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What is the smallest unit for trading US stock options?

BiyaPay

Published on 2024-09-11 Updated on 2025-06-19

The minimum unit for trading US stock options is one contract, which generally corresponds to 100 shares.

For example, TSLA has an expiration date of July 15, 2030. The current price of a bullish option with an exercise price of 200 is 5.5 dollars, and the contract value is 5.5 dollars * 100 = 550 dollars.

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