Quote from Put_Master:
Cman: My rule is to close all losing Spreads 30-21 days before Expiration, to avoid the Rapid Time Decay near the end, and avoid a Max Loss.
PM: I'm a little confused. Don't you want your credit spread to have that rapid time decay of the last few weeks?
It is NOT the time until expiration that should determine when to close down a deteriorating stock.
It is how close the stock is getting to your upper strike that is the determining factor.
Once the stock is inside and between your strikes, that is where your rate of loss begins to really speed up.
The deeper between your strikes the stock gets, the larger your loss.
Thus, it's always best to close a deteriorating stock BEFORE it hits your upper strike.
That's why the otm safety cushions of credit spreads are an "illusion".
Very risky to let a stock touch your strike. Because once it's inside, and between your strikes, your rate of loss really picks up steam.
And once it's inside, you know you can not consider buying the stock because of the excessive margin of credit spreads.
(The higher the strike, the higher the leverage.) [/B]
Cman: I think we're saying the same thing in different ways.
A "losing" Bull Put Spread to me is when the stock falls below the upper strike, thereby going In The Money.
The Rapid Time Decay then causes the Bull Put Spread to get more expensive to Buy to Close (as the price of the Spread approaches $1.00 at Expiration), thus rapidly increasing your loses.
I don't like closing a Credit Spread as soon as the underlying stock goes In The Money, because if there's enough time left before Expiration (more than 30 days), and the trend is still in place, the stock will many times go back Out Of The Money and I can still win on the trade.
I think you're also referring to the risk of "Early Assignment". As long as the Option you sold still has some Extrinsic Value, it's more profitable for the owner to sell the Option, rather than Exercise it for stock.
It's that Extrinsic Value that rapidly declines during the the last 30 days. So if I Buy to Close at 30-21 days before Expiration I don't lose all the Extrinsic Value, and shouldn't suffer Assignment.


