Trade Executed @ a Price which is not on Charts! Weird

General
1

Hello,

I have several trading accounts with different brokers like Zerodha, RKSV & SAS Online. I use different accounts to execute different strategies of mine so that i can keep a track of how different strategies are performing.

Today i came across a weird trade which has never happened in 3 years of my trading experience.

I was using my account at RKSV securities and had executed a long cover order with Stop Loss @ 7902 [NIFTY15AUGFUT], suddenly i see that the stop loss order is executed for a price of 7901 (Trade Time - 10:58:12 AM).
However i see in all the 1 min charts (From RKSV, SAS & Zerodha Pi) that the lowest price between 10:31AM to 11:24AM was not below 7903.25. Then how did my sell stop loss order get executed at 7901?

When i called RKSV with the same question, their RMS team said that sometimes if the changes happen very suddenly its not recorded in any of the charts, its just a charting error!

My Question - Is the justification given by RKSV RMS team correct?

How often does things like this happen?

2

you can read this answer related http://tradingqna.com/8843/technical-charts-google-finance-yahoo-finance-amibroker-match

3

Yes this can happen. The data you get on your chart does not encompass all the trades that have taken place in the market and are confined to the candles on the screen. If you want the data of all the trades done for that time period, you will need a tick by tick data, which you will need to obtain from a data vendor and is quiet expensive (15k+).

These anomaly are known and incase it has effected to you, an enquiry can be sent to the exchange, if in that trading session, that specific price was hit.