Underlying
Asset the option is based on
What is Underlying?
Underlying The stock, ETF, or index that an option derives its value from. AAPL stock is the underlying for AAPL options. SPX is the underlying for SPX index options.
Complete Definition
The stock, ETF, or index that an option derives its value from. AAPL stock is the underlying for AAPL options. SPX is the underlying for SPX index options.
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