Ather Energy Pvt, an Indian electric-scooter manufacturer, has engaged HSBC, JPMorgan, Nomura, JM Financial, and Axis Bank for its IPO, potentially in Mumbai's second half. The listing could value Ather at $2 billion, aiming to raise up to $400 million. Founded in 2013 by IIT Madras alumni, Ather raised $128 million in its latest funding round.