Government as a discriminating monopolist in the financial market: the case of China

We show that the many unusual features of China’s financial markets are consistent with a government choosing regulations to maximize a standard type of social welfare function. Under certain conditions, these regulations are equivalent to imposing explicit taxes on business and interest income, yet should be much easier to enforce. The observed implicit tax rates are broadly in line with those observed in other countries. The theory also forecasts, however, that China will face increasing incentives over time to shift to explicit taxes.     

中国住宅投资引领经济增长吗?

本文运用1985—2009年中国各省、直辖市、自治区的数据,对住宅投资与经济增长之间的领先—滞后关系进行分析。结果表明,无论是1985—2009年全时段还是以1998年大规模房改为分界线的分时段,无论是全国各省市还是分区域的各省市面板数据,经济增长引领住宅投资的单向Granger因果关系是稳定的;不同于一些研究和政策措施所主张的住宅投资引领经济增长的观点,本文认为找不到证据来支持住宅投资带动经济增长的论点。由此可见,所谓"住宅引领增长假说"在我国并不成立,而我国自上世纪90年代中期以来一直大力促进住宅投资以带动经济增长、把住宅建设当作国民经济的新增长点和支柱产业的政策值得反思。     

价格歧视战略与福利效应分析

在完全竞争市场条件下 ,竞争均衡可实现帕累托最优效率。垄断市场一般很难提供价格等于边际成本的产量水平 ,其产量与价格选择对社会来说不是最优的。垄断厂商以内生范畴和外生范畴为基础对消费者进行分类 ,使得价格歧视成为一种可行战略。由于定价策略存在差异 ,不同类型的价格歧视便具有不同的福利效应。     

价格涨跌幅限制起到了助涨助跌作用吗?

价格涨跌幅限制是否具有助涨助跌作用对于判断涨跌幅限制的实施效果具有重要的意义。既有的研究表明 ,股价在发生涨跌停时存在一定的过度反应。然而 ,本研究发现 ,在股价发生涨跌停时 ,虽然涨跌幅限制不能完全消除过度反应 ,但是可以显著地减小而不是增大过度反应的程度。本研究还发现 ,价格涨跌停本身并不是导致过度反应的原因 ,因为股价不仅在涨跌停时存在过度反应 ,而且在大幅度变化但未达到涨跌停时也存在过度反应。本文据此认为 ,没有证据表明价格涨跌幅限制具有助涨助跌作用。     

Do the Forward Sales of Real Estate Stabilize Spot Prices?

We examine the effect of forward sale (pre-sale) activities on the volatility of spot prices in the real estate market. The abundance of pre-sales data and major changes in regulatory control on the pre-sale market during the 90's in Hong Kong allow us to undertake empirical tests using Hong Kong's real estate data. Our results show that the volatility of spot prices increased significantly after forward sales were severely dampened by regulatory control measures introduced in 1994, but decreased again when the measures were partly relaxed in 1998. The results contribute to the long lasting debate on whether the introduction of a futures market reduces the volatility of spot prices. Previous studies were mainly conducted in markets with low transaction costs, notably financial markets. By utilizing the unique regulatory changes in the pre-sale market of Hong Kong, we are able to conduct an experiment on the conditional volatility of spot prices in a high information-cost environment, thereby shedding light on the important role of forward housing contracts in providing price expectation information for spot trading.     

Spatial Competition and Shopping Externalities: Evidence from the Housing Market

In search markets, greater spatial concentration of sellers increases price competition. At the same time, though, a greater concentration of sellers can create a shopping externality by attracting more buyers to the site. Using housing sales data, we test for spatial competition and shopping externality effects on prices and marketing time. We find that they reflect both competitive and shopping externality effects from surrounding houses, although the relative strength varies with how fresh the house is in the market, the freshness of surrounding houses, and the phase of the market cycle. New listings have the strongest shopping externality effect on neighboring houses that have been on the market for some time. Vacant houses have their strongest competition effects in the declining market and externality effects in the rising market. Fresh houses on the market reap little benefit from shopping externalities in all phases of the market cycle.     

Informed and uninformed trading on the Australian dollar

Using a high-frequency data set of the spot Australian/US dollar, this study examines the distribution of quotes, spreads, and returns across the trading day. By identifying the direction of trade and the subsequent quote returns from contributing banks, the segmented nature of the market into market-makers and informed and uninformed traders is investigated. The results suggest that the economic gain possible from private information is maximised over 2 to 5 quotes and is rapidly eroded by 20 quotes (about 2 min later during busy trading times) as other new information enters the market. Also, the analysis is revealing of discontinuities in trading and the volatility of pricing across the trading day.     

金融投机、实需与国际大宗商品价格——信息摩擦视角下的大宗商品价格影响机制研究

本文实证考察了2005-2015年金融投机和实需对国际大宗商品现货价格的影响及其作用机理。首先对具有信息噪音属性的金融投机进行了明确识别。其次,从多个维度出发区分市场信息摩擦状态,定量分析不同信息摩擦环境中金融投机和实需的影响差异。研究发现:大宗商品价格在长期中由实需因素主导,短期中由金融投机主导;短期中,相对于低信息摩擦环境,在市场波动性较高、金融压力上升以及投资者情绪高涨的高信息摩擦环境中,以金融投机为主的信息噪音对大宗商品价格的影响更强。进一步分析证实,相比于低信息摩擦环境,高信息摩擦环境中金融交易者的市场份额反而降低。据此,本文提出稳定大宗商品市场的关键在于提高市场透明度,减少信息摩擦,从市场质量出发降低信息噪音的影响。     

价格信息发布、消费者偏好差异与价格离中现象

本文运用博弈论方法研究互联网市场信息服务商的收费策略。互联网市场信息服务商的收入,来源于向厂商收取的信息发布费用。和向消费者收取的信息订阅费用。本文解释了,为什么目前大多数提供价格信息的网站只向厂商收取信息发布费用,而对消费者提供完全免费的服务。本文所建立的模型显示,如果互联网市场的规模足够小,消费者的信息订阅策略对信息服务商的收费足够敏感,则完全免费策略是信息服务商的最优策略。     

公共住房项目PPP模式研究

公共住房建设是政府实现住房领域公平目标的重要手段,但由于其社会福利属性,面临着资金来源不足、后续发展乏力的困境。文章将普遍应用于国内外基础设施领域的PPP模式引入公共住房建设领域,对PPP模式的中国公共住房项目进行内部、外部条件分析,论证研究的可行性;在此基础上结合经济适用房与廉租房的不同特点探索具体操作形式;对保障高效合作的运行机制进行探讨,以推进城镇公共住房建设发展。