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This paper examines the hypothesis that CD issue yields of Australian banks incorporate a premium that reflects bank risk. Our empirical analysis of Australian banks’ CD premiums suggests the data is consistent with this hypothesis and hence supports the view that CD holders do not perceive their deposits as being risk‐free. Nor do we find any statistically significant difference between the premiums paid by private banks with implicit deposit insurance vis‐a‐vis those paid by government‐owned banks with explicit government guarantees.

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A minimum norm quadratic (MINQU-) type of OLS estimator is derived. The estimator is used to test if the betas of the single factor market (SFM) model are random for a sample of utilities for two contiguous periods. The estimated betas for individual utilities vary considerably over time. The statistical significance of such nonstationarity depends on both the utilities and period studied. The relative reduction in the mean square error (MSE) from using a GLS (and not OLS) estimator of beta, when beta is purely random, can be substantial for some utilities but is modest on average.