We merge the literature on downside return risk and liquidity risk and introduce the concept of extreme downside liquidity (EDL) risks. The cross-section of stock returns reflects a premium if a stock's return (liquidity) is lowest at the same time when the market liquidity (return) is lowest....

We show that limited dealer participation in the market, coupled with an informational friction resulting from high frequency trading, can induce demand for liquidity to be upward sloping and strategic complementarities in traders' liquidity consumption decisions: traders demand more liquidity...

We study the effect of ambiguity on the formation of bubbles and on the occurrence of crashes in experimental asset markets à la Smith, Suchanek, and Williams (1988). We extend their framework to an environment where the fundamental value of the asset is ambiguous. We show that, when the...

In this study, we apply a rolling window approach to wavelet-filtered (denoised) S&P500 returns (2000–2020) to obtain time varying Hurst exponents. We analyse the dynamics of the Hurst exponents by applying statistical tests (e.g., for stationarity, Gaussianity and self-similarity), a...

Today we live in a post-truth and highly digitalized era characterized by a flow of (mis-) information around the world. Identifying the impact of this information on stock markets and forecasting stock returns and volatilities has become a much more difficult task, perhaps almost impossible....

In response to the COVID-19 pandemic, the US Federal Reserve almost doubled its balance sheet by adding $3 trillion of assets (13% of GDP) in the space of three months, constituting the most aggressive unconventional monetary policy on record. We show that these actions had a substantial effect...

This paper examines the price discovery processes before and during the 2007-09 subprime and financial crisis, as well as the subsequent European sovereign crisis, for the stock, bond, and U.S. dollar/euro FX markets in the U.S. and Germany in a high-frequency setting. Based on five-second...

This paper examines the behavior of financial markets efficiency during the recent financial market crisis. Using the Hurst exponent as a criterion of market efficiency we show that level of market efficiency is different for pre-crisis and crisis periods. We also classify financial markets of...

This paper investigates the relationship between negative news in financial newspapers and stock markets in times of global crisis, such as the 2008/2009 period. We analyzed one year of front page banner headlines of three financial newspapers, such as the Wall Street Journal, Financial Times,...

We show that (electronic) designated market makers are not necessarily beneficial to the stock market during ash crashes. They actually consume liquidity when it is most needed, even if they are rewarded by the exchange to provide immediacy. This behavior exacerbates the transient price impact,...