PT - JOURNAL ARTICLE AU - Martin Fridson TI - Invited Editorial Comment AID - 10.3905/jpm.2012.38.2.001 DP - 2012 Jan 31 TA - The Journal of Portfolio Management PG - 1--3 VI - 38 IP - 2 4099 - https://pm-research.com/content/38/2/1.short 4100 - https://pm-research.com/content/38/2/1.full