Final answer:
Before the competitor's entry, the market value per share of Urban Utilities' common stock was $62.50. After the competitor entered and increased the investment risk, requiring a 10% rate of return, the market value per share decreased to $37.50.
Step-by-step explanation:
To calculate the market value per share of Urban Utilities' common stock before the competitor enters the market, we use the dividend discount model (DDM) for a no-growth stock, which is calculated as:
Market Value Per Share = Dividend Per Share / Required Rate of Return
So, Market Value Per Share = $3.75 / 0.06 = $62.50
After the competitor takes a portion of the market share, increasing investment risk and the required rate of return to 10%, the calculation becomes:
Market Value Per Share = $3.75 / 0.10 = $37.50
The presence of a competitor and increased risk led to a decrease in the stock's market value.