Suppose you buy 100 shares of stock XYZ at $10 a share with a
margin of 50%. You also buy 200 shares of stock ABC at $50 a share
with an 60% margin. You are very sure that, in six month, the price
of the first stock would be $15 because you got insider
information, but you are not so sure about the price of the second
stock. Suppose you want to achieve a 20% return from your
portfolio, then...