Work in progress. Come back later. Or visit this: https://www.tastytrade.com/shows/market-measures/episodes/the-importance-of-adding-negative-delta-02-08-2016.
Work in progress. Come back later. Or visit this: https://www.tastytrade.com/shows/market-measures/episodes/the-importance-of-adding-negative-delta-02-08-2016.