NEW YORK--(BUSINESS WIRE)--Fitch Ratings expects some high-yield US municipal closed-end funds (CEFs) to consider participating in the recently announced $750 million offering from the Puerto Rico Aqueduct and Sewer Authority (PRASA/Issuer Default Rating: CC/Rating Watch Negative). We believe that PRASA's recent price stability relative to other Puerto Rican issuers may lure some managers. Puerto Rico bears very high speculative risks, and until a clear pathway for an orderly restructuring of d