Trading Delta-Neutral...Again
If I choose to purchase the GOOG Nov 420 Call, and Buy the GOOG Nov420 Put this creates a straddle. Notice the values of each options delta. The delta of the call is .51, and the delta of the put is -.51. This would mean the two values cancel each other out and equal zero. Any gain in the call would be equally offset by the loss in the put, and any gain in the put would be equally offset by loss in the call. If I were expecting a rise or fall in volatility, I might purchase or sell this straddle to profit from it.
My intention here was to show a specific example of how this works. You can also create this scenario by multi-leg option trades. Make sure you are compounding all your deltas until they equal or get close to zero. This will help you eliminate price as a factor and focus strictly on volatility.