Contract Size The deliverable quantity of goods or commodities underlying futures, forward and option contracts. Investopedia Says: Each contract will have a well defined contract size. For example, most equity options have a contract size of 100 shares. So, if the option is exercised, 100 shares of the underlying company must be transferred between the option holder and writer. Related Terms: Aggregate Exercise Price Average Daily Trading Volume - ADTV Call Exercise Forward Contract Futures Contract Option Put Strike Price Underlying |