If significant tariffs are imposed by the new administration, companies heavily reliant on imports (e.g., Apple, which sources from China) may face higher costs, potentially leading to reduced profits and a decline in stock price.
"companies that rely heavily on Imports Also may face higher costs due to tariffs which could reduce their profits for instance Apple which sources many of their components and finished products from China they might see their stock price decline if those goods are subject to a significant tariff"