Jim Riggio and Paul Demers discuss Managing by the Greeks. The presentation discussed option greek ratios. Brian Johnson's book has taken the old Delta/Theta and Vega/Theta ratios to the next step by incorporating the volatility of volatility. The author, Brian Johnson, attended and participated in the chat.Paul Demers showed his spreadsheet that he is developing to try to accurately estimate vega in multi-expiration option spreads by using weighted vega Download the video at http://members.capitaldiscussions.com/join