We examine short selling of equity exchange traded funds (ETFs) using the 2008 short-sale ban. Contrasting the previously documented contractions in bearish strategies during the ban, we find a significant increase in short sales of the largest, most liquid ETF, the S&P 500 Spider. We offer...

This study examines the cross-sectional impact of the 2008 short sale ban on the returns of U.S. financial stocks. Motivated by the large cross-sectional variation in the extent to which banned stocks suffer an illiquidity shock, we hypothesize that stocks with larger liquidity declines are...

Regulatory and media concern has focused heavily on the potentially manipulative distortion of market prices associated with naked short selling. However, naked shorting can also have beneficial effects for liquidity and pricing efficiency. We empirically investigate the impact of naked...

We study the behavior of short sellers as informed market participants and examine potential sources of their information. Using a newly available dataset with high-frequency short sales data, we find evidence of significant increases in short sales immediately prior to large insider sales, but...

Significant differences persist among the European Union and the United States in the regulation of issuers’ disclosure obligations on material corporate information. Lawmakers on either side of the Atlantic strive to pursue the same goals of market transparency and efficiency. However, in the...

Using text from 200 million pages of 13,000 US local newspapers and machine learning methods, we construct a 170-year-long measure of economic sentiment at the country and state levels, that expands existing measures in both the time series (by more than a century) and the cross-section. Our...

Even though there were numerous plausible explanations for the oil-price rally that culminated in July of 2008, there remains much uncertainty on how much to ascribe this rally to speculation, given the lack of transparency in the global oil markets. Was there excessive speculation in the oil...

The central problem for financial regulation is reducing systemic risk. Systemic risk is the risk that the failure of one significant institution can cause or significantly contribute to the failure of other significant institutions. This paper addresses the five most important policies for...

We show a significant loss in U.S. Treasury market functionality when intensive use of dealer balance sheets is needed to intermediate bond markets, as in March 2020. Although yield volatility explains most of the variation in Treasury market liquidity over time, when dealer balance sheet...

On July 31, 2017, S&P Dow Jones Indices announced it would no longer add companies with multiple share classes to its flagship S&P 500 index. This decision was designed to protect index fund investors against unequal voting rights structures, but it has already lowered investors’ returns and...