Carlyle is considering expanding its 32.4% holding after valuations for the housing finance company turned attractive. : Carlyle Group LP is seeking to double its holding in Indian mortgage lender PNB Housing Finance Ltd, people familiar with the matter said, reversing an earlier attempt to pare its stake in the company. The US private-equity firm is considering buying Punjab National Bank's shares in PNB Housing, which would give it a controlling stake, the people said, asking not to be named as the information is not public.