(Ref. Unit 13 Exercise 3) You are managing a stock portfolio that is currently worth $2 million. The beta of the portfolio is 0.9. One E-mini S\&P 500 Index futures contract covers 50 times the index value. The futures price of the S\&P 500 Index is 4,000 . If you want to hedge your stock portfolio using the S\&P 500 Index futures, how many contracts should you short