Yes, depends on the trade.  40-50% gain in a very short period of time, likely close.  Some are more likely to close 30% gains than others in short period of time, depends on trading style.
  I look at return per week per margin maintenance dollar.  Generally looking for close to 2% or greater return per week in establishing a position, but with high probability of success.  So if return per week drops to <1%, book profits and close.  Between 1% and 1.3%, questionable.  Above 1.3%, more likely to continue to hold.
  So just hypothetical example; establish a trade; $2K in premium received from selling short puts and $10K maintenance to hold with 10 weeks until expiration.  So if 4 weeks later, the stock price has improved, the maintenance requirement has dropped to $8K - if the remaining premium is <$480 I'd likely close, between $480-625, would depend on things like size of position, how market is acting, how close to the money the position is (probability of being OTM at expiration), whether I have other strikes/months in same company, etc., and above $625 would probably continue to hold. (with assumption that I can find another new position to replace existing with close to 2% return per week)
  Real-world examples: I sold a few SWI Dec. 30 puts today for $1.35.  Premium received was almost 30% of initial margin requirement, with expiration just over 16 weeks away - so just under 2% per week target.  Probability of SWI remaining above 30 at Dec. expiration (pOTM) is currently ~75%, and I currently have a little under 20% downside protection.  Will see how it works out.
  I sold some SLCA Sept. 20 puts some weeks back for 55 cents.  They are now 10/15 cents bid/ask.  So my gain is ~70%, and at 15 cents ask, there is about 7% of current margin maintenance dollars remaining to gain with just over 3 weeks remaining.  Current pOTM is ~92%, and I have no other SLCA exposure currently. If ask were to fall to 10 cents this week, I'd likely close.  At 15 cents and with high pOTM, return is above 2% per week yet so I will hold.  Others may just lock the gains at this point.
  KJ |