We report the results of an experiment that shows that investors' earnings‐ and investment‐related judgments are jointly influenced by their investment position (long versus short), the news valence of guidance issued by management, and the amount of ambiguity in the guidance. Prior research indicates that guidance form (point versus range) has no effect on investors' earnings estimates made in reaction to management guidance. We extend this research by showing that guidance form matters, conditional on investment position and news valence. Similarly, prior research indicates that investors who hold long (short) positions in a stock are more optimistic (pessimistic) about the company's prospects. We extend this research by showing that the effect of investment position documented in prior studies is conditional on news valence and guidance form. We contribute to prior literature on the effects of investment position and guidance form by delineating boundary conditions for each of these effects.

In this study, we investigate underlying mechanisms for the effects of management guidance forms on investors' judgments. We do so by comparing effects of point and range guidance with those associated with a hybrid management guidance form that combines the attributes of both point and range guidance. With respect to investors' earnings reestimates made after actual earnings announcements, we find that both the number and type of benchmarks associated with the guidance forms matter. High-knowledge investors use both primary (explicitly stated) and secondary (implicitly stated) benchmarks, whereas low-knowledge investors attend only to primary benchmarks. We also find that investors have greater confidence in their earnings estimates when management guidance explicitly provides best estimates.