Moody's cut Goldman Sachs ratings one notch to "A1"

NEW YORK, Dec 16 (Reuters) - Moody's Investors Service cut Goldman Sachs' (GS.N) ratings by one notch on Tuesday due to the firm's vulnerabilities to the global credit crisis.

Moody's cut the firm's long-term debt ratings to "A1," the fifth highest rating, from "Aa3," excluding FDIC-guaranteed debt. The outlook remains negative, which means another cut is likely in 12 months to 18 months. (Reporting by Walden Siew)