First time in 13 years the company has declined payment of dividend.
Nano remains a cautionary tale of misplaced ambitions and a drag on profit.
The 30-share BSE Sensex closed down 162 points at 28,338 and the 50-share Nifty was down 67 points at 8,463.
Maruti, Hyundai & Mahindra together had 72.5% market share in year's first half.
Maurti and Hyundai recorded jump in sales in May.
This is the safest Nano Tata has ever put into production.
Several Bollywood stars and their children celebrated Father's Day by sharing pictures of their dads and posting heartwarming messages.
As other global car makers struggle in India to keep sales consistent, the Korean player has made a heady combination out of design, launches and localisation.
High price, combined with the decision to go only for diesel and position it as a crossover, resulted in its limited success
Buoyed by strong sales, Maruti Suzuki, Hyundai and Honda have scaled up their annual targets, but others are still stuck in low gear