Greeks

The word “Greeks” means (finance) A set of measures showing how sensitive an option's price is to different market factors, each traditionally named after a Greek letter. In plain terms, a finance term for risk measures used in options trading, so called because they are named after letters like delta and theta.

“Greeks” is pronounced greeks (/ɡɹiːks/ in IPA).

Here is “Greeks” used in a sentence: “Traders check the greeks — delta, gamma, theta — before adjusting their options positions.”

“Greeks” is a noun.

“Greeks” is an uncommon word in modern English.

In finance, "the Greeks" refers to a set of measures showing how sensitive an option's price is to different market factors, such as changes in the underlying asset's price, volatility, or time. Each measure is traditionally named after a Greek letter, such as delta, gamma, theta, and vega.

They are called "the Greeks" because each risk measure is traditionally labeled with a Greek letter, such as delta or theta, as a naming convention to distinguish the different sensitivities being tracked. This convention makes it easy for traders to refer to specific risk factors by a single symbol.

Anyone trading options is generally expected to understand at least the basic Greeks, since these measures show how an option's price will react to changes in the underlying asset, volatility, and time. They are considered essential tools for managing risk in options trading.