Chris311
I think you answered your own question. Diversification is a major safety tool. When used correctly. I ceased diversifying into sectors that I don't beleive in, just for the sake of diversity. I diversify within the sectors I like. And weight my sectors according to my confidence level. Big positions in things I like and small in those I don't feel so sure of. But that is the only protection from the catastrophic hit. Like NTRI, it was one position out of about 35, I made bad choices and it made a nice dent in my profits, but not to a serious degree.
I've had other hits to, but I weathered them because of the inherent protection of the DITM spread. Almost all of the losses are contained.
But I feel your pain. My account is large enough that I can diversify. Smaller accounts are a lot more challenging because you can not afford the diversity of a larger account. So a bad position in a 10K account with only 5 positions is a lot harder to deal with. No help for it, just you must be more carefull than the other guy. But you can also scale a position to one spread. That amounts to 20 spreads in twenty different stocks if you want to go that way. That's pretty good diversity.
The rolling I do is all vertical, in the same month. I don't ever do calendar spreads because I do not understand them well. I roll one leg of a spread on rare occasions when I feel putting more money into a wounded spread is worthwhile. There are more complicated moves, but generally they are few, affecting less than 5% of your positions. Too complicated a subject for right now.
I think you answered your own question. Diversification is a major safety tool. When used correctly. I ceased diversifying into sectors that I don't beleive in, just for the sake of diversity. I diversify within the sectors I like. And weight my sectors according to my confidence level. Big positions in things I like and small in those I don't feel so sure of. But that is the only protection from the catastrophic hit. Like NTRI, it was one position out of about 35, I made bad choices and it made a nice dent in my profits, but not to a serious degree.
I've had other hits to, but I weathered them because of the inherent protection of the DITM spread. Almost all of the losses are contained.
But I feel your pain. My account is large enough that I can diversify. Smaller accounts are a lot more challenging because you can not afford the diversity of a larger account. So a bad position in a 10K account with only 5 positions is a lot harder to deal with. No help for it, just you must be more carefull than the other guy. But you can also scale a position to one spread. That amounts to 20 spreads in twenty different stocks if you want to go that way. That's pretty good diversity.
The rolling I do is all vertical, in the same month. I don't ever do calendar spreads because I do not understand them well. I roll one leg of a spread on rare occasions when I feel putting more money into a wounded spread is worthwhile. There are more complicated moves, but generally they are few, affecting less than 5% of your positions. Too complicated a subject for right now.