Hindustan Zinc (NSE: HINDZINC), Vedanta (NSE: VEDL), Reliance Industries (NSE: RELIANCE), Vodafone Idea (NSE: IDEA), and Airtel (NSE: BHARTIARTL) are among the stocks that may remain in focus to buy or sell on August 19. On August 18, Indian equity indices ended on a positive note with Nifty above 24,850.