The variances of pricing errors (transitory changes in prices) at the NYSE open and the close are analyzed for U.S. stocks that are traded in London or Tokyo, British and Japanese stocks that are listed on the NYSE, and U.S. stocks that are not traded abroad. The variance of pricing errors is significantly greater at the open than at the close for U.S. stocks, but not foreign stocks. These differences are explained by differences in order flow at the open and the close, a relation that is the same whether stocks are foreign or domestic and whether they trade abroad or notJournal of Economic LiteratureClassification Numbers: G10, D23.

We analyze how the anonymous trading of uninformed agents affects the characterization of security market equilibrium. We show that the degree of anonymity provided by a market alters the distribution of wealth across agents, the depth of the market, and the incentive agents have to acquire private information about a security's fundamental value. Moreover, the nature of these effects depends on the type of information about uninformed trading that is revealed to market participants. Our results have implications for sunshine trading, dual trading, brokerage relationships, automation and decentralization of markets, and firms' security listing choices. G10, L10.

We investigate the motivations and effects of financial firms’ hiring of former US financial regulatory employees. The number of top executives with regulatory experience per firm has increased 24% over 2001–15, and hiring is associated with positive average announcement returns and a salary premium. In the quarter after hire, market and balance sheet measures of firm risk decrease significantly and measures of risk management activity increase, especially for hires from prudential regulators, who directly monitor financial firm risk. The absence of this result for unregulated firms and for exogenous shocks to regulatory experience suggests that firms hire ex-employees of their regulators when they perceive a need to reduce risk, consistent with a schooling hypothesis. We find little direct evidence of quid pro quo behavior in regulatory event frequency and fines.

The number of U.S. publicly traded firms has halved in 20 years. How will this shift in ownership structure affect the economy’s externalities? Using comprehensive data on greenhouse gas emissions from 2007 to 2016, we find that independent private firms are less likely to pollute and incur EPA penalties than are public firms, and we find no differences between private sponsor-backed firms and public firms, controlling for industry, time, location, and a host of firm characteristics. Within public firms, we find a negative association between emissions and mutual fund ownership and board size, suggesting that increased oversight may decrease externalities.