Please explain in details

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An investor has an initial margin requirement of 50% on his margin account and a maintenance margin requirement of 25%. The investor short sold 1,000 shares at $ 40 per share. What is the maximum price that the share can reach in the market before the investor receives a margin call? The difference between mutual funds and hedge funds is There is no difference since there are both managed portfolios Hedge funds are not registered with the SEC since accepts only qualified investors such as high net worth individuals and institutional investors. None of the above. The difference between mutual funds and Exchange traded funds (ETFs) is... ETFs shares are traded on exchanges all the time but mutual funds shares can be only traded at the end of the day when their net asset value is calculated. here is more variely of sharei ual funds None of the above