Top Stocks To Watch On 19 October: Indian equity benchmark indices plunged sharply on Wednesday due to profit-booking in banking, financial and energy stocks amid a sharp surge in global crude oil prices. Weak cues from global equity markets and persistent geopolitical concerns also impacted the risk appetite of investors, analysts said. Except Auto and Pharma, all the sectors ended in red. Bank Nifty was the biggest loser with decline of 1.2%.