An Option Class refers to all the call options or all the put options listed on an exchange for a particular underlying asset. For example, all the calls available for trade on Apple Inc. (AAPL) stock would be part of the same options class. All the puts listed on Apple would be part of another, related class.Options classes are important because they provide investors with more choices when it comes to investing in stocks and other securities. By having multiple classes of options available, investors can choose which type best suits their investment strategy and risk tolerance level without limiting themselves to just one option type from any given company or security issuer. This allows them greater flexibility in terms of how much money they want to invest as well as how long they plan to hold onto their investments before selling them off again at a later date if desired.In addition, trading within an individual option's class may also give traders access to additional features such as leverage and margin requirements that may not otherwise be offered by traditional stock trades alone – making it easier for smaller traders who don’t have large amounts capital upfront but still wish take advantage market opportunities that arise due various factors like news events etc., while managing their risk exposure accordingly. As such, understanding what each different types assets offer is essential when making decisions about where allocate funds most effectively based upon individual goals objectives.