You are holding call options on a stock. The stock's beta is 0.76, and you are concerned that the stock market is about to fall. The stock is currently selling for $16 and you hold 1 million options (i.e., you hold 10,000 contracts for 100 shares each). The option delta is 0.80. How much of the market-index portfolio must you buy or sell to hedge your market exposure? Note: Enter your answer in dollar not in millions. Market index portfolio to buy sell