Delta is a measure of the change in an option's price in response to changes in the price of the underlying asset. It is one of the most important "Greeks" (measures of risk) used in options trading. The delta of an option can range from 0 to 1.0 for a call option, and from 0 to -1.0 for a put option. The delta of an option can be thought of as a percentage that indicates how much the option's price will change in response to a 1% change in the price of the underlying asset. For example, if an option has a delta of 0.50 and the underlying asset's price increases by 1%, the option's price would be expected to increase by approximately 0.50%. Delta can be used to hedge against risk or to speculate on price movements.

The Greeks are a set of risk measures that describe the sensitivity of an option's price to various factors such as the underlying asset's price, time decay, and implied volatility. The Greeks are useful tools for options traders and can help them better understand the risks and potential rewards of their positions. Here are the most commonly used Greeks:

Delta: Delta measures the sensitivity of an option's price to changes in the underlying asset's price. Delta is expressed as a number between 0 and 1 for call options and between 0 and -1 for put options. A delta of 0.5 means that for every $1 change in the underlying asset's price, the option's price will change by $0.50.

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