Why would anyone implement delta-gamma neutral hedging? I understand you wouldn't lose money, but conversely, you wouldn't make money either. Like if I buy 1 XYZ 50 call option w/ a delta of, say, 20, and I short 20 shares of XYZ to become delta neutral. Next day, the call's delta raises to 30, so I short an additional 10 shares. Day after that, the delta falls to 10, so I cover 20 shares. What's the purpose of this? Can anyone explain this to me?