This study investigates the effects of market concentration and diversification on firms’ performance in the case of the Indian chemical industry. The findings indicate a positive relationship between market concentration and performance measured in terms productivity and profitability. However, firm diversification shows a negative impact on a firm’s productivity and but positive impact on its profitability. The study also reveals that market concentration outperformed in comparison to the diversification strategy for the Indian chemical industry. © 2022 SAGE Publications.