Mercury Ev-Tech shares were locked at a 5% upper circuit for the fifth consecutive session on Tuesday, driven by strong buying momentum. The stock has surged over 25% in the past week and 81% in one month. This rally follows the company's announcement to acquire a 70% stake in Haitek Automotive Private Limited for ₹35 lakh, making Haitek a subsidiary. The acquisition aims to strengthen Mercury's position in West Bengal’s growing three-wheeler market. Mercury shares have delivered a multibagger return of 171% over the past year and an astounding 19,400% over three years, trading at ₹132.60 on the BSE.