The Exchange Traded Funds that replicate a target index's performance (e.g., S&P 500 or commodities, foreign markets, etc). ETFs trade like stock, have lower fees than mutual funds, and many have tradable options.
The underlying of an option contract is a stock, ETF, or index that the option contract trades against. The price movement and volatility of the underlying affects the pricing of the option throughout its life span.
Market Capitalization, also called 'Market Cap' for short, is the total value of outstanding shares for the Underlying. Market Cap describes the value of the company or the size of an ETF's assets under management.
The Call Volume All Strikes is the sum of all call options volume across all available strikes and expiration dates. Volume is the number of contracts for a specific strike and expiration that traded hands.
The Put Volume All Strikes criterion is the sum of all put options volume across all available strikes and expiration dates. Volume is the number of contracts for a specific strike and expiration that traded hands.
The underlying mid-price is the price between the bid and ask prices currently on offer for the stock or ETF. This is a good target for a limit price placed in any order that involves the underlying stock.