Respected madam ,
There is so many pro and cons of subsidiary companies
such as your company needs to prepare a consolidated financial statement along with a standalone financial statement..
As you said your company is a listed company, if that subsidiary is a material
subsidiary then many provisions of SEBI(LODR) are also applicable like regulation 24A.
In your case the sub. company is a private company so it will become deemed a public company.
pro are
reduce tax liabilities
reduce risk
many provisions of the Companies Act 2013, gives advantage to the company
like a company can give loan to its subsidiaries
subsidiary of subsidiary become your company's subsidiary without purchase of shares.
Thank you with regards
Swastika.