Quote from lejmorro:
Guys, thank you, you are right! I hear you. I let my margin ratio get too high.
OK, then what is your maximum margin ratio in your account? 25%? 40%? higher? Presumably whatever it is, it will cover you from an unexpected assignment of say 10 short put contracts of SPY worth about $100K?
Because by my reckoning, if I want to be able to keep within margin and cover the unexpected assignment, I am out of the game because I dont have enough stock/cash.
Of course, the best policy is never to let a short get in the money sufficiently to be assigned. But I've studied the Red Option archive of iron condors over the last 3 years and even Scott Snyder, a conservative trader I think, let a few short spreads go through to expiration in the money.
And if you have to hedge or bail out of your credit spread whenever the underlying approaches the short strike, is it worthwhile putting on the spread in the first place. There are plenty of experienced traders on ET who say NO because the risk/reward is not good enough. I used to be in the YES camp, but with regular multi percent swings up and down in hours, you have to say NO.