Let me know when you figure it out
Okay, I was right, it's a ratio that is applied to the call price. So, to estimate the movement of the call, you need the delta and price:
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Examples of Delta
Let's assume there is a publicly-traded company called BigCorp. Shares of its stock are bought and sold on a stock exchange, and there are put options and call options traded for those shares.
The delta for the call option on BigCorp shares is 0.35. That means that a $1 change in the price of BigCorp stock generates a $0.35 change in the price of BigCorp call options. Thus, if BigCorp’s shares trade at $20 and the call option trades at $2, a change in the price of BigCorp’s shares to $21 means the call option will increase to a price of $2.35.
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So, in this case, the stock only moves 5%, but the call option moves 17.5%. Even though the delta is low compared to an in the money calls, it moves the option relatively more due to its lower price. WORD!
