Ok to look at a single option delta, you can view it on the option chain or inside the analyze tab.
Now to figure out when it hits 20 delta… I’ll show you the simple way first.
1. Find out the current 20 delta option:
2. Subtract that strike from the strike of the short option you have. So if you have on the 2220 short call, then it would be 2220-2200 = 20 points
So basically if you have a 20 point move higher you probably need to look to adjust.
The more advanced way to do this is use the options analytics, and instead of looking at P/L Open, you look at Delta:
And then you figure out at what price the delta will be 20.