NEW YORK--(BUSINESS WIRE)--Fitch Ratings has affirmed 16 classes of J.P. Morgan Chase Bank, N.A. Commercial Mortgage Securities Trust, series 2014-C21 commercial mortgage pass-through certificates. A detailed list of rating actions follows at the end of this press release. KEY RATING DRIVERS The affirmations are the result of stable performance of the underlying pool since issuance. The pool's aggregate principal balance has been reduced by 0.35% to $1.26 billion from $1.26 billion at issuance.