Are momentum crashes pervasive regardless of strategy? Evidence from the foreign exchange market

This article studies the option-like behaviour of popular momentum strategies implemented in foreign exchange markets. The results confirm recent research findings of strong option-like behaviour for momenutm measures, based on the cumulative return from 12 and 6 months prior to the formation date Surprisingly, there is no such evidence for the popular momentum strategy accounting for a 1-month formation period.     

"惯性策略"的理论与实证研究综述

Jegadeesh和Titman(1993)发现惯性策略(momentum strategy)即买入近期股价上涨的股票,卖出近期股价下跌的股票,这种利用历史信息的投资策略可以获得显著的超常收益.本文首先刻画了惯性策略的发展演变过程,然后评述了行为金融和有效市场学派在学术论战中所提出的立场观点、理论模型和实证证据,最后笔者回顾了国内在这一研究领域的最新进展.     

云南旅游"二次创业"的市场分析和对策

本文通过对"十五"和2006年云南旅游市场发展的分析和研究,认为云南旅游市场已进入快速发展的成长期,并呈现出旅游客源市场多元化发展、旅游者消费水平不断攀高、旅游消费结构趋向合理、旅游目的地市场形成梯度、旅游市场形象更加鲜明等特点.针对云南旅游面临日趋激烈的市场竞争,云南在旅游"二次创业"发展中,必须立足自身发展的实际,抓住对内对外开放的有利时机,以旅游消费需求为导向,以培育旅游精品为重点,以旅游诚信建设为目标,以创新旅游促销为手段,以区域旅游合作为契机,以推进科技应用为动力,全面推进国际国内旅游市场的开发和拓展.     

基于异质型人力资本集聚的区域经济发展模式研究

依据经济学理论,对异质型人力资本进行了进一步的划分,提出了人力资本集聚的3种方式,对其所产生的经济效应分别进行了论述。以此为基础,结合实际,对人力资本集聚模式与区域经济发展模式之间的关系进行了研究,并就人力资本集聚模式与区域经济模式的转化进行了探讨。     

Profit persistence and stock returns

This article attempts to assemble further empirical evidence on the relationship between the product and the financial market. Drawing back on work in industrial organization, we analyse the relationship between profit persistence and factor-adjusted stock returns looking at about 2000 listed US firms over the last 34 years. While the relationship between (current, lagged and unexpected) profits/earnings and returns has been extensively analysed before, to our knowledge this is the first study to look at the relationship between stock returns and profit persistence. We interpret profit persistence as a result of market competition and innovation of the firm. It is shown that firm-specific long-run profit persistence after correction for other additional economic fundamentals of the firm has a positive impact on four-factor adjusted returns and a negative impact on their volatility.     

Day Trader Behavior and Performance: Evidence from Taiwan Futures Market

By using a unique data from the Taiwan futures market to identify each trader’s trading records and focusing on the high-frequency day traders who trade at least 90 days over the sample year, this study closely examines their behaviors and performance. Day traders’ performances are “risk-adjusted” and analyzed to identify behavioral biases and the resulting impact on performance. There is no evidence found that trading too much is detrimental to investment performance. The high-frequency day traders are more aware of the danger of behavioral biases and are as a result less prone to the disposition effect. Contrary to expectations, day traders in my study are shown to be non-loss averse. Most of our sample except for the highest performance quintile follow a momentum strategy.     

Characterising Vulnerability to Poverty in Rural Haiti: A Multilevel Decomposition Approach

This article characterises vulnerability to poverty in Haiti using a unique survey conducted in 2007 in rural areas. In a first step, using two‐level linear random coefficient models of both per capita consumption and per capita income, the article assesses the impact of self‐reported shocks on households' economic well‐being. In a second step, the prediction model is used to calculate various measures of vulnerability to poverty, considering various types of shocks. Empirical findings show that self‐reported (or observable) idiosyncratic shocks, in particular health‐related shocks, have larger impact on vulnerability to poverty than observable covariate shocks. These results are in line with the fact that many households reported idiosyncratic health shocks as being the worst shocks they experienced. On the other hand, unobservable idiosyncratic shocks appear to have generally more influence on households' vulnerability to poverty than unobservable covariate ones. We also show that omitting self‐reported shocks in the analysis leads to an underestimate of households' vulnerability to poverty.     

Determinants of idiosyncratic volatility: Evidence from the Indian stock market

This paper investigates whether firm-specific characteristics explain idiosyncratic volatility in the stocks of non-financial firms traded in the Indian stock market. It employs the linear time series five-factor model, augmented with a liquidity factor and the conditional EGARCH model, to extract yearly idiosyncratic volatility. We estimate a panel data regression to quantify the relationship between firm-specific characteristics and the volatility of individual securities. The results show that idiosyncratic volatility is significant in emerging markets such as India, and that cross-sectional return variations of firms are associated with firm-specific characteristics such as firm size, book-to-market ratio, momentum, liquidity, cash flow-to-price ratio, and returns on assets. We find that the idiosyncratic risk documented in this study is associated with smaller size of company, higher liquidity, low momentum, high book-to-market ratio, and low cash flow-to-price ratio. The findings suggest need to develop alternative tools to make investment decisions in emerging markets.     

Dispersion in Analyst Forecasts and the Profitability of Earnings Momentum Strategies

This paper shows that the dispersion in analysts' consensus forecasts contains incremental information to predict future stock returns. Consistent with prior research, stock prices in the German market underreact to news about future earnings and drift in the direction suggested by analysts' forecasts revisions. Even higher abnormal returns can be achieved by applying such an earnings momentum strategy to stocks with a low dispersion in analyst forecasts. These results support one of the recent behavioural models in which investors underweight new evidence and conservatively update their beliefs in the right direction, but by too little in magnitude with respect to more objective information.     

Does the Momentum Strategy Work Universally? Evidence from the Japanese Stock Market

This paper investigates effectiveness of momentum strategies in the Japanese stock market during the period of 1975 to 1997. The main findings of this research are that momentum strategy portfolios which invest in past three-to-twelve month winners and sell past three-to-twelve month losers lose about 0.5% per month over the subsequent three to twelve months. This means that stock prices in the Japanese stock market reverse rather than continue over a medium-term horizon. The most significant reversal pattern is observed at the first month of portfolio formation and is unique to small stocks. Even with the market risk and size factor controlled, the price reversal is still present.