Stock valuation or Equity valuation is a way of assessing the
fair value of a stock/security. There are many methods for Stock
Valuation viz. Discounted Cash Flow (DCF), Relative Valuation,
Balance sheet methods etc.
These methods are helpful in setting up a generally acceptable
fair value for the stocks or the company and can be also used in
equity research through which we can identify the undervalued or
overvalued stocks. It to a certain extend can tell us the risks
associated with the stocks.
Yet, these methods has below mentioned disadvantages.
- Problems in identifying the correct
assumptions: Methods like DCF is based on finding the
valuation by projecting future cash flows and discounting it to
present value to find out the valuation which needs many
assumptions like assuming the growthrate of the company, cost of
capital etc. Hence identifying an accurate parameter will be
difficult and due to this valuation tends to go in a range rather
than an exact number.
- Dependend on market conditions: Methods like
Relative valuation uses the current market condition like EBITDA
multiple for valuing the company. This wont consider the entire
risk of the company rather consider only the current performance of
the company while valuation.
- Different methods provide different value of the
company, which make an analyst difficult in choosing which
value to follow. It gets even more difficult if each method results
in a different value, and analysts must decide which value to
follow. For example, in case of a start-up as per book value
method, equity value will be low as it is unstable, but it can have
good valuation as per DCF because it is in the high growth stage
and project good future cash flows.
- Stock valuation methods ignores intangible
assets of the company while valuing the stocks. Intangible
assets such as brand loyalty, customer satisfaction, patent rights
etc which can make significant impact for a company in terms of
future growth are ignored.