On July 1, an investor holds 100,000 shares of a certain stock. The market price is $100 per share and the beta of the stock is 1.5. The investor would like to change the beta of the stock portfolio to 1.25 using the September S&P 500 E-Mini stock index futures contract. The futures price is 4,500 and one contract is for delivery of $50 times the index. What strategy should the investor follow