TLSA is currently trading at $170 per share. If we are valuing a call option on TSLA, and Elon Musk tweets about a new TSLA electric semi that will come out soon and in response TSLA stock instantly goes up by $10 per share, a TSLA $160 call option will go up by a TSLA $180 call option (assume the calls have the same maturity or expiration date). less than the same as more than impossible to determine