The economics of conditional heteroskedasticity: Evidence from canadian and U.S. stock and futures markets

This paper provides insight into the sources of time variation and persistence in volatility by presenting new evidence concerning the price behavior of three index futures contracts and associated stock price indexes (the New York Stock Exchange Composite index, Standard and Poor's 500 index, and Toronto 35 index). Although persistence in the second moments of stock returns distribution is widely documented, the economic explanation for generalized autoregressive conditional heteroskedasticity is not established. Cross-sectional differences in measured persistence indicate that market characteristics thought to impede information flows may not play a significant role in explaining generalized autoregressive conditional heteroskedasticity effects.     

An Experimental Investigation of Asset Pricing in Segmented Markets

This article reports the results of experimental asset markets in which participants trade two assets with distinct dividend claims. Some traders are able to transact in the markets for both assets, whereas others can trade in only one market. When some are restricted from transacting in one market, the ineligible asset that cannot be traded by all commands a super risk premium. Without this premium, unrestricted investors would not hold all the available shares of the ineligible asset. In addition, we find that although unrestricted traders have the opportunity to remove all risk, few take advantage of this hedging opportunity.     

Institutional Investors, Analyst Following, and the January Anomaly

Average stock returns for small, low stock price firms are higher in January than for the rest of the year. Two explanations have received a great deal of attention: tax-loss selling and gamesmanship. This paper documents that seasonality in returns is not a phenomenon observed only for small firms' stock or those with low prices. Strong seasonality in excess returns is reported for a sample of widely followed firms. Sample firms have unusually low excess returns in January and returns adjust upward over the year. These results are consistent with the gamesmanship hypothesis, but not the tax-loss-selling hypothesis.     

Margin,Short Selling,and Lotteries in Experimental Asset Markets

The robustness of bubbles and crashes in markets for assets with finite lives is perplexing. This paper reports the results of experimental asset markets in which participants trade two assets. In some markets, price bubbles form. In these markets, traders pay higher prices for the asset with lottery characteristics (i.e., a claim on a large, unlikely payoff). However, institutional design has a significant impact on deviations in prices from fundamental values, particularly for an asset with lottery characteristics. Price run-ups and crashes are moderated when traders finance purchases of the assets themselves and are allowed to short sell.     

Information Opacity,Credit Risk,and the Design of Loan Contracts for Private Firms

This paper examines the structure and cost of a large sample of bank loans to private firms. Compared to public firms, private firms are more informationally opaque and riskier. The results suggest that the design of a loan to a private firm is significantly different from that to a public firm. Bank loans to private firms are more likely to be by a sole lender, collateralized, and have sweep covenants than loans to public firms. The cost of borrowing is higher for a private firm than for a public firm, even after holding constant firm and loan characteristics.     

工作郁闷的三座大山

管理层的本质就是让人们去做自己不愿意做的事情。所以改善下属的生活即使不是完全不可能，也是相当困难的。     

年度商业废话奖

每年的大约这个时候,我都会对来年进行预测.每年的预测都相同,但结果都不准.……     

Inequalities in Children's Experiences of Home Learning during the COVID-19 Lockdown in England*

This paper combines novel data on the time use, home-learning practices and economic circumstances of families with children during the COVID-19 lockdown with pre-lockdown data from the UK Time Use Survey to characterise the time use of children and how it changed during lockdown, and to gauge the extent to which changes in time use and learning practices during this period are likely to reinforce the already large gaps in educational attainment between children from poorer and better-off families. We find considerable heterogeneity in children's learning experiences – amount of time spent learning, activities undertaken during this time and availability of resources to support learning. Concerningly, but perhaps unsurprisingly, this heterogeneity is strongly associated with family income and in some instances more so than before lockdown. Furthermore, our analysis suggests that any impacts of inequalities in time spent learning between poorer and richer children are likely to be compounded by inequalities not only in learning resources available at home, but also in those provided by schools.