So a Cisco September $15 call should be about 15 times 30%/5 = 90 cents. Guess how much its trading at right now ? That's right, 88 cents! 90 cents or 88 c

So a Cisco September $15 call should be about 15 times 30%/5 = 90 cents. Guess how much its trading at right now ? That's right, 88 cents! 90 cents or 88 cents is a world of difference to day traders and hedge funds.