PT - JOURNAL ARTICLE AU - Ron Surz TI - Correcting Core AID - 10.3905/jii.2012.2.4.067 DP - 2012 Feb 29 TA - The Journal of Index Investing PG - 67--73 VI - 2 IP - 4 4099 - https://pm-research.com/content/2/4/67.short 4100 - https://pm-research.com/content/2/4/67.full AB - Core investing has been around for a long time but no one has ever questioned the meaning of “core” nor has anyone ever asked if there might be different kinds of core for different purposes. This article discusses the uses of both blend and centric core and argues for a change to common practices, namely replacing blend with centric in most applications.TOPICS: Portfolio theory, portfolio construction, in portfolio management