This paper analyzes the presence of a speculative component during the extra ordinary upsurge in Karachi Stock Exchange. We implement cointegration tests, between 1997 and 2008, on price and dividends of various market and sectoral indices. The no bubble hypothesis could not be rejected for...

Financial markets are typically characterized by high (low) price level and low (high) volatility during boom (bust) periods, suggesting that price and volatility tend to move together with different market conditions/states. By proposing a simple heterogeneous agent model of fundamentalists and...

The principles of behavioral psychology can explain how crashes occur. In particular, the concept of "stimulus generalization" tells us that organisms tend to respond in the same way to similar stimuli. In a crash, or pre-crash, context, several stimuli - including rising prices, above-average...

We investigate the relationship between the daily release of COVID-19 related announcements, defensive government interventions, and stock market volatility, drawing upon an extended time period of one year, to independently test, confirm and iteratively improve on previous research findings. We...

This study examines the effect of the COVID-19 pandemic on the relationship between idiosyncratic volatility and expected stock returns. Using daily stock return data in the US market from the Center for Research in Security Prices (CRSP), we estimate monthly idiosyncratic volatility and...

During the global financial crisis, stressed market conditions led to skyrocketing corporate bond spreads that could not be explained by conventional modeling approaches. This paper builds on this observation and sheds light on time-variations in the relationship between systematic risk factors...

The Great Financial Crisis of 2007-09 confirmed the vital importance of advancing our understanding of macrofinancial linkages, the two-way interactions between the real economy and the financial sector. The crisis was a bitter reminder of how sharp fluctuations in asset prices, credit and...

The development of electronic and automated trading in sovereign bond markets has been accompanied by a more frequent occurrence of flash crashes, i.e., episodes of sudden and abrupt price changes that are to a large extent reversed shortly afterwards. We focus our analysis on two flash events...

This paper applies a Bayesian break method to studying the empirical time-varying relations between stock price ratios and subjective expectations across the market and 30 industry portfolios monthly from 1976 to 2020. Cash flow expectations unconditionally explain 80% of price variations since...