wayneL said:Just a point. When the vertical spread is left till expirey, exercize/assignement is the only way to crystallyze your profit.
Market Makers do not put up prices before expirey. Any funny business will be quickly arbed away. However the the trading activity of traders exiting option positions prior to expiry may push prices around somewhat.
Option Pricing Models are notoriously innacurate in the days before expity and this is one of the reason why. Just do your summs at the time.
In my trading, anytime I can get more than 90% profit I will close or morph, irrespective of anything else.
Providing both happen at expiry, yes.
Cheers
I concur with this approach. Generally I’d prefer to wind out a debit spread before it gets too close to expiry (generally around the 30 days to expiry range), and certainly would consider exiting when at 90% profit, this makes good sense to me.
Wayne is quite right about the odd things that happen around expiry time – there is a lot of juggling to avoid “pin risk” for example where the underlying closes exactly at an exercise price on the expiry day.
Regards
Magdoran