NSE Report what is it

NSE has a report = “Client position greater than 3% of MWPL”

How can the report be used in analysis of a stock price point?

NSE has position wide limits, this is to prevent any one individual or entity cornering the market. The report states that the client has greater than 3% of market wide position limit (MWPL).
Check this - https://www.nseindia.com/products/content/derivatives/equities/fo.htm

You will have to backtest this (which I think is hard) before figuring out if the report is of any use.