Capital Asset Pricing Model pdf

Introduction
This assignment is about the Capital Asset Pricing Model. A concept which came into use after
the famous noble laureate Mr. William Sharpe introduced it in his book called “Portfolio Theory
of Financial Markets”. Capital Asset Pricing Model is a model that tells an investor about the
risk on particular securities before investing the amount of money. Now whom wont love a
concept or an application that suggests or tells us the rate of risk and the rate of expected return
on the investment that we are going to make, hence capital asset pricing model is the one that
provides good theoretical results which is capable of influencing the decision of the investor in
case of investments (Milton, 2012). If we now talk in simpler words about CAPM then it goes
like this, ‘CAPM is nothing but a theoretical model with a formula that if applied on an
investment plan generates results. Now these results can be in the favor of the investor or against
the investor. It is then the investor who has to decide whether to go with the results or not. In
capital market there are no certainties, you can’t even predict what can happen next, this
uncertain behavior of market restricted many investors to invest their hard earned money.
However the big players of financial markets couldn’t hold this situation and they were looking
for some means of bringing in the investors, so that they can get some money, so what brought in
the confidence of the investors into the financial market was the birth of the capital asset pricing
model. This cannot be said that, ‘it is only CAPM that brought in the confidence of the investors,
long before the birth of CAPM, investors were still investing with big risks, however the birth of
CAPM just brought in the wave of confidence in the investors and even the smallest of the
investors started investing their money (Mizrach, 2014).
What CAPM is all about?
Now here in this section, we are going to discuss about what capital asset pricing model is all
about in very much detail. If we talk about what investors does, then the clear answer would be,
he is a person who invests his or others money into different securities of the market. Now it is
the responsibility of the investor to invest the money in such a way that it gives more returns and
less risk on the investments of the people (Hidek, 2011). However it needs to be understood by
us that more the risk more will be the rate of return and lesser the risk low will be the rate of
return on the investment made by the investor. CAPM capital asset pricing model has played an
significant role in the literature of finance (Giovanis, 2010). The (CAPM) model helps in
understanding the market concept price risk for evaluating the threat for a portfolio. The CAPM
manifest the balance returns rates for the entire menaced portfolio. The theory of CAPM guides
to assimilate the fluctuation of market according to CAPM the market return is not constant.
Moreover the progress of CAPM theory is based on many assumptions (Bejjani, 2009).
Hence in capital market, no matter how hard you try to scatter your investments, there will
always be the scope of risk attached to it (Ang, 2006). Suppose you as an investor have invested
into 20 kinds of different governmental and non-governmental securities and you expect that at-
least 10 out of 20 securities, will give you expected returns with no risk, then it is your mis-

conception only (Banz, 2000). In financial market there is nothing which is risk free. Yes, you
can make investments with government banks in their saving accounts, where you will get a
proper rate of return but it will be quite low, if you compare it with the rate of return of the
financial market. The only benefit you will get on your money with the government bonds or
government banks is that your money is safe and will grow on a very low rate.
Now we are going to discuss, how capital asset pricing model came into existence. As mentioned
in the introduction paragraph, the concept of capital asset pricing model was brought into
existence by the financial economist called “William Sharpe” in the year 1970. He brought this
concept in one of his book. He told that capital asset pricing model will theoretically provide all
the answers to the questions of an investor. In his model of capital asset pricing model, he
mentioned that the expected rate of return, the return which is risk free, the risk and the risk of
the market can be easily find out and on these basis the investor can actually make investments
that yields him more and more returns with lesser risks. However low risk and high returns are
just a myth (Fama, 2012). There is nothing like that in financial market till date. No investor,
economist, financial analyst has found any measure or means to bring the risk to the minimum
and the return to the maximum. Now if we talk about, how capital asset pricing model works,
then first of all we need to understand that the capital asset pricing model is nothing but a
formula that if correctly applied on an investment will give you a close or an accurate result.
Now this formula with a diagram is as under:
Ra = Rrf + [Ba x (Rm – Rrf)]
Where:
Ra= Stands for the expected return on security
Rrf= Risk Free Return
Ba= Beta of the Security
Rm= Expected return on the security

The CAPM model is used by various investors to allocate the risk on rate of returns. The model
can use for evaluating the cost of equity and it user the beta formula. The CAPM model also
helps in calculating the discount rate to which is used for investment appraisal. The capital asset
pricing model is considered as an important model in the field of financial management. It has
been advice for much financial operation. Besides this, CAPM is criticized for unrealistic
approach. The reason for criticism was the assumption on which it is based before actually using
CAPM or applying CAPM for a financial operation, one must be aware of the assumption of
CAPM on which it world and the reasons for the criticism.
Now as shown in the above image, the risk free return is the only return that one can earn from
the government bonds or securities or by depositing money in the banks. However the scope of
such savings or investments is very limited. You can earn a very limited amount of money by
investing almost all of your money. However if we talk about the financial market, where the
risks is much more but the rate of returns are not slightly but very high than the government
securities or bonds. People desiring of earning large sums never go to the banks they direct their
investments into the financial market and they make 100 from their 10.
Recent Developments in Capital Asset Pricing Model
In order to make the capital asset pricing model capable of battling with the modern time issues
of financial market, so that the investors can use the capital asset pricing model with having no
doubt in their mind about its ability of providing accurate results (Fama, 2006). The recent
developments that have been made in capital asset pricing model are as under:

 The concept of marginal utility or the concept of consumption has been introduced,
which has made the capital asset pricing model, an interesting investment method for
most of the investors in the financial markets.
 Arbitrage Pricing Theory is another alternative to the capital asset pricing model and it
won’t be wrong to say that this method has its own importance and it is gaining a wide
acceptance (Fama, 2004).
 Dynamic models have been developed as to bring in more evaluation of the investments
portfolios. In the capital asset pricing model only one parameter is required by the CAPM
to access the valuation of the investment but the development or the introduction of
dynamic models has bring in more insights for the assessment that is useful for the
investors. Dynamic models are the one that are now being used for insights information
of the investments.
 One of the noticeable developments is the introduction of the high beta shares in the
capital asset pricing model. The high beta shares are the one through which one can get
maximum of the return on his/her shares though high beta shares are considered as the
worst performers still they gives the chance to the investor to double or triples their
money if they wish to.
 The capital asset pricing model was initially developed or introduced by “Harry
Markowitz” but his model was not suitable or was not that much investor friendly, many
improvements were done and finally the accepted model was of the Mr. Sharpe. Till date
developments and improvements are being done on this model (Mona., 2016).
Benefits & Drawbacks of Capital Asset Pricing Model
Capital asset pricing model has its own benefits and drawback. First we will discuss about the
disadvantages of CAPM. CAPM has numerous limitation which needs to accessed before
application of the model
 Assigning values: Before the application of CAPM value should be assigned to risk free
rate of return the returns from the market when the rate of return is not constant .it
changes on every day basis at that time the investment should be made in short time
investments for less risk. In case of ERP market givens the return which is actually a sum
of capital gains and dividend field for short team period it is not useful it can came crash
in the price of shares so for better returns the long term values should be taken. Beta
values are being calculated regularly because the value of beta is very fluctuating and
keeps on changing time by time.
 No taxation: There is on transaction cost ,no divided tax on capital gain tax
 Availability of information: All the information is very easily accessible for the
investors.

 Based on old theory: The theory was given by William Sharpe in 1964 as factor model.
It should be altered according to the latest requirements.
It is not that the CAPM theory is only based on limitation it has same good benefits as well
 Simple and easy: The theory and CAPM is very simple and easy to understand it can be
used by anyone such as investors or financial managers.
 Diversified portfolio: Assumption which includes diversified portfolio held by the
investors is very relatable.
 Systematic risk: Due to diversified portfolio unsystematic risk has been removed
 Reliable method: The CAPM method is reliable. It effectively calculates of the risk.
Conclusion
After going through all the facts and information about the capital asset pricing model, a detailed
conclusion has been provided here. Capital asset pricing model is no doubt earning a good name
amongst the economists or the investors. It is useful too while calculating the expected rate of
returns on riskier investments. The recent developments in the capital asset pricing model shows
that it is now gaining attention and acceptance at a wide scale, however it is still to be loved by
everyone. Early in the year 1980, the capital asset pricing model received much criticism and it
was tested by few economists. The outcome of applying it on the investments didn’t brought out
any noticeable result, which further proved that the capital asset pricing model does not provides
any accurate result. However, here the thing worth mentioning is that most of the economists
find capital asset pricing model as a useful base for investments, though it does not provide any
full proof results but it does provides some guidelines for the investments that proves out to be
useful for the investor. All in all the final conclusion about capital asset pricing model is that,
despite of having much criticism, the capital asset pricing model provides not an accurate but a
better understanding and results about the returns and risk of an investment and it can be used
but keeping certain things in mind.

Bibliography
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Bejjani, L., 2009. Financial Risk Management: Testing the CAPM of Citigroup Stocks. New York: American
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Fama, E., 2004. The Capital Asset Pricing Model: Theory and Evidence. JOURNAL OF ECONOMIC
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Economics, 105(3), pp., 457 - 472.
Giovanis, E., 2010. Application of Capital Asset Pricing (CAPM) and Arbitrage Pricing. Germany.
Hidek, I.i., 2011. Equilibrium of Asset Pricing Model.
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Mizrach, B., 2014. Testing the CAPM & 25 Portfolios.
Mona., E., 2016. The Capital Asset Pricing Model: An Overview of the Theory. International Journal of
Economics and Finance , 7(1).