COINTEGRATION OF STOCK MARKETS BETWEEN NEW ZEALAND, AUSTRALIA AND THE G7 ECONOMIES: SEARCHING FOR CO-MOVEMENT UNDER STRUCTURAL CHANGE

This paper examines whether the New Zealand equity market is integrated with the equity markets of Australia and the G7 economies by applying both the Johansen (1988 ) and Gregory and Hansen (1996 ) approaches to cointegration. The Johansen (1988 ) test suggests that there is no long-run relationship between the New Zealand stock market and any of the other stock markets considered in the study. The Gregory and Hansen (1996 ) test finds that the New Zealand and United States stock market is cointegrated, but the New Zealand stock market is not cointegrated with the other stock markets in the study. This suggests that in order to avoid some of the risk through international portfolio diversification there is potential for investors to purchase shares in the New Zealand market and either the Australian market or most of the world's leading equity markets.     

The Value of Crowdsourced Earnings Forecasts

Crowdsourcing—when a task normally performed by employees is outsourced to a large network of people via an open call—is making inroads into the investment research industry. We shed light on this new phenomenon by examining the value of crowdsourced earnings forecasts. Our sample includes 51,012 forecasts provided by Estimize, an open platform that solicits and reports forecasts from over 3,000 contributors. We find that Estimize forecasts are incrementally useful in forecasting earnings and measuring the market's expectations of earnings. Our results are stronger when the number of Estimize contributors is larger, consistent with the benefits of crowdsourcing increasing with the size of the crowd. Finally, Estimize consensus revisions generate significant two‐day size‐adjusted returns. The combined evidence suggests that crowdsourced forecasts are a useful supplementary source of information in capital markets.     

A Tax Evasion Model with Allowance for Retroactive Penalties*

Discrete models of tax evasion are considered when evasion has occurred over a period of several years. Allowance is made for growth in income, investment of illicit gains from successful evasion, and the imposition of retroactive penalties. Retroactive penalties increase deterrence of evasion if introduced at a point where evasion has been continuing for some years, since the utility gain from continuing successful evasion is unaffected, whereas the utility loss will be increased regardless of attitude to risk. Prohibitive penalty rates are determined, and a range of penalty rates are given in which some dishonest taxpayers may become honest. The formulation of the basic model and consequent conclusions are relevant to the current Australian taxation scene.