Question

The following transactions are the only ones made during the first 4 days of trading in a futures contract.

DAY          TRANSACTION

1         A long 50, B short 50

2           A long 80, C short 80

3               A long 20, D short20

4 C long 70, A sells 40, B sells 30

What is the open interest on these 4 days?

		None of the given answers are correct
		50, 130, 150, 180
		50, 130, 150, 190
		50, 130, 150, 110
		50, 80, 20, 70

Answer 1

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Answer:

1         A long 50, B short 50 -> 50

2           A long 80, C short 80 -> 50 + 80 = 130

3               A long 20, D short20 - > 130 + 20 = 150

4 C long 70, A sells 40, B sells 30 -> 150 + 70 = 220

Hence none of the above