Hi I am new to future trading. I have a doubt. On Aug 9 2024, I sold 1 contract of INDUSIND FUT Normal at price of Rs 1354.85 . Now on 13 Aug , I took an Intraday trade on INDUSIND FUT to check something. I Bought 1 contract at Rs 1373.75 and sold it at RS 1374.20 ( this was intraday). On the next day that is today The NRML contract of INDUSINDFUT is showing average price of RS 1374.20. HOW DOES IT HAPPEN? CAN ANYONE PLEASE EXPLAIN
The buy average for F&O positions is calculated using the FIFO (First In, First Out) method, regardless of the product type used to close the positions (MIS or NRML)
Net effect on your overall P&L will still be the same irrespective of type of calculation so THERE IS NOTHING TO WORRY FOR YOU. 
Thanks for replying. Can you also please suggest me any 1 good book
for future trading.
For the basics with pretty illustrations
https://www.amazon.in/Futures-Options-Blueprint-Zebra-Learn/dp/8195895050/
The FIFO averaging concept is same in cash-market stocks too.
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I don’t think it happens in equity. Suppose I have 100 shares @ Rs 1000. Now, if i purchase 100 shares for intraday @1010 and sell it @1020, my new price won’t be 1010, it will remain same at 1000.
If you book partial profits in equity at a later date, and then buy more further down the line, it will affect your average price
here i am talking about intraday. The main post is about intraday. For F&O, averages change but not for intraday
Aditya, the OP sold fut , then at a later date bought sm intraday, so FIFO applies, it will b bought from what was sold.
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