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This is the difference between the expected market value of the stock and the current market value of the stock. Howevr, this is not the theoretical value of the option on the date it is written.
At the time the option was written, it had no theoretical value. This is because the option exercise price ($40) was higher than the market price ($34). Because of this, no one would use the option to buy a share since it would be cheaper to buy a share on the open market.
This is the market value of the option. However, the market value is not the same as the theoretical value of the option on the date it is written.
This is the difference between the exercise price of the option and the current market price of the stock. However, that is not the theoretical value of the option on the date it is written.