Tata Motors, Hero MotoCorp, Bharti Airtel, Siemens, Bharti Hexacom, Aditya Birla Capital, Cipla, GAIL India, GlaxoSmithKline Pharmaceuticals, Garden Reach Shipbuilders & Engineers, ITD Cementation India, Jubilant Ingrevia, Metropolis Healthcare, Max Financial Services, Suven Life Sciences, VIP Industries, and VST Tillers Tractors will announce their quarterly earnings scorecard on May 13.