ExIRExIR 16711 bronze badge $endgroup$ one $begingroup$ Thanks for encouraging, but does that necessarily mean theta pnl only partly offsets Gamma pnl instead of thoroughly even if implied vol = understood vol? Because assuming interest charges are zero, there isn't a other supply of producing income. $endgroup$ I am particularly https://www.youtube.com/watch?v=qMmsQ4kKgY4