Sensex down 400+ points as markets opened weak and extended losses into midday, breaching key support levels Nifty below 24,500 after starting the day under pressure from crude oil concerns and geopolitical uncertainty Markets ignore yesterday's marginal gains as oil price surge becomes the dominant narrative for traders Eicher Motors +1.19% and Dr Reddys +1.02% leading the modest blue-chip recovery from session lows Titan...