【準分析師】評論
X2＞X1看多後市的到期損益(A) Buy Call 買買權，MAX(S-X-C，-C)(B) Buy Call + Sell Call 買權多頭價差，MAX(S-X1-C1，-C1)+min(X2-S+C2，+C2)(C) Buy Put + Sell Put 賣權多頭價差，MAX(X1-S-P1，-P1)+min(S-X2+P2，+P2)看多後市的到期損益(D) Sell Put + But Put 賣權空頭價差，min(S-X1+P1，+P1)+MAX(X2-S-P2，-P2)