A strong relationship between the firms' financial ratios and their security characteristics is observed when canonical correlation analysis is applied instead of trying to measure the volatile relationships between the individual variables. It is seen from a sample of 32 firms for 1974-84 that the key ratios in the relationship differ over time. Cash-based ratios are incrementally significant, though. To establish a relationship between the financial ratios and the security characteristics a limited number of temporally varying key ratios is sufficient. Finally, it is observed that in assessing security characteristics the expected returns and beta are sufficient.
Higher moments have no incremental significance.