That means if the stock price goes up and no other pricing variables change, the price for the call will go up. Here's an example. If a call has a delta of .50 and the A bank has sold for $300,000 a European call option on 100,000 shares of a nondividend paying stock. ○ S. 0. = 49, K = 50, r = 5%, σ = 20%, T = 20 weeks,.