Shares of Reliance Industries as well as Bharti Airtel began the trade on a positive note on Wednesday after the two firms announced their partnerships with Elon Musk's SpaceX for providing high-speed internet services in India.Bharti Airtel stock opened with a gain of 5.49 pc to hit a high of Rs 1,388.25 apiece on the National Stock Exchange (NSE).Soon, it pared all gains and traded 0.77 per cent lower to Rs 1,650.10 per piece.