← Search Journal of Finance Vol. 45 No. 2 1990 Share Markets and Portfolio Theory. Robert G. Bowman; Ray Ball; Philip Brown; F. J. Finn; R. R. Officer DOI10.2307/2328680 Volume45 Issue2 Pages699 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 ✓