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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 · ATRO

As of 2026-08-20
Put/Call Volume Ratio
0.66
Call-dominant · bullish sentiment
Put/Call OI Ratio
0.46
Cumulative positioning sentiment
Front-month ATM Implied Volatility
61.0%
Market-expected move
Contracts / Expirations
51
3 expirations
CallStrikePut
OIVolIVBidAskStrikeBidAskIVVolOI
20131.2%34.7038.3040.00–––––
–––––50.000.001.3555.1%06
1082.5%19.9023.6055.000.002.1543.4%025
3078.6%15.6019.0060.000.200.7562.0%042
–––––65.000.401.5558.1%030
12067.8%7.6010.9070.001.202.7053.2%316
59161.0%4.007.7075.002.206.3057.1%142
234460.0%2.854.3080.005.909.0062.0%123
45663.9%2.102.7085.009.4012.3060.0%131
171264.9%1.001.9590.0013.4016.5061.0%06
23129.8%0.002.6095.0017.9019.7042.5%05
58035.6%0.000.75100.0022.2025.2043.4%01
15041.5%0.002.00105.00–––––
17046.4%0.001.75110.0031.9035.7066.9%01
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.