Trump Tariffs: US President Donald Trumps exorbitant reciprocal tariffs wreaked havoc in stock markets across the global this past week and the Indian stock market was no exception as the market valuation of nine of the country top 10 most valued firms-- including Mukesh Ambani-owned Reliance Narayana Murthy-led Infosys and Tata Groups TCS-- tanked by a staggering Rs 294000 crore. According to market data Tata Consultancy Services (TCS) Reliance Industries Limited (RIL) the oil-to-telecom conglomerate owned by Asias richest man Mukesh Ambani Narayana Murthy-led Infosys emerged as the biggest laggards during the trade week their market capitalization (mcap) plummeting by Rs 1.10 lakh Rs 95000 crore and Rs 49000 crore respectively. TCS Reliance Infosys biggest laggards The mcap of Tata Groups TCS Indias largest IT services firm fell by Rs 110351.67 crore settling at Rs 1193769.89 crore at the end of the trade week. TCS stocks continued dip by around 7% throughout the week and closed at Rs 3304.85 apiece on Friday slipping 2.89%. Mukesh Ambanis RIL emerged as the second-biggest laggard losing a whopping Rs 95132.58 crore of its market valuation which now stands at Rs 1630244.96 crore. RIL shares slipped nearly 6% percent during the week closing Rs 1205.90 on Friday a dip of 3.43%. Similarly the market value of billionaire Narayana Murthy-led IT giant Infosys tanked by Rs 49050.04 crore crashing to Rs 603178.45 crore at the end of the week. Nine of Indias top 10 lose mcap The trend was witnessed among nine of Indias top most valued companies with the mcap of Bajaj Finance falling Rs 14127.07 crore to Rs 540588.05 crore ICICI Bank fell Rs 9503.66 crore to Rs 943264.95 crore HDFC Banks market valuation crashed by Rs 8800.05 crore to Rs 1390408.68 crore while the market cap of HUL plummeted  Rs 3500.89 crore to Rs 527354.01 crore. Airtel only gainer in disastrous trade week While the trade week proved horrendous for the rest of Indias most-valued firms Sunil Mittal-led Bharti Airtel emerged as the only gainer its mcap surging by 7013.59 crores to settle at Rs 994019.51 crore. Amid Trumps announcement of reciprocal tariffs BSE Sensex fell by 2050.23 points or 2.64 while Nifty tanked 614.8 points (2.61 percent) according to market. Meanwhile despite the rout Mukesh Ambanis Reliance Industries remains Indias most-valued firm followed by HDFC Bank TCS Bharti Airtel ICICI Bank State Bank of India Infosys Bajaj Finance Hindustan Unilever and ITC.