RELATIONSHIP OF NIFTY 50 WITH RAINBOW CHILDREN’S MEDICARE LIMITED
Author Name:- Riya Choudhari
Introduction
Rainbow Children’s Medicare Limited is a leading multi-specialty pediatric and obstetrics hospital chain in India, known for providing comprehensive healthcare services for women and children. The company’s financial performance is influenced by factors such as healthcare demand, urban population growth, income levels, regulatory policies, and overall economic conditions. Since these macroeconomic factors also impact the broader stock market, the share price of Rainbow Children’s Medicare Limited tends to move in relation to benchmark indices like the Nifty 50. Studying its relationship with the Nifty 50 helps in understanding the market risk associated with the company’s stock.
Objective
To calculate the Beta of Rainbow Children’s Medicare Limited with respect to Nifty 50 and analyze its statistical significance in order to assess the systematic risk of the company’s shares.
Literature Review
Beta Analysis and Market Risk of Healthcare Stocks
Existing studies highlight beta as an important indicator of systematic risk, measuring how sensitive a stock is to overall market movements. Healthcare companies generally exhibit moderate beta values, as demand for healthcare services remains relatively stable even during economic fluctuations.
Data Collection
Historical data for Rainbow Children’s Medicare Limited and Nifty 50 was obtained from secondary market sources. The study period covers weekly data from December 2024 to November 2025. Friday closing prices were considered. Weekly returns were calculated. Nifty 50 weekly returns were treated as the independent variable (X).Rainbow Children’s Medicare Limited weekly returns were treated as the dependent variable (Y).A simple linear regression was performed by regressing Y on X.
Data Analysis
Regression Equation
Rainbow Children’s Medicare Limited (Y) = 0.997 × Nifty 50 (X) + 0.599
Regression Statistics
Beta (Slope coefficient) = 0.997
Intercept = 0.599
t-Statistic (Beta) = 26.38
p-value (Beta) = 0.000
Number of observations (N) = 48
R² = 0.938
Adjusted R² = 0.937
Interpretation
The regression results indicate a strong positive and statistically significant relationship between the weekly returns of Nifty 50 and Rainbow Children’s Medicare Limited.
A 1% change in Nifty 50 returns leads to an approximate 0.997% change in Rainbow Children’s Medicare Limited returns, indicating that the stock moves almost in line with the market.
The very high t-statistic and near-zero p-value confirm that the beta coefficient is statistically significant, showing that market movements have a strong influence on the stock’s performance.
The R² value of 0.938 suggests that nearly 94% of the variation in Rainbow Children’s Medicare Limited’s returns is explained by movements in the Nifty 50, while only 6% is influenced by company-specific factors such as hospital expansion, patient volumes, regulatory changes, and operational efficiency.
Conclusion
Rainbow Children’s Medicare Limited has a beta of approximately 1, indicating that the stock carries market-level risk.
This implies that:
The stock tends to move in line with overall market trends.
It is neither highly aggressive nor defensive in nature.
It is suitable for investors seeking exposure to the healthcare sector without taking excessive market risk.
The stock is appropriate for medium- to long-term investors who believe in India’s healthcare growth story and stable market conditions.
Reference
National Stock Exchange Of India (NSE).
Z., Kane, A. and Marcus, A.J. (2018) Investments. 11th edn. New York: McGraw-Hill Education.
Sharpe, W.F., Alexander, G.J. and Bailey, J.V. (2019) Investments. New Delhi: Prentice Hall of India.
Patel, A. and Shah, M. (2018) ‘Market risk and beta analysis of Indian equities’, GAP Bodhitaru: A Global Journal of Humanities, 1(2), pp. 36–46.
Rao, K. and Mehta, S. (2019) ‘Performance and risk analysis of healthcare companies in India’, International Journal of Business and Management Studies, 6(1), pp. 72–85.