On Monday, October 12, the SENSEX fell by 547.65 points or 0.76% to close at 71,924.68, while the NIFTY50 ended at 22,363.35, down 157.10 points or 0.70%. The decline was driven by a sell‑off in fast‑moving consumer goods and PSU banking stocks, a surge in crude oil prices, and foreign institutional investor outflow. The indices hit intraday lows of 71,676.10 for the SENSEX and 22,304.45 for the NIFTY50, with the SENSEX dropping as much as 1.1% and the NIFTY50 falling 0.96%.

Foreign institutional investors sold shares worth ₹3,568.90 crore on Friday, while domestic institutional investors bought equities worth ₹4,743.26 crore on a net basis, according to exchange data. The India VIX, the volatility gauge, surged as much as 8.1% to reach an intraday high of 15.54. These market dynamics contributed to the negative session for the benchmark indices.

On the NIFTY50, Apollo Hospitals Enterprise shares weighed down the index, closing 3.15% lower. ITC Ltd fell 3.05%, Tech Mahindra 2.85%, Larsen & Toubro 2.05%, and Max Healthcare Institute 2.02%. In contrast, Dr. Reddy's Laboratories gained 2.71%, Bajaj Auto 2.62%, Tata Motors PV 1.63%, Bharat Electronics Ltd 1.56%, and BSE Ltd 1.31%. These movements highlighted the volatility within the healthcare and automotive sectors.

The NIFTY Midcap 100 closed at 58,834.55, up 0.08% or 47.25 points. UPL Ltd led gains at 5.40%, followed by Suzlon Energy 5.24%, PB Fintech 3.46%, One 97 Communications 3.30%, and LIC Housing Finance 2.96%. Lenskart Solutions fell 3.86% after a CNBC‑TV18 report that Alpha Wave Ventures LP was considering selling a 1.6% stake, valued at ₹966 crore, with an option to sell an additional 0.7% stake worth ₹725 crore, potentially totaling ₹1,691 crore. No official confirmation was available from the company.

The NIFTY Smallcap 100 index rose 1.42% to 19,425.80, a gain of 272.10 points. Gallantt Ispat led the gains at 20%, followed by Syngene International 7.66%, Tata Chemicals 7.43%, Welspun Corp 6.35%, and Nuvama Wealth Management 6.27%. Vedanta Power dropped 2.88%, Physicswallah 2.33%, KEC International 1.93%, Sagility 1.84%, and Neuland Laboratories 1.75%. The report concludes with a disclaimer that the information is for educational purposes only and not investment advice.