This study examines the impact of firms' environmental, social and governance (ESG) initiatives on financial performance. It also compares the valuation effects of corporate social performance initiatives in developed and emerging market firms. The study was based on ESG ranking scores in the Thomson Reuters database, and the sample comprised 1317 emerging market firms and 3569 developed market firms. In comparison with developed market firms, emerging market firms had higher ESG combined scores, ESG Controversy scores, category scores of resources use, workforce, human rights and corporate social responsibility strategy scores. This study finds that stakeholder initiatives positively impact valuation effects, based on all sample results. Firm-generated controversies may decrease valuation effects in the stock market. Results indicated that ESG initiatives have a significant positive to the firm performance. The presence of independent board members and ownership by investors is a positive determinant for value creation. The adoption of best practice corporate governance principles is an important determinant of the valuation of firms. Firms' propensity to use defence mechanisms decreases valuation effects. Developed market firms received positive valuation effects due to ESG initiatives.Sustainability 2020, 12, 26 2 of 21 pollution abatement, which would lead to value creation in the form of improved productivity, corporate reputation and market share. The stakeholder theory assumes much significance to define the appropriate casual relationships between CSP and CFP [4,5]. The trade-off hypothesis indicates that resource allocation aimed at achieving social goals may add to the costs for the firms and prevent profit maximisation. Traditional theorists indicated that CSP and CFP are negatively related [6,7].In a modern context, firms must focus on profitability, growth potential and social relationships to emerge successful [8,9]. A social relationship reflects a firm's diverse commitment to its stakeholders other than profitability and growth potential. It encompasses diverse relationships, such as social, governance and environmental initiatives. The firm's investment in socially responsible behaviour, such as investments directed towards pollution reduction efforts or energy saving technologies, positively impacts financial performance.The principles of CSR indicated that firms have moral obligations towards society, which are beyond the concept of profit maximisation [10]. Firms create environmental costs through their business operations and are responsible for alleviating these problems [11]. Firms' socially responsible actions can serve business interests and enhance financial performance [12,13].Social responsibility has great significance and relevance in academia and business management. About 50% of the global institutional asset base was managed by Principles for Responsible Investment signatories, demonstrating the commitment of financial markets towards the adoption of ESG criteria for investment de...