Gunthorpe, Deborah; Levy, Azriel - In: Review of Quantitative Finance and Accounting 7 (1996) 2, pp. 177-86
Modern portfolio theory dictates diversification among assets that are not perfectly correlated (that is, asset diversification). Professional investors, on the other hand, contend that one can simply diversify across time (that is, time diversification). The controversy of time diversification...