What are the key terms and concepts I need to understand in option trading? 

Introduction

Option trading is a type of trading where traders can buy or sell options contracts on different underlying assets such as stocks, indices, currencies, and commodities. Options contracts give the holder the right, but not the obligation, to buy or sell the underlying asset at a fixed price.

Call option

A call option is an options contract that gives the holder the right, but not the obligation, to buy the underlying asset at a fixed price before the expiration date. Call options are generally purchased by traders who expect the price of the underlying asset to rise.

Put option

A put option is an options contract that gives the holder the right, but not the obligation, to sell the underlying asset at a fixed price before the expiration date. Put options are generally purchased by traders who expect the price of the underlying asset to fall.

Strike price

The strike price is the fixed price at which the underlying asset can be bought or sold. It is also known as the exercise price or the striking price.

Expiration date

The expiration date is the date on which the options contract expires. After this date, the holder of the contract loses their right to buy or sell the underlying asset.

Option premium

The option premium is the price paid by the buyer of an options contract to purchase the right to buy or sell the underlying asset at a fixed price. The premium is determined by a number of factors including the price of the underlying asset, the strike price, and the time remaining until expiration.

Option chain

An option chain is a list of all available options for a particular underlying asset. It includes information such as the strike price, expiration date, and the bid and ask prices of the options.

Implied volatility

Implied volatility is a measure of the expected future volatility of the underlying asset based on the price of the options contracts. It is used to help traders determine whether an options contract is overpriced or underpriced.

Conclusion

Understanding these key terms and concepts is essential for traders who want to become successful in option trading. By knowing these terms and how they are used, traders can make more informed decisions about buying and selling options contracts.