Reviewing the definition and measurement of speculative bubbles in context of contagion, this paper analyses the DotCom bubble in American and European equity markets using the dynamic conditional correlation (DCC) model proposed as on one hand as an econometrics explanation and on the other...

We investigate asset returns using the concept of beta herding, which measures cross-sectional variations in betas induced by investors whose beliefs about the market are biased due to changes in confidence or sentiment. Overconfidence or optimistic sentiment causes beta herding (compression of...

Yes. By observing return reversals following unexpected responses to noisy public signals about market-wide common factors, we show that investors in the US equity market tend to over-respond to public signals for mature firms that are relatively easy to price—old, large, and dividend-paying...

We investigate the effects of arbitrageurs' behavioral biases on cross-sectional equity returns. We find evidence that profits of equity market neutral hedge portfolios are positively affected by overconfidence, the effects of which are not subsequently reversed. Further we discover that signals...