The iBoxx € Corporates Senior is designed to measure the performance of investment grade, EUR-denominated senior corporate debt. The index includes fixed-rate bonds with a minimum amount outstanding of EUR 500 million for EUR-issued bonds and EUR 1 billion for legacy currency bonds. Securities must have remaining time to maturity of at least one year at rebalancing and must have predetermined cash flows, excluding retail bonds, private placements, floating rate notes, convertible bonds from non-financial issuers and CDOs.