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In this research the relationship between institutional ownership and profit sharing policy with price efficiency and fluctuation in Tehran's stock exchange is studied. Data extraction is done by Rahavard-Novin software and research data analyze is also done by E-views software. research result indicates that there is a significant relationship between institutional ownership and stock price fluctuation in accepted firms at Tehran's stock exchange is approved and the main hypothesis is rejected, and there is a significant relationship between institutional ownership and stock returns in accepted firms at Tehran's stock exchange is approved and the main hypothesis is rejected and also the existence of a significant relationship between institutional ownership and profit sharing returns in accepted firms at Tehran's stock exchange is rejected and the main hypothesis is approved. Keywords: Institutional Ownership, Shared Dividend Policy, Stock Return, Stock Price Volatility JEL Classifications: E44, G23