Cairns 1H (-4) @ $1.90 (0.5)
1H o79.5 @ $1.90 (1)
Cairns (-8) @ $1.90 (1.5)
o157.5 @ $1.90 (2)
Cairns 1H (-4) @ $1.90 (0.5) =
1H o79.5 @ $1.90 (1) =
Cairns (-8) @ $1.90 (1.5) =
o157.5 @ $1.90 (2) =
(3-1) +2.60 units