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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 · WLK

As of 2026-08-20
Put/Call Volume Ratio
0.02
Call-dominant · bullish sentiment
Put/Call OI Ratio
0.49
Cumulative positioning sentiment
Front-month ATM Implied Volatility
44.4%
Market-expected move
Contracts / Expirations
68
4 expirations
CallStrikePut
OIVolIVBidAskStrikeBidAskIVVolOI
–––––50.000.001.3559.0%01
–––––55.000.001.3548.3%01
–––––60.000.001.2037.6%01
2101.5%11.8016.0065.000.001.0027.8%01
7131.7%9.009.6070.000.003.8018.1%02
–––––75.000.004.408.3%012
107039.5%2.403.8080.004.004.8044.4%010
109134.7%0.251.8585.00–––––
18019.0%0.001.4090.00–––––
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.