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Lot Size

The number of shares of the underlying in an Option contract is called Lot size.

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Unlike trading in equity, options are traded in lots. You have to buy minimum 1 lot of options which could include many shares.

For example,

  • Infosys stock options are traded in the market lot size of 600.
  • Nifty Bank Index Options (BANKNIFTY) are traded has the market lot size of 40.


  1. Exchange decide the lot size of the options.
  2. An investor could buy shares of a company in the quantity of 1,2, 100 or 1000's. But in case of options, the trader can trade only in lots.

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