Top 3 stocks to buy this week: Union Bank, Ather Energy, Laurus Labs by market expert; check stop-loss, target price

Indian benchmarks rose to their highest levels in over eight months, with the Nifty gaining 0.23% and Sensex 0.13%, as crude prices eased. Markets close Tuesday for Diwali. Analyst Chandan Taparia recommended Union Bank of India, Ather Energy and Laurus Labs, citing bullish technical signals.