Before we begin, let us burst a few general myths about Valuation
Myth 1: A
Valuation is an objective search for “true value”
Truth: All
valuations are biased. The only questions are how much and in which direction.
Myth 2: A good
Valuation provides a precise estimate of value
Truth:
There are no precise valuations. In fact, the payoff to valuation is greatest
when valuation is least precise.
Myth 3: The
more quantitative the model, the better the Value
Truth:
One’s understanding of a valuation model is inversely proportional to the
number of inputs required for the model. Simpler valuation models do much
better than complex ones.
With that
behind us, there are broadly 2 approaches to Valuation of Securities
1. Discounted cashflow valuation,
relates the value of an asset to the present value of expected future cashflows
on that asset.
2. Relative valuation, estimates the
value of an asset by looking at the pricing of 'comparable' assets relative to
a common variable like earnings, cashflows, book value or sales.
The use of
valuation models in investment decisions (i.e., in decisions on which assets
are under valued and which are over valued) are based upon:
1. a perception that markets are inefficient and make mistakes in assessing value
2. an assumption about how and when these inefficiencies will get corrected
In an
efficient market, the market price is the best estimate of value. The purpose
of any valuation model is then the justification of this value.
Discounted Cash Flow Valuation
In
discounted cash flow valuation, the value of an asset is the present value of
the expected cash flows on the asset. Every asset has an intrinsic value that
can be estimated, based upon its characteristics in terms of cash flows, growth
and risk. To use discounted cash flow valuation, you need
1. to estimate the life of the asset
2. to estimate the cash flows during the life
of the asset
3. to estimate the discount rate to apply to
these cash flows to get present value
Markets are
assumed to make mistakes in pricing
assets across time, and are assumed
to correct themselves over time, as new information comes out about assets. Since
DCF valuation, done right, is based upon an asset's fundamentals, it should be less exposed to market moods and perceptions.
If good investors buy businesses,
rather than stocks (the Warren Buffet adage), discounted cash flow valuation is
the right way to think about what you are getting when you buy an asset. DCF
valuation forces you to think about the underlying
characteristics of the firm, and understand its business. If nothing else,
it brings you face to face with the assumptions you are making when you pay a
given price for an asset.
Since it is
an attempt to estimate intrinsic value, it requires
far more inputs and information than other valuation approaches. These
inputs and information are not only noisy (and difficult to estimate), but can
be manipulated by the savvy analyst
to provide the conclusion he or she wants. In an intrinsic valuation model,
there is no guarantee that anything will
emerge as under or over valued. Thus, it is possible in a DCF valuation
model, to find every stock in a market to be over valued. This can be a problem
for (1) equity research analysts, whose job it is to follow sectors and make
recommendations on the most under and over valued stocks in that sector and (2)
equity portfolio managers, who have to be fully (or close to fully) invested in
equities
This
approach is designed for use for assets (firms) that derive their value from
their capacity to generate cash flows in the future. It does make your job
easier, if the company has a history that can be used in estimating future cash
flows. It works best for investors who either have a long time horizon, allowing the market time to correct its
valuation mistakes and for price to revert to "true" value or are capable of providing the catalyst
needed to move price to value, as would be the case if you were an activist
investor or a potential acquirer of the whole firm.
Relative Valuation
The value
of any asset can be estimated by looking at how the market prices
"similar" or 'comparable" assets. The intrinsic value of an
asset is impossible (or close to impossible) to estimate. The value of an asset
is whatever the market is willing to pay for it (based upon its
characteristics). To do a relative valuation, you need
1. an identical asset, or a group of comparable or similar assets
2. a standardized measure of value (in equity, this is obtained by dividing
the price by a common variable, such as earnings or book value)
3. and if the assets are not perfectly
comparable, variables to control for
the differences
Pricing
errors made across similar or comparable assets are easier to spot, easier to
exploit and are much more quickly corrected. Relative valuation is much more likely to reflect market
perceptions and moods than discounted cash flow valuation. This can be an
advantage when it is important that the price reflect these perceptions as is
the case when the objective is to sell a security at that price today (as in
the case of an IPO) and investing on "momentum" based strategies. With
relative valuation, there will always be a significant proportion of securities
that are under valued and over valued.
Since portfolio managers are judged based upon how they perform on a relative basis (to the market and
other money managers), relative valuation is more tailored to their needs. Relative
valuation generally requires less
information than discounted cash flow valuation (especially when multiples
are used as screens).
A portfolio
that is composed of stocks which are under
valued on a relative basis may still be overvalued, even if the analysts'
judgments are right. It is just less overvalued than other securities in the
market. Relative valuation is built on the assumption
that markets are correct in the aggregate, but make mistakes on individual
securities. To the degree that markets can be over or under valued in the
aggregate, relative valuation will fail. Relative valuation may require less
information in the way in which most analysts and portfolio managers use it.
However, this is because implicit
assumptions are made about other variables (that would have been required
in a discounted cash flow valuation). To the extent that these implicit
assumptions are wrong the relative valuation will also be wrong.
This
approach is easiest to use when there are a large number of assets comparable to the one being valued, these assets are priced in a market, and
there exists some common variable
that can be used to standardize the price. This approach tends to work best for
investors who have relatively short time
horizons, are judged based upon a
relative benchmark (the market, other portfolio managers following the same
investment style etc.), and can take actions that can take advantage of the relative mispricing; for instance, a hedge
fund can buy the under valued and sell the over valued assets.
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