The fundamental notion of present value says that any weight charged in the future is worthless today since its immediate availability has a cost. The alternative valuation of shares through Price Earning is also affected by the inflation rate, risk, and growth. If the growth rate is highly variable, the dividend valuation model is ineffective.

1. Is it possible to design a portfolio (portfolio) with variance equal to zero? What would the requirements be?
2. Would you accept a return lower than the Risk-Free Rate for investing in a stock with a negative beta?