Valuation of the preferred stock sinking fund feature: a time-series approach

This study employs a time‐varying coefficient model to examine the relationship between returns on preferred stock with a sinking fund and preferred stock without a sinking fund. The results provide evidence of a major shift in the relationship between the two types of preferred stock coincident to a major change in Federal Reserve Board monetary policy. Results also show several smaller shifts at other times. The findings lend only weak support to link the announcement of a change in bookkeeping practices for insurance companies with a contemporaneous change in the relationship between the two types of preferred issues, as previous studies contended.