Answer:
200
Explanation:
Base on the scenario been described in the question, the position required if the portfolio has a beta 1 is been calculated as follows .
number of contracts required is
Number of contract =10,000,000/(500×100)
Number of contract =10,000,000/50,000
Number of contract =200.
A long put position is needed because the contracts must provide a positive payoff when the market reduces.