Innovative Index Design
The iBoxx iShares $ Corporate Bond Indices are the latest addition to the indices that comprise the liquid S&P Dow Jones Indices fixed income tradable ecosystem. These groundbreaking indices were designed to be a suitable basis for USD corporate bond index futures, which didn’t exist prior to the formation of these indices and create easier market access for a wide variety of investors.
The two indices designed to underlie futures are the iBoxx iShares $ High Yield Corporate Bond Index (iBoxx iShares $ HY Corp Bond Index) and the iBoxx iShares $ Investment Grade Corporate Bond Index (iBoxx iShares $ IG Corp Bond Index). As part of the iBoxx index series, these indices offer broad coverage of the USD high yield and investment grade liquid bond universes, providing investors with objective benchmarks against which they can measure and execute their market views.
We’ll summarize the iBoxx iShares $ HY Corp Bond Index construction methodology to highlight the unique process by which the iBoxx iShares $ Corporate Bond Indices are composed. The process is identical for the investment grade index; however, the inputs reference the equivalent investment grade indices.
The iBoxx iShares $ HY Corp Bond Index is rebalanced monthly to match the holdings of the iShares iBoxx $ High Yield Corporate Bond ETF (HYG ETF). Specifically, the index cross-references the iBoxx USD High Yield Developed Markets Index (iBoxx $ HY DM Index) and the HYG ETF portfolio to form the index. Then, the characteristics of the index universe are compared against the iBoxx $ Liquid High Yield Index (iBoxx $ LQ HY Index), the benchmark of the HYG ETF, to ensure the new index characteristics closely match the HYG ETF benchmark characteristics within defined bounds. The characteristics are compared across ratings, sectors, duration, yield, bond count and bonds in common.