India, Oct. 26 -- CareEdge Global Ratings has raised the outlook on Muthoot Microfin (MML) from 'Stable' to 'Positive', reflecting the improvement in its asset quality and operating performance. The agency has reaffirmed the company's long-term foreign currency rating at 'CareEdge BB-'.The latest outlook revision relates to MML's USD 50 million external commercial borrowings (ECBs), comprising USD 15 million in existing borrowings, including its ECB listed in GIFT City, and USD 35 million in proposed borrowings.MML was the first microfinance institution to receive a global rating from CareEdge Global Ratings.This follows CRISIL Ratings' upgrade of MML's long-term bank loan facilities and non-convertible debentures (NCDs) to 'Crisil AA-/Stab...