d. Because investors can easily eliminate risk through
diversification, investors should only be rewarded for
non-diversifiable risk.
Reason:
Risk and Return
- In investing, risk and return are
highly correlated. Increased potential returns on investment
usually go hand-in-hand with increased risk. Different types of
risks include project-specific risk, industry-specific risk,
competitive risk, international risk, and market risk. Return
refers to either gains and losses made from trading a
security.
- The return on an investment is
expressed as a percentage and considered a random variable that
takes any value within a given range. Several factors influence the
type of returns that investors can expect from trading in the
markets.
- Diversification allows investors to
reduce the overall risk associated with their portfolio but may
limit potential returns. Making investments in only one market
sector may, if that sector significantly outperforms the overall
market, generate superior returns, but should the sector decline
then you may experience lower returns than could have been achieved
with a broadly diversified portfolio.
- A person making an investment
expects to get some returns from the investment in the future.
However, as future is uncertain, the future expected returns too
are uncertain. It is the uncertainty associated with the returns
from an investment that introduces a risk into a project. The
expected return is the uncertain future return that a firm expects
to get from its project. The realized return, on the contrary, is
the certain return that a firm has actually earned.
- The realized return from the
project may not correspond to the expected return. This possibility
of variation of the actual return from the expected return is
termed as risk. Risk is the variability in the expected return from
a project. In other words, it is the degree of deviation from
expected return. Risk is associated with the possibility that
realized returns will be less than the returns that were expected.
So, when realizations correspond to expectations exactly, there
would be no risk.