AIIL Authum Investment & Infrastructure Ltd Credit Rating Changes Announcement 2024 - Rating Assignment CRISIL assigned CRISIL A -/Stable rating to Authum Investment & Infrastructure Ltds long-term bank facilities up to Rs. 1000 Crore on July 26, 2024..Find Corporate Announcements for Press Releases, AGM, Insider Trading & SAST, Results and Corporate Action for Authum Investment & Infrastructure Ltd