Finding diamonds in the rough: Analysts’ selective following of loss‐reporting firms
研究发现分析师对亏损企业的跟踪比盈利企业更具选择性，异常跟踪能更好预测亏损企业的未来业绩，但市场未充分利用该信息，投资者可据此获得超额收益。
Abstract Investors face greater difficulty valuing loss‐reporting than profit‐reporting firms: losses may be due to very different reasons (e.g., poor operating performance or investments in intangibles, and financial accounting information is of more limited use for valuing loss‐making firms than profit‐making firms. Because of increased uncertainty about loss firms’ future financial and business viability, we hypothesize that financial analysts will be more selective when choosing to follow loss firms than profit firms, with the result that “abnormal” analyst following will be more informative to investors regarding the future performance of loss firms than profit firms. Consistent with this prediction, we find that abnormal analyst coverage is useful for predicting firms’ future prospects, and is more strongly associated with future performance (stock returns and ROA) for loss firms than for profit firms. The market, however, does not seem to use this useful information when pricing loss firms: for loss firms a portfolio investment strategy based upon abnormal analyst following can generate positive excess returns over 1‐ to 3‐year holding periods. These results are stronger for persistent‐loss firms than for occasional‐loss firms. We conclude that abnormal analyst following contains useful information about firms’ future prospects, and even more so for loss firms than for profit firms.