Calls Puts
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Mar Jun Sep Mar Jun Sep
BMW
500 45 60 75 15 20 28
550 35 45 65 25 28 35
600 20 42 48 30 40 55
VW
300 20 30 45 17 20 27
320 16 24 20 21 28 35
340 15 20 24 25 36 42
All calls are of the same option type .
Similarly, all puts are of the same option type.
Options of the same type that are also in the same class are said to be of the same class.
Options of the same class and with the same exercise price and the same expiration date are said to be of the same series