Check the chart. The right side shows y'days Put n Call OI.
The long left side shows today's OI.
Check the 4900, 5000 & 5100
PUTS OI.
4900 has increased from 4603600 to 5413750 (increase of approx 18%)
5000 has increased from 2615450 to 4078400 (increase of approx 64%) -
whopping!!!!
5100 has also increased very good mannerly in % terms BUT in vols, it is very low.
Now check
CALL OI
5000 has decreased from 3652550 to 3219850 (decrease of approx 12%)
5100 has decreased from 3266350 to 2443050 (decrease of approx 26%) -
makes a difference!!!!
5200 has decreased from 3611350 to 3217250 (decrease of approx 12%)
Shows that mkts have a lot of upside left i.e. as of today. Change in OI will signal newer highs or dips in market.
This info is available on the NSE website Real Time and can be checked anytime during the day as many times as you want to gauge the market direction.
I usually check when mkts are rangebound to see what is being written and what is being covered/sq off.