Caveat Compounder: A Warning about Using the Daily CRSP Equal-Weighted Index to Compute Long-Run Excess Returns

This paper issues a warning that compounding daily returns of the Center for Research in Security Prices (CRSP) equal-weighted index can lead to surprisingly large biases. The differences between the monthly returns compounded from the daily tapes and the monthly CRSP equal-weighted indices is almost 0.43 percent per month, or 6 percent per year. This difference amounts to one-third of the average monthly return, and is large enough to reverse the conclusions of a paper using the daily tape to compute the return on the benchmark portfolio. We also investigate the sources of these biases and suggest several alternative strategies to avoid them

The going-concern market anomaly

We explore the market response to announcements of first-time going-concern (GC) audit opinions and, for a subset of these cases, their subsequent withdrawal, from 1993 to 2005. We find that the market fully responds to GC withdrawal announcements but underreacts to the GC announcements themselves, resulting in a downward drift of −14% over the one-year period subsequent to the GC opinion. This result is robust to alternative explanations documented in prior literature. However, after adjusting for transactions costs, the opportunity to earn profits by trading on this market anomaly is limited. We demonstrate that despite such clear adverse signals about the firm's continuing financial viability, this information is not being fully impounded by the market on a timely basis. Our findings differ from those of others who suggest that there is no pricing anomaly associated with GC opinions in the United States. We show that this is likely due to important issues with their research methods