Extracting Sustainable Earnings from Profit Margins
49 Pages Posted: 24 Oct 2012
Date Written: October 23, 2012
Abstract
Revenues and expenses are fundamentally proportional to one another, but are likely to be disproportionally affected by transitory items or economic shocks. We build on this observation and propose a new measure of sustainable earnings based on deviations from normal profit margins. While some other sustainable earnings metrics attempt to identify transitory components on a line-by-line basis, our measure, referred to as the intensity of core earnings, uses ratio analysis to extract the transitory portion of earnings from all line items. We find that the intensity of core earnings, as measured here, is positively associated with earnings persistence, better earnings predictability, and stronger market reaction to unexpected earnings. We also find that our measure is positively associated with post-earnings announcement excess stock returns. Comparing our measure with an accrual-based measure of earnings quality, we find that, in general, the two metrics provide distinct incremental information relative to one another and in some instances our measure is better than an accrual-based measure in assessing earnings quality.
Keywords: Earnings Quality, Sustainable Earnings, Profit Margins, Ratio Analysis, Earnings Persistence, Analysts Forecast
JEL Classification: G14, M41
Suggested Citation: Suggested Citation
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