Quote from TrendSailor:
Thanks MoM. I am actually well versed with probability and statistics from my prior scientific/engineering background. The thing that helped me form this unorthodox "attitude" or perspective about the double down approach is based on something I read at another options advisory site. Admittedly it is not something I was taught in college and I have traditionally been very conservative in this kind of thinking. However, in my studies we never constrained the the distributions by "groups" of trades. I can't quote my source but what I have become aware of is a probability table that predicts the probability of a number of concurrent losses for a given trade success/win rate in a 50 trade period. I think when the grouping is done this way there are generalizations that can be formed about the expected number of worst case runs of losses.
Here is what I have seen:
Probability of seeing at least X consecutive losing trades
Within a 50-trade period given an a-priori win rate statistic
Consecutive losses: X
2 3 4 5 6 7 8 9 10 11
80% Win Rate 86.5% 32.0% 7.2% 1.5% 0.3% 0.1% 0.0% 0.0% 0.0% 0.0%
85% Win Rate 67.2% 15.0% 2.4% 0.3% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0%
90% Win Rate 38.9% 4.7% 0.5% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0%
95% Win Rate 11.5% 0.6% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0%
Given that the Iron Condor strategy on the SPX has about an 85%-93% win rate I think if one has deep pockets it may pay to double down. My problem is my nads are not that large yet or I am not that desperate... yet. It may be a chicken and egg problem though and I can't afford the futures hedge on my family tree without subjecting myself to the possibility of being hung by same...
Thanks for your comments.
TrendSailor