An option chain is a listing of all the put option and call option strike prices along with their premiums for a given maturity period. Here’s how to read it:

1. **Option Ticker**: The unique series of letters that identifies the option.

2. **Bid and Ask**: The prices buyers are willing to pay and sellers are asking for, respectively.

3. **Contract Name**: This usually displays the underlying asset, the expiration date, and the strike price of the option.

4. **Last Trade**: The price at which the last transaction occurred.

5. **Change**: How much the last trade price has changed since the previous trading day’s close.

6. **Volume**: The number of contracts traded that day.

7. **Open Interest**: The total number of outstanding contracts.

– Reference: [Investopedia: Understanding Option Chains](https://www.investopedia.com/articles/optioninvestor/04/121704.asp)