The Quick Estimate of the Index of Industrial Production (IIP) is released on the 28th of every month, or the next working day when the 28th is a holiday. The index is based on data supplied by source agencies, which in turn receive information from producing units. These initial estimates are revised in subsequent releases as per the IIP revision policy. For October 2025, industrial output grew by 0.4 per cent, compared with 4.0 per cent in September 2025. The slowdown is largely attributed to fewer working days due to several major festivals, including Dussehra, Diwali and Chhath. Sector-wise performance showed mixed trends. Mining output fell by 1.8 per cent, manufacturing grew by 1.8 per cent, and electricity generation declined sharply by 6.9 per cent, reflecting lower seasonal demand due to extended rainfall and cooler temperatures across many States and Union Territories. The overall Quick Estimate of the IIP for October 2025 stands at 150.9, marginally higher than 150.3 recorded in October 2024. Sectoral indices for the month were 126.2 for Mining, 151.1 for Manufacturing and 193.4 for Electricity. Within manufacturing, 9 of the 23 industry groups at the two-digit NIC level registered positive growth. The strongest contributors were: • Manufacture of basic metals (6.6 per cent) • Manufacture of coke and refined petroleum products (6.2 per cent) • Manufacture of motor vehicles, trailers and semi-trailers (5.8 per cent) Key items driving growth included HR coils and mild-steel sheets, alloy-steel flat products and MS slabs in basic metals; diesel, petrol and hard coke in refined petroleum products; and auto components, passenger cars and commercial vehicles in the motor-vehicles category. As per use-based classification, the October 2025 indices were: • Primary Goods: 148.9 • Capital Goods: 111.8 • Intermediate Goods: 166.5 • Infrastructure/Construction Goods: 197.2 • Consumer Durables: 129.2 • Consumer Non-Durables: 139.9 The corresponding growth rates over October 2024 were: • Primary Goods: –0.6 per cent • Capital Goods: 2.4 per cent • Intermediate Goods: 0.9 per cent • Infrastructure/Construction Goods: 7.1 per cent • Consumer Durables: –0.5 per cent • Consumer Non-Durables: –4.4 per cent Based on this classification, the top positive contributors to overall IIP growth were Infrastructure/Construction Goods, Intermediate Goods and Capital Goods. The October 2025 Quick Estimates and the finalised September 2025 figures were compiled at weighted response rates of 87.99 per cent and 92.81 per cent, respectively. Detailed sectoral, industry-level and use-based IIP data for October 2025 are provided in Statements I, II and III, while Statement IV offers 13-month comparative indices for users tracking industrial trends. The IIP for November 2025 will be released on Monday, 29 December 2025.