On the NSE, Nifty lost 166 points to close below the psychologically important 25K mark, at 24,891 points.According to Vinod Nair, head of research at Geojit Investments, markets extended the losing streak for the fifth straight session as investors booked profits amid persistent foreign fund outflows, and uncertainty over US-India trade talks, which is expected to dent India’s July-Sept GDP growth. “Broad-based selling prevailed in the market with heavy selling across auto, IT, pharma, and healthcare sectors, while metals gained on the back of China’s liquidity support and copper supply concerns,” Nair said.Foreign portfolio investors (FPIs) have net sold stocks worth over Rs 8,000 crore in the last five sessions, data from NSDL and BSE showed.On Thursday, investors were left poorer by about Rs 3.2 lakh crore with BSE’s market capitalisation now at Rs 457.4 lakh crore. And since the sensex’s multi-month peak at just above the 83K mark, the total loss in BSE’s market cap is now about Rs 8.4 lakh crore, data showed.The day’s slide in the sensex came mainly because of selling across sectors with TCS, Reliance Industries and ICICI Bank contributing the most to the index’s loss for Thursday. Some buying in BEL, Axis Bank and Bharti Airtel cushioned the index’s fall, but only to a limited extent.On the sectoral front, metal stocks edged up smartly while real estate, utilities, and IT stocks were among the most sold.