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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 · NWN

As of 2026-08-20
Put/Call Volume Ratio
0.50
Call-dominant · bullish sentiment
Put/Call OI Ratio
0.28
Cumulative positioning sentiment
Front-month ATM Implied Volatility
23.9%
Market-expected move
Contracts / Expirations
17
2 expirations
CallStrikePut
OIVolIVBidAskStrikeBidAskIVVolOI
–––––35.000.002.1551.2%03
–––––40.000.002.1534.7%031
52035.6%4.407.6045.000.000.5519.0%017
41023.9%0.153.4050.000.002.853.4%027
46013.2%0.001.2555.00–––––
12024.9%0.000.1560.00–––––
13034.7%0.002.1565.00–––––
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.