The Greeks are a critical part of options trading. They help you understand the risks associated with an option trade and how they can impact your bottom line. There are four main Greek symbols: delta, gamma, theta, and vega.Delta is used to measure the change in an option's price given a one-point change in the underlying security. Gamma measures how much Delta changes as the price of the underlying security moves up or down. Theta tells you how much value an option loses each day due to time decay. Vega measures how sensitive an option's price is to changes in volatility levels.Knowing what these risks mean and how they affect your trades can help you make more informed decisions about your options strategies. By understanding The Greeks, you can better protect your portfolio against potential losses while still allowing for some riskier plays that could potentially lead to bigger profits.