The collective market capitalisation of seven of India's 10 most-valued companies dipped by roughly ₹35,450 crore in the week ended December 26. SBI emerged as the biggest loser, with its market capitalisation falling by ₹12,692 crore to ₹8.92 lakh crore. M-caps of Reliance Industries, TCS, ICICI Bank, Bajaj Finance, Larsen & Toubro and LIC also faced erosion.