PT - JOURNAL ARTICLE AU - Bruce, Brian R. TI - Editor’s Letter AID - 10.3905/jii.2016.6.4.002 DP - 2016 Feb 29 TA - The Journal of Index Investing PG - 2 VI - 6 IP - 4 4099 - http://jii.pm-research.com/content/6/4/2.short 4100 - http://jii.pm-research.com/content/6/4/2.full