Uh oh, be careful with that. I hope this is a demo trade.

Options typically gain in value prior to earnings, so the idea is to sell before the actual earnings announcement. The reason for this is that volatility, the main driver in the price increase, tends to drop off very sharply following the announcement such that you might actually lose money even if your call was correct.

I've never played a straddle on earnings, but I've definitely seen the bloat in premiums, so tell us how it goes.