POLL-Wall Street sees Fed announcing balance sheet shrinkage in September

NEW YORK, June 14 (Reuters) - Wall Streets top banks pulled forward their expectations for the Federal Reserve to announce when it will begin reducing its $4.5 trillion bond portfolio to as early September after the central bank offered more details on the plan on Wednesday, a Reuters poll showed.

They also see Fed policymakers raising the banks key overnight borrowing rate one more time by the end of 2017 and three times in 2018 despite growing concerns that inflation would fall short of their 2 percent goal in the foreseeable future, according to the poll.

(Reporting by Saqib Ahmed, Karen Brettell, Sinead Carew, Richard Leong, Chuck Mikolajczak, Gertrude Chavez-Dreyfuss and Caroline Valetkevitch; Editing by Meredith Mazzilli)