Shares of Tata Steel fell by 2.51 per cent, Tata Power lost 1.5 per cent, Tata Consultancy Services slipped 1.20 per cent and Tata Motors went down by 1.07 per cent on BSE.
The market valuation of TCS declined by Rs 5,753.3 crore to Rs 4,72,636.70 crore, while Tata Motors lost Rs 2,432.01 crore to Rs 1,58,990.99 crore.
Shares of Tata Sponge Iron dropped by 3.04 per cent, Tata Coffee declined by 2.63 per cent, Tata Global Beverages (2.47 per cent) and Tata Communications (2.26 per cent).
Tata Chemicals fell by 2.09 per cent and Tata Elxsi shed 1.40 per cent.
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Together all these firms lost Rs 10,688.51 crore in market capitalisation.
During the morning trading session these stocks had lost up to 4.2 per cent.
"What would provide reassurance to the market is the fact that Ratan Tata is back in saddle as the interim Chairman as also the tight deadline of four months given to the selection committee by the Board of Tata Sons. After the initial wobble the group's shares should stabilize in my view," said Ajay Bodke, CEO & Chief Portfolio Manager PMS, Prabhudas Lilladher.
Mistry's family firm Shapoorji Pallonji Group has 18.4 per cent in Tata Sons.
In the surprise development, the board of Tata Sons, where 66 per cent shares are held by philanthropic trusts endowed by members of the Tata family, ousted Chairman Mistry, saying it was acting "for the long-term interest" of the firm.
Tata Group currently commands a listed market capitalisation of over USD 125 billion (close to Rs 8.5 lakh crore), with the software giant TCS alone commanding a market value of Rs 4,72,636.70 crore.
In the stock market, the BSE benchmark Sensex too fell by 87.66 points to end at 28,091.42.
"The market languished in a negative zone due to unfavorable winds from earnings and ambiguity over Tata Group issue," said Vinod Nair, Head of Research, Geojit BNP Paribas Financial Services Ltd.
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