Most stock exchange regulators around the world reacted to the 2007-2009 crisis byimposing bans or regulatory constraints on short-selling. Short-selling restrictions wereimposed and lifted at different dates in different countries, often applied to different sets ofstocks and featured different...

Luckin Coffee was extolled as the Chinese challenger of Starbucks. However, nine months after its IPO on NASDAQ, Luckin was accused of accounting fraud but did not confessed to the allegations until two months later. This scandal caused wide concerns, not only on Luckin but also two related...

We consider whether traders are more likely to commit securities violations when trading at home, a new form of working induced by the Covid pandemic. We examine data pre- and post-Covid, during which some traders were unexpectedly forced to work at home. The data indicate the presence of both a...

This paper investigates how firm debt disproportionately impacted the stock returns of firms who were highly exposed to the economic consequences of social distancing. Specifically, I use a difference-in-difference design to causally identify the impact that higher levels of firm debt had for...

This paper proposes a practical approach to address the procyclicality of initial margin at central counterparties (CCPs) that can work even in periods of extreme stress. The approach allows CCPs to limit the speed of margin increases resulting from spikes in market volatility. To maintain the...

By employing leverage to gain more exposure to stocks when young, individuals can achieve better diversification across time. Using stock data going back to 1871, we show that early leverage combined with reduced equity exposure when older can reduce lifetime portfolio risk. For example, an...

We use a large sample of non-US banks to examine the propagation of the 2007-2009 crisis. Using both stock market and structural variables we test whether the relative incidence of the crisis was better explained by crisis models or by the VaR-type analysis of the Basel system. Consistent with...

The U.S. financial services industry grew from 4.9% of GDP in 1980 to 7.9% of GDP in 2007. A sizeable portion of the growth can be explained by rising asset management fees, which in turn were driven by increases in the valuation of tradable assets, particularly equity. Another important factor...

La crisi dell'economia americana ha forti ripercussioni non solo sui paesi europei, ma sul mondo intero; le difficoltà di altri importanti paesi, come il Giappone e l'Argentina, già gravi, sono diventate ancora più gravi per la crisi americana. I paesi del Terzo Mondo mostrano andamenti molto...

Though overall bank performance from July 2007 to December 2008 was the worst since at least the Great Depression, there is significant variation in the cross-section of stock returns of large banks across the world during that period. We use this variation to evaluate the importance of factors...