In order to read the option chain you need to know each of its terms
The price on which both options buyers & sellers complies with each other for the options contract.
The price which buyers agreed to pay per option contract. When an investor wants to sell an option contract, he/she has to sell it to a buyer with a certain bid price.
Here bid quantity refers to the total amount of option contracts on the buyer’s side.
The price which sellers agreed to receive for an option contract. When an investor wants to buy an option contract, he/she has to buy it from a seller with a certain ask price.
Here ask quantity refers to the total amount of option contracts on the seller’s side.
Stands for last traded price of an option contract.
Net changes of option contract with last traded price
The total number of all outstanding option contracts. Here in NSE option chain, it has both for Call option & Put option.
Change in OI:
The number of changes with all outstanding option contracts, i.e open interest. This is also shown two times for each of the call & put option type.
IV stands for Implied volatility. This is a parameter in the black Scholes Merton pricing formula. How to use it for finding call option & put option premium will explain later.
The volume of the call & put option contract on a specific strike price.
If prices are up and volume and open interest are rising, the market is strong.
Weak bullish trend, possible reversa
If prices are up and volume and open interest are declining, the market is weak bullish trend.
If prices are down and volume and open interest are rising, the market is weak.
Weak bearish trend, possible reversal
If prices are down and volume and open interest are declining, the market is weak bearish trend.