LIVE Updates on Rakesh Jhunjhunwala's Death: According to the hospital, Jhunjhunwala died of a sudden cardiac arrest.

The cause of Rakesh Jhunjhunwala's death was a sudden cardiac arrest. 

He also had chronic kidney disease, was on chronic dialysis, and was doing well.

He had diabetes and had recently had an angioplasty: Breach Candy Hospital's Dr. Pratit Samdani

Jhunjhunwala had stakes in more than a dozen companies, the most valuable of which was Titan, 

 a watch and jewellery manufacturer owned by the Tata conglomerate.

Star Health, Rallis India, Escorts, Canara Bank, Indian Hotels Company, Agro Tech Foods, Nazara Technologies, and Tata Motors are among the companies in his portfolio.