Spot vs Future price difference

Since there was 15 rs difference between spot and future price, Ashwini gave a long call on MindTree.

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I don’t remember what were the SL and target given but I am curious if there are trading opportunities here both in Spot and Futures side.

Also, please can anyone point me to some good resources to learn more about this ?

Mindtree announced an interim dividend (moneycontrol) on 6/4/18, without the dividend though. The record date is 25/04/18. Since the futures contract holders are not entitled for dividend, the futures trade on a discount. The earlier interim dividends were of the order of only Rs.2 per share. But the discount seems very high!
Oh, the discount also dropped to around Rs.7.50 now.

My systems is giving SL for Mind tree being 818 /814 / 803 / 796