Sensex, Nifty Soar on Global Cues, Auto Rally; Key Factors Revealed

• Sensex surged 573.41 points to 85,762.01, Nifty gained 182 points to 26,328.55 on January 2.
• Rally driven by positive global markets and strong buying in heavyweight stocks like Reliance Industries.
• Consistent buying by Domestic Institutional Investors (DIIs) provided crucial market support.
• Rupee strengthened against the US dollar; Nifty Auto index extended gains for the fourth session.
• Mahindra & Mahindra and Maruti Suzuki led auto sector gains with strong December sales, pushing passenger vehicle sales to a record 45.5 lakh units in 2025.

Why It Matters: Global cues, DII support, and a strong auto sector rally fueled Sensex and Nifty's significant gains.