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Extrapolation and bubbles
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DOI：10.1016/j.jfineco.2018.04.007.png)
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Abstract
En 中文
We present an extrapolative model of bubbles. In the model, many investors form their demand for a risky asset by weighing two signals-an average of the asset's past price changes and the asset's degree of overvaluation-and waver over time in the relative weight they put on them. The model predicts that good news about fundamentals can trigger large price bubbles, that bubbles will be accompanied by high trading volume, and that volume increases with past asset returns. We present empirical evidence that bears on some of the model's distinctive predictions. (C) 2018 Elsevier B.V. All rights reserved.
Keywords:
Bubble
Extrapolation
Volume
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