Recent trading sessions have witnessed a nearly 7% plunge in Eicher Motors $EICHERMOT.NS shares—the steepest one-day drop since July 2023. The decline is largely driven by aggressive investments in new models by Royal Enfield, the motorcycle manufacturer under the Eicher umbrella, which have significantly affected the company's profitability. Despite record sales figures in the motorcycle segment, rising expenditures, especially during key festive periods like Diwali and Christmas, have put considerable pressure on financial performance.