Indian stocks closed firmly lower on Monday amid pressure from pending tariffs by the United States and a batch of pessimistic earnings results from corporate giants. The S&P BSE Sensex lost 0.7% to 80,890, and the NSE Nifty 50 fell 0.6% to 24,680, both at their lowest since June. Indian officials expressed pessimism over an imminent trade deal late last week, maintaining concerns that 26% extra duties on Indian imports are likely to be enforced starting on Friday before a deal may be reached. Losses were therefore distributed among major sectors, with tech, auto producers, and financials closing mostly lower. On the earnings front, the Kotak Mahindra Bank sank 7.3% after posting a drop in quarterly profit. Also, TCS fell nearly 2% after signaling that it will shed 2% of its workforce in the next six months.