The composition of the Fingroup Fund portfolio is as follows: Stock Shares Price A 250,000 $ 35 B 350,000 40 C 450,000 15 D 650,000 20 If during the year the portfolio manager sells all of the holdings of stock D and replaces it with 260,000 shares of stock E at $40 per share and 260,000 shares of stock F at $10 per share, what is the portfolio turnover rate?