At Expiration Mar 1st, 2021
The cost of the strangle was 54 tics.
Our initial delta hedge Sell at .9000 buyback at .8920 we made 78.5 tics but since it was only on 50% of the hedge it was 78.5/2 = 39.25 tics on the full position
The second delta hedging we sold at .9040 and again at.9095 and with the forward roll turned into an average of 9065.5
Today we exercised the 89.75 CHF put at expiration.
The total gain is 90.5 + 39.25 = 129.75
Gross gain on Capital = 129.75/54 = 240% return on capital