Impacts of Institutional Intervention on Price Transmissions: The Case of the Ethiopian Commodity Exchange

In the aftermath of the market liberalization reforms, interventions in developing countries shifted toward building institutions. One of such interventions is the introduction of commodity exchanges. The theoretical justification is that commoditization reduces the high transaction costs associated with the information and enforcement problems characterizing agricultural markets of these countries. However it is not known whether these potential gains are transmitted to the various markets along a value chain. By taking the Ethiopian Commodity Exchange (ECX) as a case, this paper examines the impacts of the introduction of the commodity exchange in transmitting price signals along the coffee value chain (world‐export‐auction‐producer prices). We found that both the speed and symmetry of transmission remains weak even after the launch of ECX. At each level, the market chain was found to favor buyers. This implies that not only the country's gains from export are sub‐optimal, the cumulative burden is on the millions of smallholder farmers who are located at the bottom of the chain. In a context where local agricultural markets remain traditional and export markets barely competitive, the introduction of the commodity exchange will have limited impacts in improving the performance of markets in transmitting price signals. Other policy measures to further liberalize both local and export markets are required.     

Real interest parity and transaction costs for the group of 10 countries

Equality of ex ante real interest rates is investigated allowing for variations within a transaction costs band. Transaction costs are estimated in foreign exchange markets and in Eurocurrency markets directly from the bid–ask spreads. Two one-sided t tests show that observed transaction costs are too small to account for differences among real interest rates. Moreover, there is a clear evidence that transaction costs tend to decrease overtime.     

我国商品住宅交易费用测量研究——以2008年北京市商品住宅交易费用为例

房地产业作为第三产业,是交易服务部门,其中存在大量的交易活动,交易就会产生摩擦成本。由于房地产的特性及其行业市场交易的特征,房地产市场中的交易主要表现为权益交易,交易过程要受到制度的严格约束,所以其摩擦成本也是相对稳定的,可以通过定量分析测算。本文以房地产业为研究对象,按照房地产行业的交易部门特性及其所有费用来测算2003年至2008年我国房地产业的宏观交易费用;并选取商品性住宅为样本,根据诺思在人类行为理论基础上对交易费用和转换费用的划分,只测量通过市场的各种交易费用的启示,把商品性住宅开发分为生产阶段和交易阶段,生产阶段的交易费用部分和交易阶段的所有费用定义为交易费用,通过分析其价格构成,列出可测量的交易费用和转换费用单项,然后运用正向相加法和逆向剔除法,测量2008年北京市商品性住宅微观交易费用,为优化该行业效益提供实证分析基础。     

Search cost,trading strategies and optimal market structure

The theory of Walrasian equilibrium yields a set of prices at which the aggregate competitive demand for each commodity equals its aggregate competitive supply. However, even at equilibrium prices the theory of competitive equilibrium does not explicitly offer explanation regarding the manner in which trades are actually executed. This paper considers a model where trade takes place in a decentralized fashion and examines in a dynamic game-theoretic framework, the role of social institution of money and markets in facilitating exchange. The steady state Nash equilibrium derived in the paper demonstrates how, depending on the level of transaction costs associated with a market setup (synonymously, trading posts to exchange possible pairs of goods) appropriate monetary trade emerges, which like a hub and spoke network (Starr and Stinchcombe, 1999) makes some markets non-functioning and in equilibrium only the markets having trade through the medium of exchange continue to exist. However, despite the obvious advantages of a market setup in reducing search costs, pure random search for a complementary trading partner (as considered by Ostroy and Starr, 1974; Kiyotaki and Wright , 1989; and others) prevails in many economies, especially, in many developing economies. This paper models this feature of developing economies by introducing differences in transaction costs across agents and shows why sustainable equilibria might exist exhibiting random search for certain commodities even in the presence of established markets.     

Land Reforms in the Presence of Monitoring Costs and International Trade

This paper elucidates the implications of transaction costs in agrarian labor hiring activities in a two-sector model of international trade and identifies a link between the size distribution of land and intersectoral allocation of productive inputs. Ceteris paribus , a more unequal distribution of land increases the amount of outmigration from agriculture, a shrinkage of the production possibility set, and a decrease (increase) in the volume of trade if and only if agriculture is the exportable (importable) sector. In addition, nonintervention in factor and commodity markets is constrained optimal only when land redistribution is not a feasible policy option.     

Did Open Access Integrate Natural Gas Markets? An Arbitrage Cost Approach

Several studies, using analyses that measure the correlation between prices in various markets, have argued that deregulation of natural gas pipeline contracts has reduced the transaction costs between natural gas markets. Correlations approaches, however, have potentially serious problems. Given these problems, this article estimates transactions costs directly. Deregulation is found to have lowered transactions costs to and from the Louisiana, Oklahoma, and Texas regions, but increased transactions costs from the Rocky Mountain area. Deregulation of pipeline contracts, by lowering the cost of using the market and therefore increasing demand for pipeline capacity, may therefore have differential impacts upon transactions costs between markets. This study implies that the transactions cost approach may be able to overcome several difficulties inherent in the correlations approach.     

建立水市场的成本估计框架

以往关于水资源市场交易机制的研究因为仅限于一个市场的交易成本,因此常常低估交易成本。我们认为,市场产权制度的设计与实施相关成本是交易成本中非常重要的部分。在运用交易成本对水配置机制效率的全面评价时面临一系列的测度问题,尽管有关最终交易的成本相对易于测度,但最初的信息收集、政策执行和正式市场机制的设计与运行的有关成本的测度存在困难。事实上,当一个政策实施后,再来测度交易成本要容易得多,但为了决策的需要,我们必须事前就了解相应的交易成本。     

Correlations and volatility spillovers across commodity and stock markets: Linking energies,food, and gold

This paper employs a VAR-GARCH model to investigate the return links and volatility transmission between the S&P 500 and commodity price indices for energy, food, gold and beverages over the turbulent period from 2000 to 2011. Understanding the price behavior of commodity prices and the volatility transmission mechanism between these markets and the stock exchanges are crucial for each participant, including governments, traders, portfolio managers, consumers, and producers. For return and volatility spillover, the results show significant transmission among the S&P 500 and commodity markets. The past shocks and volatility of the S&P 500 strongly influenced the oil and gold markets. This study finds that the highest conditional correlations are between the S&P 500 and gold index and the S&P 500 and WTI index. We also analyze the optimal weights and hedge ratios for commodities/S&P 500 portfolio holdings using the estimates for each index. Overall, our findings illustrate several important implications for portfolio hedgers for making optimal portfolio allocations, engaging in risk management and forecasting future volatility in equity and commodity markets.     

Price discovery and the effects of fragmentation on market quality: evidence from Cypriot cross-listed stocks

Using a novel high-frequency data set, we examine the contribution of Greek trading to the price discovery process of a pair of Cypriot blue-chip, cross-listed stocks during overlapping trading hours. Additionally, we investigate the effects of market fragmentation on the home market’s quality, as measured by microstructure-based liquidity measures. Contrary to earlier studies from other markets, our findings show that foreign stock exchanges can act as the leading contributors to price discovery and can concentrate the majority of trading activity and produce the lowest transaction costs. Our results also show that market fragmentation can lead to negative effects on market liquidity.     

流动性与资产定价:基于我国股市资产换手率与预期收益的实证研究

流动性与资产定价是目前金融研究的热点之一 (O’Hara,2 0 0 3 )。本文通过检验交易频率零假设和交易成本备择假设 ,深入分析我国股市流动性与资产定价的理论与经验关系 ,发现 :我国股市存在显著的流动性溢价 ,换手率低、交易成本高且流动性小的资产具有较高的预期收益 ;产生流动性溢价的原因是交易成本而不是交易频率 ;与国外股市相似 ,小企业收益率高于大企业 ,价值股收益率高于成长股。因此 ,我国股市并非令人无法捉摸 ,流动性、规模和价值效应都是资产定价的因素     

Existence of financial market equilibria with transaction costs

The purpose of this paper is to give an existence proof of equilibria in a two-period exchange economy with incomplete markets and transaction costs. When tradings on financial markets incur real transaction costs —interpreted as costs of enforcement of financial contracts or real taxation of financial revenues —the set of individual portfolios is bounded by the limited resources of the economy. Existence of equilibria then follows from Kakutani 's fixed point theorem.     

新阶段中国商品对俄出口研究

中国俄罗斯年开启了中俄交流的大幕。在这个时期，中国加大商品出口，平衡对俄贸易逆差已不容忽视。中国商品在俄罗斯市场具有明显的竞争优势，应借助俄罗斯中国年活动平台，促进相互了解和发展，优化产品出口结构，进一步开拓俄罗斯市场。     

Transaction costs of carbon offset projects: A comparative study

The land-use change and forestry sector can be a cost-effective contributor to climate mitigation in at least three ways: providing carbon offsets through carbon sequestration in biomass and soils, reducing emissions of methane and other greenhouse gases, and producing biofuels that replace fossil fuels. The presence of carbon markets should help encourage these activities; however, most carbon trades to date have occurred in the energy sector. A major obstacle to carbon trades from land-use systems is the presence of high transaction costs of converting a carbon offset into a tradable commodity, so the prevailing market carbon prices may not provide enough incentive for adoption. This paper presents a model of the exchange of carbon offsets between a project developer and a group of landholders. The model is solved to derive project feasibility frontiers that show the minimum number of contracts necessary to make a project feasible at any given carbon price. The model is applied to two case studies (smallholder agroforestry in Indonesia and partial reforestation of family farms in Australia) under two types of contract (purchase of carbon flows and rental of carbon stocks). The paper concludes by identifying possible strategies to reduce transaction costs while maintaining project integrity.     

ENVIRONMENTAL COMMODITIES MARKETS: 'MESSY' VERSUS 'IDEAL' WORLDS

Adopting tradable permit market (TPM) programs to address air quality and water supply problems has become increasingly popular. However, economists evaluating these proposals have erred in comparing "ideal" permit markets with "messy" existing regulatory structures. In fact, permit markets also are likely to be "messy" due to the existing institutions and market imperfections. The physical and technological nature of these environmental commodities have and will continue to impose barriers to creating such markets. In addition, the analyses often do not adequately define the legal, management, and exchange institutions so as to capture how transaction costs and uncertainty will affect these markets. This paper identifies some specific factors that influence permit markets in environmental commodities and discusses the potential magnitudes of these effects.     

An Endogenous Growth Model of a Financially Repressed Small Open Economy

The paper develops a monetary endogenous growth model of a financially repressed small open economy, characterized by curb markets, capital mobility, transaction costs in domestic and foreign capital markets, and a flexible exchange rate system, to analyze the impact of financial liberalization – interest rate deregulation and lower multiple reserve requirements – on growth and inflation. When the model is calibrated to match world figures, we find that interest rate deregulation enhances growth and reduces inflation in steady-state. For relatively smaller transaction costs in the curb market, the above result is, however, reversed. Under such circumstances, lowering the transaction costs in the foreign capital market tends to restore the growth-enhancing (inflation-reducing) capabilities of interest rate deregulation. Lower reserve requirements, though, always ensures lower (higher) steady-state inflation (growth).     

建立商品期货持仓风险指数的设想

期货投资是一种风险度很高的金融投资方式,由于中国在很多大宗商品上尚未取得定价话语权,因此中国期货市场的价格波动受外盘的影响很大。对于持仓过夜的投资者而言,一旦持仓方向错误,就会遭受巨大的经济损失。有鉴于此,提出了建立适合中国国情的定量化商品期货持仓风险指数的设想,以帮助投资者认清各品种持仓过夜的市场风险,做到理性投资。     

中国农产品流通体制改革的目标模式

农产品交易中的行政动员成本、组织管理成本,以及供求信号失真导致的高昂交易费用与机会成本,不断地呼唤着农产品流通体制的改革。应通过发挥政府的宏观调控作用。批发市场的市场中枢作用、市场企业化中企业的管理作用,对农产品流通体制予以完善。     

Alliance or alone? how to build interorganizational information systems

This article shows that the builders of interorganizational information systems (IOSs) struggle most with the problem of whether to build them alone or in an alliance mode. It is suggested that the situation should be studied in the light of the transaction costs involved in the application ofthe IOS. The nature of the application to be handled through the IOS should be the main detemrlnant of IOS design. According to the study, as derived from the transaction cost approach, applications with low transaction

costs are suitable for alliance networks whereas those with high transaction costs should be constructed from an organization's own resources. A market-hierarchy/decision-maker model for determining the righi way to participate in IOSs is introduced. There is a visible trend leading to a proportionally greater use of markets. Information technology lowers transaction costs, and more and more products and services become suitable for marketing through IOSs. A case example is dmwn from the Finnish Insurance Industry, where direct writing is the dominant governance structure. The transaction costs in motor vehicle insurance are studied.     

Transaction costs and informational cascades in financial markets

We study the effect of transaction costs (e.g., a trading fee or a transaction tax, like the Tobin tax) on the aggregation of private information in financial markets. We implement a financial market with sequential trading and transaction costs in the laboratory. According to theory, eventually all traders neglect their private information and abstain from trading (i.e., a no-trade informational cascade occurs). We find that, in the experiment, informational no-trade cascades occur when theory predicts they should (i.e., when the trade imbalance is sufficiently high). At the same time, the proportion of subjects irrationally trading against their private information is smaller than in a financial market without transaction costs. As a result, the overall efficiency of the market is not significantly affected by the presence of transaction costs.     

The Innovation impact model: a tool t0 study the impact of technological change

This article shows that the builders of interorganizational information systems (IOSs) struggle most with the problem of whether to build them alone or in an alliance mode. It is suggested that the situation should be studied in the light of the transaction costs involved in the application ofthe IOS. The nature of the application to be handled through the IOS should be the main detemrlnant of IOS design. According to the study, as derived from the transaction cost approach, applications with low transaction

costs are suitable for alliance networks whereas those with high transaction costs should be constructed from an organization's own resources. A market-hierarchy/decision-maker model for determining the righi way to participate in IOSs is introduced. There is a visible trend leading to a proportionally greater use of markets. Information technology lowers transaction costs, and more and more products and services become suitable for marketing through IOSs. A case example is dmwn from the Finnish Insurance Industry, where direct writing is the dominant governance structure. The transaction costs in motor vehicle insurance are studied.