Chapter 18 – Equity Valuation Models
18–11
ii. Both two-stage valuation models allow for two distinct phases of growth, an initial
finite period where the growth rate is abnormal, followed by a stable growth period that
is expected to last indefinitely. These two-stage models share the same limitations with
respect to the growth assumptions. First, there is the difficulty of defining the duration
of the extraordinary growth period. For example, a longer period of high growth will
lead to a higher valuation, and there is the temptation to assume an unrealistically long
period of extraordinary growth. Second, the assumption of a sudden shift from high
growth to lower, stable growth is unrealistic. The transformation is more likely to occur
6. a. The formula for calculating a price earnings ratio (P/E) for a stable growth firm is
the dividend payout ratio divided by the difference between the required rate of
return and the growth rate of dividends. If the P/E is calculated based on trailing
earnings (year 0), the payout ratio is increased by the growth rate. If the P/E is
calculated based on next year’s earnings (year 1), the numerator is the payout ratio.
P/E on trailing earnings:
P/E on next year’s earnings:
b. The P/E ratio is a decreasing function of riskiness; as risk increases, the P/E ratio
decreases. Increases in the riskiness of Sundanci stock would be expected to lower the
P/E ratio.
The P/E ratio is an increasing function of the growth rate of the firm; the higher the
expected growth, the higher the P/E ratio. Sundanci would command a higher P/E if
analysts increase the expected growth rate.