Cummins India shares plunged 15% to ₹4,037 on Thursday after reporting a 19% YoY decline in Q2 FY27 net profit to ₹507 crore from ₹622 crore. Domestic sales increased 5% to ₹2,692 crore, while exports rose 2% to ₹555 crore. Higher commodity and freight costs, alongside an unfavourable product mix, weighed on profitability.