| Strategy ViewInvestor thinks that the market will not fall, but wants to cap the risk. 
 Conservative strategy for one who thinks that the market is more likely 
 to rise than fall.
   Strategy ImplementationCall option is bought with a strike price of a 
 and another call option sold with a strike of b, 
 producing a net initial debit,
   - or -   Put option is bought with a strike of a 
 and another put sold with a strike of b, 
 producing a net initial credit.    Upside PotentialLimited. With calls, upside is the difference between the strikes and the 
 initial debit. With puts, it is the initial credit. Maximum profit occurs 
 if the underlying trades above strike b.
   Downside RiskLimited. Bull spreads created with calls creates an initial debit that 
 is the risk; With puts, the difference between strikes and the initial 
 credit is the risk. Worst case occurs when the underlying instrument at 
 option expiration is trading lower than the strike a.
   MarginPossibility for margin requirements to be off-set.
   CommentTime decay is not too significant due to the balanced position.
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