When we rose from 4800 to 5100-5200 quickly, Put call ratio jumped from 0.95 to 1.5+. This meant more puts have been bought compared to calls. So if market falls, put writers would burn their hands with unlimited loss.. so their attempt will be to save themselves by not making the market fall.
Now, put call ratio past few days has dropped from 1.25 to 1.05 or so. Indicating more calls have been bought, means market sentiment was positive. Capitalizing on that, calls are being written even more because the sentiment is there means buyers are also there.
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