Experts say fears overblownETMarkets.com Pharma and auto stocks dip ahead of looming US tariffs, but experts remain optimistic for long-term growth. There is palpable fear among investors in pharma and auto stocks ahead of the April 2 deadline, when US President Donald Trump’s tariffs become effective. This is reflected in the performance of these stocks, which fell for the third consecutive session on Thursday. In early trade on Friday, the stocks again declined by up to 3%, with Nifty Auto and Nifty Pharma trading lower by 0.9% and 0.7%, respectively.