The Greeks from finance are the different ways we measure risk and the potential outcomes of financial investments. They come from ancient Greek mathematics, so they have very difficult names like "Alpha" and "Gamma."
Essentially, when someone is investing money, they need to know what the chances are that they will make a profit or a loss. The Greeks measure the different things that could lead to profits or losses. For example, one factor is called "Delta" which measures how much an investment is likely to change in value according to certain factors like the amount of time an investor has to wait for the profit to come in.
It is important for investors to understand these different measurements so that they can make informed decisions about their investments. This way, they can ensure that their money is as safe as possible.