The Impact of Changes in the FTSE 100 Index

This paper investigates FTSE 100 index membership changes, which are determined quarterly by market capitalization and should have no information content. Return reversal around index additions and deletions suggests that buying (selling) pressure moves prices temporarily away from equilibrium, consistent with short‐term downward sloping demand curves. In contrast to widely reported results for the S&P 500, there is no evidence of permanent price effects. Further results suggest that investor awareness and monitoring due to index membership do not explain the price effects. There is statistically significant anticipatory trading in stocks that just fail to be promoted to the FTSE 100.     

‘Growing’ social protection in developing countries: Lessons from Brazil and South Africa

The rapid expansion of social protection in the South provides a rich diversity of experiences and lessons on how best to reduce poverty and ultimately eradicate it. Knowledge on how best to ‘grow’ social assistance, understood as long-term institutions responsible for reducing and preventing poverty, is at a premium. This article examines the expansion of social assistance in Brazil and South Africa, two of the middle income countries widely perceived to have advanced furthest in ‘growing’ social protection. It examines three aspects: the primacy of politics in explaining the expansion of social protection and assistance, the tensions between path-dependence and innovation in terms of institutions and practices, and the poverty and inequality outcomes of social assistance expansion. The article concludes by drawing the main lessons for other developing countries.     

A change of focus: Stock market reclassification in the UK

Abstract

This paper examines the impact of a change of focus by a firm, as signified by a firm's stock market reclassification. It distinguishes between a firm's sector reclassification motivated by information specific to that firm and one that results from the redefinition and reorganisation of a sector. The direction of the price effects following reclassification depends significantly upon this distinction. Furthermore, a stock's return comovement with the FTSE All-Share Index is affected by its reclassification into a new sector, consistent with the allocation of stocks into categories by investors. Reclassification can induce common factors in the returns to stocks in an index without there being any change in these stocks’ fundamental cash flows.     

Rolling settlement and market liquidity

This paper investigates the impact on UK stock and option markets of the change from an account based settlement system to a rolling settlement procedure. Such a change increases the transaction costs of short-term margin traders, and is likely to impact on the liquidity of the underlying market, as well as trading in the options market. Evidence is presented that the settlement procedure does impact on the liquidity of the market. Further, we find that rolling settlement increased market liquidity, consistent with the exit of margin traders as a result of the increase in short selling costs. Associated with this increase in liquidity is a significant reduction in nonoptionable stock trading volume, implying that margin trading may have been more prevalent in stocks without options. Finally, it is shown that while trading in stock options increased, the volatilities implied from call and put option prices indicate that put options have become relatively more expensive. This reflects the change in demand induced by the new settlement procedure, especially in terms of the increase in short selling costs.     

The Predictability of Short-HorizonStock Returns

This examines the predictability of short-horizonstock returns in the UK. We show that the subsequentreturn reversal of previous extreme performers isunlikely to be caused by either lead-lag effects orinventory imbalances, the most likely explanationbeing market overreaction. A market or trading basedexplanation is reinforced by the finding that thesereturn reversals are asymmetric, being lesssignificant after bad news. Further, we find that thelower transacting stocks exhibit the stronger returnreversals, in direct contrast to both the existing USevidence and the implication that liquidity effectscan explain the return reversals.     

The Predictability of Short-Horizon Stock Returns

This examines the predictability of short-horizon stock returnsin the UK. We show that the subsequent return reversal of previousextreme performers is unlikely to be caused by either lead-lageffects or inventory imbalances, the most likely explanationbeing market overreaction. A market or trading based explanationis reinforced by the finding that these return reversals areasymmetric, being less significant after bad news. Further,we find that the lower transacting stocks exhibit the strongerreturn reversals, in direct contrast to both the existing USevidence and the implication that liquidity effects can explainthe return reversals. JEL Classification: G10, G11, G12     

The long-run performance of initial public offerings and its determinants: the case of China

Existing research finds poor long-run performance of Initial Public Offerings (IPOs), particularly in the US. Using company IPO data from China’s Shanghai Stock Exchange, we find comparable levels of underperformance. In line with US results, initial overoptimism and the size of the offer are important explanatory factors for this underperformance. Additional variables include the earnings per share prior to listing, the decision to switch investment banks at the time of issue and whether the firm issues shares that can be purchased by foreign investors. These factors suggest that firms in China are able to manipulate the issue process. In the context of Chinese economic reforms, of particular note is the positive performance impact of the government shareholding after issue, which supports a signal argument in relation to continuing government support. As a result, we provide an interesting insight into the influence of the regulatory environment and economic transition on the long-run performance of IPOs in China.