# Optionistics > Options analytics for US stocks, ETFs and indexes since 2005: end-of-day option chains with Greeks, implied volatility, max pain (Strike Pegger), put/call ratios, option strategy screeners, profit/loss and probability calculators, and historical option data back to 2008. Data is end-of-day. Option chains, quotes, the Strike Pegger and price history show the latest session to everyone; screeners and reports are delayed 15 trading days without a subscription. The Historical Data plan adds downloads of option chains back to 2008. The links below are Markdown versions of the pages: any quote, chain, screener or Learning Center page URL plus `.md` (for example https://www.optionistics.com/quotes/stock-option-chains/AAPL.md), with the same query parameters as the page. ## Quotes and charts - [Option Chains](https://www.optionistics.com/quotes/stock-option-chains/SPY.md): calls and puts by expiration with bid/ask, volume, open interest, IV and Greeks - [Stock Quotes](https://www.optionistics.com/quotes/stock-quotes/SPY.md): quote with implied and historical volatility, and the best strategy candidates - [Option Price History](https://www.optionistics.com/quotes/option-prices.md): daily price, volume, open interest, IV and Greeks of one option contract - [Strike Pegger (Max Pain)](https://www.optionistics.com/quotes/strike-pegger/SPY.md): the strike where option writers lose least at expiration - [Volatility Skew](https://www.optionistics.com/screener/volatility-skew/SPY.md): implied volatility by strike and by expiration - [Put/Call Ratio](https://www.optionistics.com/screener/put-call-ratio/SPY.md): put/call open interest and volume ratios over time - [Stock Prices](https://www.optionistics.com/quotes/stock-prices/SPY.md): price and volume history - [10 Day Snapshot](https://www.optionistics.com/snapshot.md?symbol=SPY) - [Symbol Lookup](https://www.optionistics.com/symbol-lookup.md?q=apple): find a ticker by company name - [Site Search](https://www.optionistics.com/search.md?q=max%20pain): search the tools, Learning Center and symbols ## Screeners and reports - [Morning Hotsheet](https://www.optionistics.com/screener/hotsheet.md): the day in options on one page - [Covered Calls](https://www.optionistics.com/screener/covered-calls.md) - [Covered Puts](https://www.optionistics.com/screener/covered-puts.md) - [Cheap Calls](https://www.optionistics.com/screener/cheap-calls.md) - [Cheap Puts](https://www.optionistics.com/screener/cheap-puts.md) - [Straddles](https://www.optionistics.com/screener/straddles.md) - [Long Straddles](https://www.optionistics.com/screener/long-straddles.md) - [Strangles](https://www.optionistics.com/screener/strangles.md) - [Long Strangles](https://www.optionistics.com/screener/long-strangles.md) - [Bull Call Spreads](https://www.optionistics.com/screener/bull-call-spreads.md) - [Bear Call Spreads](https://www.optionistics.com/screener/bear-call-spreads.md) - [Bull Put Spreads](https://www.optionistics.com/screener/bull-put-spreads.md) - [Bear Put Spreads](https://www.optionistics.com/screener/bear-put-spreads.md) - [Calendar Call Spreads](https://www.optionistics.com/screener/calendar-call-spreads.md) - [Calendar Put Spreads](https://www.optionistics.com/screener/calendar-put-spreads.md) - [Diagonal Call Spreads](https://www.optionistics.com/screener/diagonal-call-spreads.md) - [Diagonal Put Spreads](https://www.optionistics.com/screener/diagonal-put-spreads.md) - [Most Volatile Stocks](https://www.optionistics.com/screener/volatility/most-volatile-stocks.md) - [Least Volatile Stocks](https://www.optionistics.com/screener/volatility/least-volatile-stocks.md) - [Most Volatile Options](https://www.optionistics.com/screener/volatility/volatile-options.md) - [Implied Volatility Change by Stock](https://www.optionistics.com/screener/volatility/implied-volatility-change.md) - [Implied Volatility Increase by Stock](https://www.optionistics.com/screener/volatility/implied-volatility-increase.md) - [Implied Volatility Decrease by Stock](https://www.optionistics.com/screener/volatility/implied-volatility-decrease.md) - [Sudden Rise in IV](https://www.optionistics.com/screener/volatility/implied-volatility-rise.md) - [Sudden Drop in IV](https://www.optionistics.com/screener/volatility/implied-volatility-drop.md) - [Implied Volatility / Historical Volatility](https://www.optionistics.com/screener/volatility/iv-hv-ratio.md) - [Historical Volatility / Implied Volatility](https://www.optionistics.com/screener/volatility/hv-iv-ratio.md) - [Volatility Skew Screener](https://www.optionistics.com/screener/volatility-skew.md) - [Advanced (4-leg) Screener](https://www.optionistics.com/screener/advanced.md): iron condors, butterflies, double diagonals - [Option Volume](https://www.optionistics.com/screener/option-volume.md): unusual option volume against the 10-day average - [Open Interest](https://www.optionistics.com/screener/open-interest-highest-contract.md) - [52 Week High/Low IV](https://www.optionistics.com/screener/annual-high-low.md) - [Stock Trade Finder](https://www.optionistics.com/screener/stock-trade-finder/SPY.md) ## Calculators - [Options Profit Calculator](https://www.optionistics.com/calculators/stock-option-calculator/SPY.md): up to 8 option legs plus stock, P/L today and at expiration - [Probability Calculator](https://www.optionistics.com/calculators/probability-calculator.md): the chance a stock ends above, below or between prices - [Auto Lease Calculator](https://www.optionistics.com/calculators/auto-lease-calculator.md) ## Learning Center - [Tutorial](https://www.optionistics.com/tutorial.md): five chapters, from what an option is to complex strategies - [Articles](https://www.optionistics.com/articles.md): essays on options strategy - [Glossary](https://www.optionistics.com/glossary.md): definitions of options terms - [Help](https://www.optionistics.com/help.md): how to use each tool - [FAQ](https://www.optionistics.com/faq.md): the site, the data and subscriptions - [How to use this site](https://www.optionistics.com/how-to-use.md): a tour of the tools ## Plans and data - [Plans and pricing](https://www.optionistics.com/subscribe.md): Free, Standard and Historical Data plans with prices - [Download historical data](https://www.optionistics.com/download): option chains and prices back to 2008 (Historical Data plan) ## Optional - [About](https://www.optionistics.com/about.md): the company - [Data Accuracy](https://www.optionistics.com/data-accuracy.md): where the data comes from - [Data Frequency](https://www.optionistics.com/data-frequency.md): when the data updates - [Disclaimer](https://www.optionistics.com/disclaimer.md): not investment advice - [Data Notices](https://www.optionistics.com/notices.md): data corrections and outages - [Contact](https://www.optionistics.com/contact.md)