Buy or sell stocks, Sept. 26 -- The key benchmark indices of the Indian stock market extended their losing streak to a fifth consecutive session on September 25, with the Nifty breaching the 24,900 level as persistent profit-taking, continuous foreign fund withdrawals, and uncertainty around US-India trade negotiations fuelled concerns of a potential Q2 GDP slowdown. At the close, the Sensex fell 555.95 points, or 0.68%, to 81,159.68, while the Nifty 50 index slipped 166.05 points, or 0.66%, to settle at 24,890.85. Sentiment was further pressured by a firming US dollar and rising crude oil prices, which amplified worries over fiscal strain and the likelihood of further foreign capital outflows.

On the sectoral front, metals edged up 0.22...