← Search Journal of Finance Vol. 22 No. 3 1967 A Transition Model for Portfolio Revision Keith Smith DOI10.2307/2978895 Volume22 Issue3 Pages425 Sources semanticscholar openalex crossref Cite APA 7 MLA 9 Chicago (author–date) Harvard Elsevier Harvard (JFE, JBF…) The Accounting Review Academy of Management American Marketing Association INFORMS (Management Science) Copy citation Copied ✓