TY - JOUR T1 - Editor’s Letter JF - The Journal of Index Investing SP - 2 DO - 10.3905/jii.2016.6.4.002 VL - 6 IS - 4 AU - Brian R. Bruce Y1 - 2016/02/29 UR - https://pm-research.com/content/6/4/2.abstract N2 - ER -