In the above two images, you will see that sell trade executed at 9:46:33 at 108.7 whereas till 9:49am low was 121.8. How is it possible?
The resolution provided by Exchange
Due to an issue with price feeds for Bank Nifty options received from the exchange, all market orders on Bank Nifty option contracts have been blocked. Please use limit order or stop loss (SL) orders. So, this is a lesson that you can derive home from today's technological fiasco.
Our Verdict
We fail to understand that if NSE has identified the issue then why it does not cancel all the trades executed today and close the fresh trades and do not allow trading in this segment till the issue is resolved. The expiry can be undertaken with some other modalities. SEBI should look into this issue as such technical errors mean that machines can create havoc and traders will keep incurring losses due to poor infrastructure and decision paralysis at NSE. Some responsible person has to be present during the market hours to take an on the spot decision so that the retail traders are not slaughtered.
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