# Delta

*Derivatives & Options — Finicade finance glossary*

How much an option's price moves for a $1 move in the underlying — the first and most-watched Greek. A delta of 0.5 means the option gains about 50 cents when the stock gains a dollar; it also tells you how many shares to hold to hedge.

**Related terms:** [The Greeks](https://finicade.com/glossary/the-greeks), [Gamma](https://finicade.com/glossary/gamma), [Delta Hedging](https://finicade.com/glossary/delta-hedging)

**Taught in:** Hull Street — The Greeks, in Full

Source: https://finicade.com/glossary/delta