
Portfolio A = Call + Cash, Cash = Call Strike Price
Portfolio B = Put + Underlying Asset
Expiration values dva portfolia je jednaka.
Call + Cash = Put + Underlying Asset
25 Call + $2500 = 25 Put + 100 XYZ Stock
Ako dva portfolia imaju isti Expiration values, moraju imati istu trenutnu vrijednost.
Ako ova činjenica nije zadovoljena, arbitražni investitor može uči u long poziciju podcijenjenog portfelja odnosno
Shortati precijenjeni portfolio kako bi ostvario profit bez rizika na expiration day pojedine opcije.

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