Diversification Strategy and Financial Performance of Conglomerate Firms in Nigeria

This study assesses the effect of diversification strategy on the financial performance of conglomerate firms operating in Nigeria, with reference to companies whose subsidiaries span multiple geopolitical zones. Conglomerates such as those in the manufacturing, financial services, and logistics sectors have increasingly employed diversification as a risk mitigation and growth tool. The study adopts a longitudinal descriptive design, utilizing secondary data extracted from five years of audited financial statements of eight major Nigerian conglomerates. Performance indicators examined include earnings before interest and taxes, net profit margin, and return on equity. Data were analyzed using panel regression analysis with diversification level as the key independent variable. Findings reveal a non-linear relationship between diversification and financial performance, consistent with the inverted-U hypothesis. Moderate levels of related diversification yield the highest financial returns, while excessive unrelated diversification leads to performance dilution due to managerial complexity. The study concludes that Nigerian conglomerates must strategically calibrate their diversification portfolios based on core competency alignment and market synergy potential. Recommendations include regular portfolio reviews, divestment of non-performing subsidiaries, and investment in cross-subsidiary knowledge transfer systems. Keywords: diversification strategy, financial performance, conglomerate firms, related diversification, portfolio management.