Costco (NASDAQ: COST) October weekly call option implied volatility is at 58, October is at 25, November is at 22; compared to its 52-week range of 15 to 33 into the expected release of Q4 results today after the market close. Call put ratio 1.1 call to 1 put with a focus on October weekly 235, 237.50 and November 250 calls. October weekly 230 and 232 puts are active. October 232.50 straddle priced for a move of 2.4%.