@7out, thanks for the explanation. Yes, your calc is correct.
Here one can analyze the 1st case further graphically:
https://www.optioncreator.com/stcwpv7
You can fill-in the Premium field, it will calc the IV.
Here one can analyze the 1st case further graphically:
https://www.optioncreator.com/stcwpv7
You can fill-in the Premium field, it will calc the IV.