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Latest updates from Index Services at Northern Trust

January 15, 2020

The Northern Trust Index Services group will be amending the methodology used for the Northern Trust Investment Grade US Corporate Bond Index, to update the eligible maturity band to "a final maturity of at least one year and up to (but not including) ten years". This language replaces the current rule of "a final maturity of at least two years and up to (but not including) ten years." In addition, the exclusion for fixed to floating rate capital securities (hybrids) based on the years to conversion were also updated in line with this one to ten year maturity band change.

The new methodology will become effective at the time of the March 2020 reconstitutions. For any questions about this methodology change, please email us directly at

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