Interaction of size,book‐to‐market and momentum effects in Australia

This study seeks to disentangle the effects of size, book‐to‐market and momentum on returns. Initial results show that each characteristic has a role in explaining returns, but that there is interaction between size and momentum, as well as between size and book‐to‐market. Three key findings emerge. First, the size premium is the strongest, particularly in the loser portfolios. Second, the value premium is generally limited to the smallest portfolios. Third, the momentum premium is evident for the large‐ and middle‐sized portfolios, but loser stocks significantly outperform winner stocks in the smallest size portfolio. When these interactions are controlled with multivariate regression, we find a significant negative average relation between size and returns, a significant positive average relation between book‐to‐market and returns, and a significant positive average relation between momentum and returns.     

Earnings management,audit adjustments,and the financing of corporate acquisitions: Evidence from China

Acquirers are motivated to overstate earnings prior to stock-financed acquisitions. We hypothesize that audits help to detect and correct such overstatements. We test this using a difference-in-differences design, which compares audit adjustments to earnings for stock-financed and cash-financed acquirers before versus after the acquisitions. Consistent with our hypothesis, we find larger downward adjustments in the audits immediately before stock-financed acquisitions. Further analysis of regulatory sanctions suggests the downward adjustments are in fact warranted, rather than auditors being overly conservative. Moreover, modifications in audit reports suggest that downward adjustments do not correct all of the reporting irregularities in audited financial statements.     

Modelling security market events in continuous time: Intensity based,multivariate point process models

A continuous time econometric modelling framework for multivariate financial market event (or ‘transactions’) data is developed in which the model is specified via the vector conditional intensity. Generalised Hawkes models are introduced that incorporate inhibitory events and dependence between trading days. Novel omnibus specification tests based on a multivariate random time change theorem are proposed. A bivariate point process model of the timing of trades and mid-quote changes is then presented for a New York Stock Exchange stock and related to the market microstructure literature. The two-way interaction of trades and quote changes in continuous time is found to be important empirically.     

Separation in Cointegrated Systems and Persistent-Transitory Decompositions

The notion of separation in cointegrated systems helps identifying possible sub-system structures that may reduce the complexity of larger systems by yielding a more parsimonious representation of the times series. In this paper we demonstrate that although the subsystem cointegration analysis in such systems can be conducted in case of both completely and partially separated systems, the dual approach, i.e. calculation of the common stochastic trends, may turn out to yield properties of the trends that differ depending upon the type of separation under consideration. In particular, we demonstrate how persistent-transitory (P-T) decompositions and long- and short-memory factorizations of a multivariate time series will interact across systems when considering the presence (or absence) of different types of separation. Generalizations to non-linear error correction models are briefly discussed.     

The hiring of accounting and finance officers from audit firms: how did the market react?

This study investigates the market’s reaction to companies hiring accounting and finance officers directly from their external audit firms—the auditor-to-client hiring practice referred to as the “revolving door.” The Sarbanes-Oxley Act (SOX) eliminated this hiring practice, reflecting concerns that such appointments may impair audit and financial reporting quality. However, it was also argued that companies may have benefited from hiring individuals already familiar with their systems, organization and personnel. To determine the prevalence of this hiring practice and how shareholders viewed these appointments, we examine 3-day cumulative abnormal returns around the announcements of newly appointed accounting and finance officers over the period 1985–2002. We find that the proportion of revolving door hires is relatively low (only 6.1% of all hires in our sample), but that when they did occur the market valued the revolving door appointments more positively than other appointments. Further tests reveal that the positive market reaction to revolving door appointments is driven mainly by smaller companies, and that these appointments are not associated with lower financial reporting quality when assessing subsequent discretionary accruals or the receipt of an Accounting and Auditing Enforcement Release (AAER). Overall, the low frequency of occurrence, investors’ positive perceptions, and the lack of association with deteriorated reporting quality indicate that the SOX restriction on revolving door appointments may have been unnecessary and will do little to protect shareholders.

Book reviews

Working with Developers in Urban Renewal

Francis Terry (Ed.). Public Finance Foundation London (1989). Discussion Paper 26, 78 pp. £10.00. ISBN 0 85299 445 1.

Councils in Conflict

S. Lansley, S. Goss and C. Wolmar. Macmillan, London (1989). x + 216 pp. £8.99. ISBN 0 333 454 138.

The Future of Housing Allowances

J. Hills, R. Berthoud and P. Kemp. Policy Studies Institute (1989). 71 pp. £5.95. ISBN 0 85374 461 0.