Related terminology within the Options Screener

Consolidated options data

• 30D Implied Volatility

The average implied volatility of the nearest monthly options contract that is 30 days out or more. Implied Volatility is the market's forecast of the likely movement in a security's price over the next 30 days.

• Historical Volatility:

The average deviation from the average price over the past 20 trading days, a backward-looking measure of volatility based on the past price movements of the security.

• IV Percentile:

The percentage of days with IV closing below the current IV value over the last 52-week period.

• Total Option Volume:

The total number of option contracts bought and sold during the current session across all strikes and expiration under the specified symbol.

• Options Average Volume:

The average daily volume for all option contracts for the last 30 days.

• Options Relative Volume:

The ratio of the current total options volume under a symbol to the arithmetic mean of daily volume over the last 30 days.

• Total Open Interest:

The total number of open option contracts.

• Options Average OI:

The average daily total open interest for all option contracts for the last 30 days.

Option contract type and quotes

• Side

You can screen for calls, puts, or both.

• Days to Expiration

The number of days until the contract expires.

• Expiration Type

You can screen out different types of expiration frequencies: weekly, monthly, or quarterly.

• Deliverables

You can screen between standard options or non-standard options.

• Bid

The highest price a buyer is willing to pay for the option contract currently.

• Ask

The lowest price that a seller is willing to offer currently.

• Last Price

The most recent price at which the option contract was traded.

• Volume

The number of contracts is traded during the current session.

• Open Interest

The number of outstanding or open option contracts that have not been closed or exercised.

The Greeks and probability analysis

• Delta

Measures the rate of change of its theoretical value with respect to a change in the price of the underlying stock by $1.

• Gamma

Measures the rate of change in the option’s delta with respect to an incremental change in the price of the underlying asset.

• Theta

Measures the sensitivity of its value to the passage of time, which is usually expressed in one-day increments.

• Vega

Measures an option position’s sensitivity to movements in implied volatility.

• Rho

Measures an option’s sensitivity to the risk-free interest rate.

• Implied Volatility

A measure of the market's expectation of future volatility of the underlying asset, as implied by the prices of the options. It reflects the level of uncertainty or risk that market participants assign to an asset's price movement over a specific period.

• Exercise Probability

Also referred to as Probability of ITM, is the probability the underlying expires below a put’s strike price or above a call’s strike price.

Please note, he probability of ITM (ln the Money) refers to the likelihood that the underlying security’s market price will be higher (or lower) than the strike price on its expiration for call (or put) options. The calculation of ITM probability is based on the probability distribution of the stock's market price. It represents a theoretical value for reference only and does not guarantee the probability or event of an option actually becoming ITM. Please Click Here to learn about the algorithm of this indicator.

• Leverage Ratio

Measures the percentage change in the option price for a 1% change in the price of the underlying asset, also known as Lamba Greek. A higher leverage ratio indicates that the option's price is more sensitive to changes in the underlying asset's price.

All data and indicators displayed in this tool are intended for personal reference only. They are not, and should not be construed as, investment advice or recommendations to trade.

The probability of ITM display is not guaranteed and only an calculation using a set of assumptions. This tool is not designed to produce definite returns for your investments and will not guarantee profits or returns. The information supplied by this tool is subject to error and only gives investors a general estimate of possible outcomes. Details rendered by this tool may not be exact or act as an accurate representation of the potential gains or losses made from your investments.

Webull Financial is not liable for miscalculations or inaccuracies, including computational or human-made oversights and errors, contrived as a result of using the probability of ITM display. Additionally, Webull and its affiliates are not responsible for measures taken based upon these calculations. The ITM probability display does not constitute investment advice; it is heavily encouraged that all financial objectives and risks are carefully considered before investing in options.

Option trading entails significant risk and is not appropriate for all investors. Option investors can rapidly lose the entire value of their investment in a short period of time and incur permanent loss by expiration date. You need to complete an options trading application and get approval on eligible accounts. Please read the Characteristics and Risks of Standardized Options and Option Spread Risk Disclosure before trading options.