That company is Tenneco Clean Air India. Tenneco Clean Air: Stock Price MovementIf the name rings a bell, it may be because its November 2025 IPO was one of the year’s most oversubscribed. Understanding the business: Two segments, twelve plantsTenneco Clean Air India operates 12 manufacturing plants across the country, organised into two business segments: Clean Air & Powertrain Solutions and Advanced Ride Technologies (ART). While powertrain products provide a steady stream of OEM and aftermarket business, clean air solutions form the strategic core of the segment. Inside the suspension business: Monroe, DaVinci and half the companyIf clean air is the annuity, the suspension business is the story stock hiding inside, and it is no longer a side business.