also if you look sensex 77900 ce, it was 1 was 3.19pm and sudden movement in last 6 candles. in last 2 min, it went from 50 to 10.
in normal expiries, i have obserrved option movement till 3.21-3.22pm, and by 3.26-3.27, the closing price is determined and itm, ctm options don’t show much movement. but last 3 sensex expiries, it is completely opposite and horrifying at same time