Moody's Investors Service

 Longman Dictionary of Contemporary English Online朗文当代英语 5++LDOCE Online朗文 5++ˌMoody's Inˈvestors ˌService (also Moody's) trademark  a US company that provides information about the performance of investments and companies, giving them a rating based on combinations of letters from A to C The bonds have a Moody's AAA rating.

ˌMoody's Inˈvestors ˌServiceSyllable  

Moody's Investors Service
ˌMoody's Inˈvestors ˌService (also Moody's) trademark
a US company that provides information about the performance of investments and companies, giving them a rating based on combinations of letters from A to C:
    The bonds have a Moody's AAA rating.