NEW YORK--(BUSINESS WIRE)--Fitch Ratings has today affirmed AllianceBernstein LP's (AB) long-term and short-term Issuer Default Ratings (IDR) at 'A+' and 'F1', respectively. The Rating Outlook is Stable. A full list of rating actions is at the end of this rating action commentary. These actions have been taken by Fitch in conjunction with a broader traditional investment manager industry review, which includes seven publicly-rated traditional investment managers. For more commentary on the broa