NEW YORK--(BUSINESS WIRE)--Fitch Ratings has assigned the following ratings to the Floater Certificates and Residual Certificates of the Tender Option Bond Trust series listed below: --Floater Certificates Series 2015-XM0080 'AA-/F1'; Stable Outlook; --Residual Certificates Series 2015-XM0080 'AA-'; Stable Outlook. KEY RATING DRIVERS The Long-term 'AA-'; Stable Outlook ratings assigned to the series 2015-XM0080 Floater Certificates and series 2015-XM0080 Residual Certificates are based on the r