far expirations (>180 days), and deep out-of-the-money strikes (±50%) are filtered out. P/C ratios are aggregated across the full chain.