need help with a Mindbender of my own...

#1
Hello All,
Its great to finally have something to post on this forum. All this time I have been mostly an avid reader of this forum and learnt quite a lot from it. Alright, so here it goes. I had an options trade closed today morning due to its stoploss getting triggered, and the I cant understand 10 minutes of trade session for this contract before my SL got triggered. So, I would really appreciate any help understanding the trading session for the first 15 mins (9:15-9:230) today morning. So below are the details..

Contract Name: Nifty May, Call Option, Strike Price 7800
Trade Opened: 6th May at 99.05 price
Stoploss set on 9th May Morning (today morning religiously at 9:15 am): 128.1
Contract's High in first 30 mins: 187.55
Contract's Low in first 30 mins: 107.35

Ok, so following are the details as I have seen it happening
  1. Option contract had closed at 163.2 yesterday, and opened today at 187.55 with nifty pretty much opening flat. So not sure how it could open so high up at 187.55
  2. There are only 225 contracts traded in the first min (@ 9:15) at 187.55 price and then on no transactions for the next 10 mins. So, in the meantime I have already put my SL at 128.1
  3. So from 9:25 onwards the contracts begin trading again, and the price falling all the way to 107.35, there by hitting the SL. and in the next few mins the price has settled comfortable at 154. This behavior did not happen with Call Contract or 7900 or with 7700. They were in line with the Nifty index.

So, I have the following questions which I would really appreciate any input helping me to understand this better.
  1. How can the option price open so high and stay there for 10 mins without any trade being recorded? and with Nifty index and Nifty Futures behaving normally.
  2. I have checked multiple sources for charts to understand how and what exactly has happened. But they dont seem in sync. For example investar and zerodha charts to not match but yes the low/high and volumes do match up. Any other chart/source which I can use to confirm this behavior. Calling up Zerodha support today morning at the time of this happening was no help at all, as either they seem to be too busy to not pick up the call or the call kept getting terminated after being connected?
  3. Was this an technical problem at NSE or this is how exactly it has happened or a shakedown to hit all SL's for profitable positions in this contract?

Below is the 1 min Nifty Chart Showing not much spike's or any gaps
Nifty_50_On_10_May.png

Investar 5 min chart for Nifty Call Contract for 7800
Nifty_May_CE_7800_On_10May_Investar.jpg

Zerodha 1 min chart for Nifty Call Contract for 7800
Nifty_May_CE_7800_On_10May_Zerodha.png

I would appreciate any help in understanding how and what happened with this trading session for the contract.

Thanks and Regards,
Nimesh