Should I exercise or Close out IMAX

I am in the Money with the DEC 10 20 CALL for IMAX. (1 contract)

Should I close out the option and take $435 profit or exercise and buy @ the $20 strike price and sell at current market price of $27 and take $700 profit (not taking fees into consideration yet)

 

That sounds like a once in a lifetime arb opportunity: exercise one way for a $700 profit or close the opttion for only a $435 profit.

Here are two tips:

1) Read more about options
2) Short the stck and exercise a deep ITM call like this if it trades enough below intrinsic to yield more than just closing the call (slippage and commish)

 

thanks for your input, I decided to close out the options instead of exercising.. I didn't have enough funds to cover the cost of buying the shares