To take you thru this series 18800 and 18900 CE were available at sub 50 levels in this series. They expired at (Not the highs) 673 and 578 respectively. More than 10 fold jumps all in a matter of 4 trading days.(cutailed expiry). 19000/19100 calls were avaialble at sub 20 levels (19100 CE was availalble at a low of Rs.14 only yesterday) they closed at 466 and 362 respectively. Close to 20 fold jump in 2 trading day. It gets even better with 19200/19300 CE. They both were avaiable at a low of 14 and 3 respectively today itself before expiring at 245 and 155. 19400 was available at a low of 0.55 before expiring at Rs.70. (Rs.20 to R2800) More than 100 fold.