We identify the causal effects of short-selling bans on stock prices using regression discontinuity (RD). We exploit three threshold-based rules that determine a stock's short-selling eligibility on the Hong Kong Stock Exchange. Short-selling bans affect short-selling volume at all thresholds....

We use the 2016 U.S. SEC tick size pilot to examine the effects of an increase in the minimum price variation on limit order book liquidity in NASDAQ-listed stocks on the NASDAQ exchange. For treatment stocks with an average pre-pilot quoted spread less than $0.05, the tick size increase is...

In response to the sharp decline in prices of financial stocks in the fall of 2008, regulators in a number of countries banned short selling of particular stocks and industries. Evidence suggests that these bans did little to stop the slide in stock prices, but significantly increased costs of...

Systemic risk propagated through over-the-counter derivatives can best be managed by a public-private central counterparty clearing house (CCP). Though private CCPs provide an adequate amount of clearing's private good, they do not provide the socially optimal level of the public good or impure...

In summer 2007, the Securities and Exchange Commission (SEC) published an online tool with information on firms doing business in State Sponsor of Terrorism countries. We take sides with those arguing that for moral reasons, investors will have traded on the information provided in the tool by...

Central Counterparties (CCPs) are widely promoted as a requirement for safe banking with little dissent except on technical grounds (such as proliferation of CCPs). Whilst CCPs can have major operational positives, we argue that CCPs have many of the business characteristics of Rating Agencies,...

Using the Tick-Size Pilot Program, we show that tick-size increases in treated firms cause a significant reduction in stock price crash risk. Earnings management and algorithmic trading are the two key channels of impact. We also show that sophisticated investors such as short-sellers are...