Capital Asset Pricing Model: A Renewed Application on S&P 500 Index

John Kamwele Mutinda

University of Science and Technology of China, People’s Republic of China.

Amos Kipkorir Langat *

Pan African University Institute for Basic Sciences, Technology and Innovation-JKUAT, Kenya.

*Author to whom correspondence should be addressed.


This study employs the Capital Asset Pricing Model (CAPM) to analyze the risk-return relationship of a diversified portfolio of nine companies from technology, finance, and health sectors within the S&P 500 index sourced from Yahoo Finance. Utilizing daily stock returns data from January 01, 2019, to December 31, 2023, we estimate beta coefficients and expected returns for each company, shedding light on their performance and risk characteristics. Our findings reveal that technology and finance sector stocks generally exhibit higher beta values and expected returns compared to healthcare sector stocks. Notably, NVIDIA Corporation emerges as the most volatile stock with the highest expected return of 23.095%, reflecting its position in the innovation-driven technology sector. Conversely, healthcare sector stocks demonstrate lower beta values and expected returns. Through an in-depth analysis, we underscore the importance of balancing risk and return in portfolio construction, considering investors’ risk tolerance and objectives. While acknowledging the limitations of CAPM, our study contributes to a deeper understanding of its applicability in portfolio management and asset pricing, providing valuable insights for investors and financial practitioners.

Keywords: Capital Asset Pricing Model (CAPM), risk-return relationship, diversified portfolio, technology sector, finance sector, health sector, beta coefficients, expected returns, NVIDIA corporation, portfolio construction

How to Cite

Mutinda, John Kamwele, and Amos Kipkorir Langat. 2024. “Capital Asset Pricing Model: A Renewed Application on S&P 500 Index”. Asian Journal of Economics, Business and Accounting 24 (6):226-39.


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Rossi M. The capital asset pricing model: a critical literature review. Global Business and Economics Review. 2016;18(5):604-617.

Fama EF, French KR. The capital asset pricing model: Theory and evidence. Journal of economic perspectives. 2004;18(3):25-46.

Chen JM. The capital asset pricing model. Encyclopedia. 2021;1(3):915-933.

Douglas AA. The Validity of the Capital Asset Pricing Model in Predicting Stock Returns in Ghana’s Stock Exchange Market. ADRRI Journal of Finance, Economics and Sustainable Development. 2024;2(1 (1), January 2024-March, 2024):1-13.

Altay E, Çalgıcı S. Liquidity adjusted capital asset pricing model in an emerging market: Liquidity risk in Borsa Istanbul. Borsa Istanbul Review. 2019;19(4):297-309.

Fama EF, French KR. Testing trade-off and pecking order predictions about dividends and debt. Review of financial studies. Published online 2002:1-33.

Merton RC. An intertemporal capital asset pricing model. Econometrica: Journal of the Econometric Society. Published online 1973:867-887.

Miller MH, Scholes M. Rates of return in relation to risk: A reexamination of some recent findings. Studies in the theory of capital markets. 1972;23:47- 48.

Black F. Capital market equilibrium with restricted borrowing. The Journal of business. 1972;45(3):444-455.

Fama EF, MacBeth JD. Risk, return, and equilibrium: Empirical tests. Journal of political economy. 1973;81(3):607-636.

Andrei D, Cujean J, Wilson M. The lost capital asset pricing model. Review of Economic Studies. 2023;90(6):2703-2762.

Ross SA. The arbitrage theory of capital asset pricing. In: Handbook of the Fundamentals of Financial Decision Making: Part I. World Scientific; 2013:11-30.

Ross S, Chen NF, Roll R. Economic forces and the stock market. Journal of Business. 1986;59(3):383- 403.

Fama EF, French KR. A five-factor asset pricing model. Journal of financial economics. 2015;116(1):1-22.

Ang A, Hodrick RJ, Xing Y, Zhang X. The crosssection of volatility and expected returns. Available at SSRN 681343. Published online 2005.

Pástor L, Stambaugh RF. Liquidity risk and expected stock returns. Journal of Political economy. 2003;111(3):642-685.