India's broader market indices, including Mid and Smallcap, saw gains exceeding 1 percent in the final week of December 2025, outperforming main indices. This momentum was fueled by strong auto sales and a positive corporate earnings outlook. The BSE Sensex and Nifty50 both closed higher. While Domestic Institutional Investors provided significant support, Foreign Institutional Investors remained net sellers. Market breadth, however, showed a divergence, with gains concentrated in a few large-cap stocks rather than broad-based participation.