The Sensex index, marking its 40th anniversary, reflects India's significant market evolution from manual, inward-looking trading to a globally integrated, technology-driven ecosystem, according to SEBI Chairman Tuhin Kanta Pandey. Speaking at a BSE event, he noted the index's changing composition mirrors shifts in industry, governance, and innovation, highlighting the rise of private enterprise and the economy's increasing integration with global capital markets since its launch in 1986.