The book studies the nature, extent and pattern of diversification of Indian corporate sector and analyze causality between diversification and performance after controlling for endogeneity. This book has six chapters. First chapter is 'Diversification: An Introduction'. Second chapter is 'Diversification and Performance Studies: A Review of Literature'. Third chapter is 'Measuring Diversification: The Research Methodology'. Fourth chapter is 'Measurement of Nature, Extent, and Pattern of Diversification Strategy'. Fifth chapter is 'Relationship between Corporate Diversification and Firm Performance'. Sixth chapter is 'Diversification Strategies and Firm Performance: A Conclusion'.