We show that both the quoted and effective spreads increased, the quoted depth decreased, and the market quality index decreased after the implementation of Regulation NMS (Reg NMS). We also find an increase in the price impact of trades and the dispersion of the pricing error after Reg NMS. The...

We examine the effects of the short selling ban, imposed by Australian regulators in the wake of the global financial crisis, on trading of financial stocks. Unlike other developed markets, where regulators imposed short-selling restrictions for brief periods of time at the height of the...

Short sellers are routinely blamed for destabilizing stock markets by exacerbating deviations from fundamental values. In response, regulators periodically impose short sale constraints aimed at preventing excessive stock market declines. One explanation is that policy makers regard short...

On September 17, 2008, the Securities and Exchange Commission (SEC) issued an emergency order banning the shorting of 797 financial stocks. This paper studies the impact of the short selling ban on the credit derivatives market by investigating credit default swap (CDS) prices during the period...

In this paper we assess the relevance of information that credit ratings by Moody's, S&P's and Fitch convey to investors in light of financial scandals and reforms affecting the rating business. On a sample of downgrades issued on US corporate bonds by the three agencies from 1998 to 2011, we...

Between 2000 and 2003 a series of disclosure and analyst regulations curbing abusive financial reporting and analyst behavior were enacted to strengthen the information environment of U.S. capital markets. We investigate whether these regulations reduced security mispricing and increased stock...

This paper investigates the short selling of financial company stocks around the time of the SEC September 2008 short-selling ban. More specifically, this paper examines whether this short selling, mainly by hedge funds and other types of sophisticated investors, was purely speculative or...

The stated goals of the SEC are to protect investors, maintain orderly markets and facilitate capital formation. These goals can be achieved with very light regulation if, as assumed by traditional economic theory, investors process information costlessly and protect themselves from...

The short selling regulation of 2005 (regulation SHO), and its more restrictive version of 2008, was put in place to curb potentially manipulative naked short selling. However, this regulation has been criticized in the literature for reducing market quality. Contrary to other findings, I show...

Recent regulation, mandating the clearing of credit default swaps (CDS) by a Central Clearing Counterparties (CCP), has rendered it's possible failure a serious threat to global nancial stability. This work investigates the potential failure of a CCP initiated by the default of a large dealer...