Talk:Iron butterfly (options strategy)

What is rt in the formula?
Risk * time? Rate * time? Rate of what?

Iron Butterfly Graph
[[Media:Iron Butterfly payoff.png|This graph depicting the Iron butterfly strategy]] shows long in the money calls and puts, but both the description of the Iron Butterfly, and the graph's legend describe the long call and put as being out of the money. --2602:30A:2E7F:4F0:0:BAD:BEEF:CAFE (talk) 10:49, 13 October 2016 (UTC)