This story belongs to the Fortune India Magazine December 2025 issue.
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WHEN S.N. SUBRAHMANYAN took charge as chief executive and managing director of Larsen & Toubro (L&T) on July 1, 2017, investors had one persistent concern: despite being India’s largest engineering and infrastructure conglomerate with operations across more than 80 businesses, L&T’s profits did not match its massive scale.
The reason was clear: infrastructure construction, the company’s mainstay, was a low-margin business. In FY18, L&T posted consolidated revenues of ₹1.19 lakh crore on the back of an order book of ₹2.63 lakh crore, but its profit after tax (PAT) was ₹7,370 crore — a modest return for such scale.