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Neutralized Competition 中和竞争
Pub Date : 2018-05-14 DOI: 10.2139/ssrn.3178182
Seungjin Han
This paper proposes a tractable competing mechanism game where each seller simultaneously posts a trading contract that specifies a menu of dominant strategy incentive compatible (DIC) direct mechanisms conditional on an array of messages sent by buyers, and each seller subsequently chooses a DIC direct mechanism from his menu. The complete set of a seller's profits that are supportable in a (symmetric) equilibrium is the interval between the minmax value of his profit with respect to DIC direct mechanisms and his profit in the joint profit maximization. The set of a seller's equilibrium profits is robust to the possibility of a seller's deviation to any arbitrary mechanism in the standard environment with linear utilities and independent private type. Further, with no limited liability or with no capacity constraints, the set of a seller's equilibrium profits coincides with the set of his feasible (i.e., individually rational and incentive compatible) profits. Given a number of buyers, the number of sellers can be endogenized and is equal to the largest number at which a seller's profit in the joint profit maximization is non-negative: As the number of buyers increases, competition is neutralized because only the monopoly terms of trade prevails in the market, whereas the range of a seller's equilibrium profits shrinks to his reservation profit.
本文提出了一种易于处理的竞争机制博弈,其中每个卖方同时发布一个交易合约,该合约规定了以买方发送的一系列消息为条件的优势策略激励兼容(DIC)直接机制菜单,每个卖方随后从其菜单中选择一个DIC直接机制。卖方在对称均衡下可维持的全部利润集合是卖方在DIC直接机制下的利润极小值与卖方在共同利润最大化下的利润之间的区间。在具有线性效用和独立私有类型的标准环境下,卖方均衡利润集对卖方偏离任意机制的可能性具有鲁棒性。此外,在没有有限责任或产能限制的情况下,卖方的均衡利润集与其可行(即个人理性和激励相容)利润集一致。给定一定数量的买方,卖方的数量可以内生,并且等于共同利润最大化中卖方利润非负的最大数量:随着买方数量的增加,竞争被中和,因为只有垄断贸易条件在市场上占主导地位,而卖方的均衡利润范围缩小到他的保留利润。
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引用次数: 0
Optimal Sequential Screening with Ex Post Participation Constraint 具有事后参与约束的最优顺序筛选
Pub Date : 2018-03-22 DOI: 10.2139/ssrn.3050014
T. Heumann
We study a principal-agent model. The parties are symmetrically informed at first; the principal then designs the screening mechanism and, concurrently, the process by which the agent learns his type. Because the agent can opt out of the mechanism ex post, it must leave him with nonnegative rents ex post. We characterize the profit-maximizing mechanism. In that optimal mechanism, learning proceeds in continuous time and, at each moment, the agent learns a lower bound on his type. For each type, there is one of two possible outcomes: the type is allocated the efficient quantity or is left with zero rents ex post.
我们研究了一个委托代理模型。当事人一开始是对称知情的;然后,委托人设计筛选机制,同时设计代理学习其类型的过程。因为代理可以选择事后退出该机制,所以事后必须给他留下非负租金。我们描述了利润最大化机制。在该最优机制中,学习在连续时间内进行,并且在每个时刻,智能体学习其类型的下界。对于每种类型,都有两种可能的结果之一:该类型被分配到有效数量,或者事后租金为零。
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引用次数: 4
Collateral, Rehypothecation, and Efficiency 抵押品、再抵押和效率
Pub Date : 2018-03-08 DOI: 10.2139/ssrn.2992797
Hyejin Park, C. Kahn
Abstract This paper studies rehypothecation, a practice in which financial institutions re-pledge collateral pledged to them by their clients. Rehypothecation enhances provision of funding liquidity to the economy, but it also incurs deadweight cost by misallocating the asset among the agents when counterparties fail. We examine the possibility of a conflict between the intermediary and its borrower on rehypothecation arrangements. The direction of this conflict depends on haircuts of the contract between them: if the contract involves over-collateralization, there tends to be an excessive use of rehypothecation, and if the contract involves under-collateralization, there tends to be an insufficient use of rehypothecation. This offers an empirical prediction of a link between the size of haircut in collateralized financial contracts, borrower information, and the likelihood of rehypothecation.
摘要本文研究了再质押,即金融机构将其客户质押给其的抵押品再质押的行为。再抵押增加了向经济提供的资金流动性,但当交易对手破产时,它也会因在代理人之间错配资产而产生无谓成本。我们研究了中介机构和借款人在再抵押安排上发生冲突的可能性。这种冲突的方向取决于两者之间的合同“理发”:如果合同涉及过度抵押,则往往会过度使用再抵押,如果合同涉及不足抵押,则往往会使用再抵押不足。这为抵押金融合约的减记规模、借款人信息和再抵押可能性之间的联系提供了实证预测。
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引用次数: 15
Size Management by European Private Firms to Minimize Proprietary Costs of Disclosure 欧洲私营企业规模管理以减少信息披露的专有成本
Pub Date : 2018-02-27 DOI: 10.2139/ssrn.2484161
Darren Bernard, D. Burgstahler, Devrimi Kaya
We examine size management by European private firms for which disclosure requirements increase at size thresholds. Our estimates suggest at least 8% of firms near thresholds that impose income statement disclosure manage size downward, and the average firm that manages size sacrifices more than 6% of its assets. We find that multiple determinants of proprietary costs predict this behavior, and that size management to avoid mandatory audits, which are similarly imposed at size thresholds, is of comparable magnitude. Our results triangulate the economic significance of proprietary costs in a setting largely without confounding capital market, agency, or compliance costs.
我们研究了欧洲私营公司的规模管理,披露要求在规模阈值上增加。我们的估计表明,在接近要求披露损益表的门槛的公司中,至少有8%的公司降低了规模,而管理规模的公司平均牺牲了6%以上的资产。我们发现,专有成本的多个决定因素预测了这种行为,并且规模管理以避免强制性审计(类似地在规模阈值上施加强制审计)具有可比的规模。我们的结果在很大程度上没有混淆资本市场、代理或合规成本的情况下,对专有成本的经济意义进行了三角测量。
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引用次数: 75
No One Owns Data 没有人拥有数据
Pub Date : 2018-02-14 DOI: 10.2139/SSRN.3123957
L. Determann
Businesses, policy makers, and scholars are calling for property rights in data. They currently focus particularly on the vast amounts of data generated by connected cars, industrial machines, artificial intelligence, toys and other devices on the Internet of Things (IoT). This data is personal to numerous parties who are associated with a connected device, for example, the driver of a connected car, its owner and passengers, as well as other traffic participants. Manufacturers, dealers, independent providers of auto parts and services, insurance companies, law enforcement agencies and many others are also interested in this data. Various parties are actively staking their claims to data on the Internet of Things, as they are mining data, the fuel of the digital economy. Stakeholders in digital markets often frame claims, negotiations and controversies regarding data access as one of ownership. Businesses regularly assert and demand that they own data. Individual data subjects also assume that they own data about themselves. Policy makers and scholars focus on how to redistribute ownership rights to data. Yet, upon closer review, it is very questionable whether data is—or should be—subject to any property rights. This article unambiguously answers the question in the negative, both with respect to existing law and future lawmaking, in the United States as in the European Union, jurisdictions with notably divergent attitudes to privacy, property and individual freedoms. Data as such, i.e., the content of information - exists conceptually separate from works of authorship and data bases (which can be subject to intellectual property rights), physical embodiments of information (data on a computer chip, which can be subject to personal property rights; warning symbol painted on a road, which can be subject to real property rights) and physical objects or intangible items to which information relates (e.g., a dangerous malfunctioning vehicle to which the warnings on road markings or a computer chip relate). Lawmakers have granted property rights to different persons regarding works of authorship, data bases, chattels, land and other items for the purpose of incentivizing investments and improvements in such items, a purpose that does not exist with respect to data as such. Individual persons, businesses, governments and the public at large have different interests in data and access restrictions. These interests are protected by an intricate net of existing laws that deliberately refrain from granting property laws in data. Existing property laws intentionally exclude data from subject matter definitions. Existing data-related laws and property laws balance interests in data and access restrictions based on public policy considerations that would be impaired by a creation of property rights in data. New property rights in data are not suited to promote better privacy or more innovation or technological advances, but would more likely suffocate free s
企业、政策制定者和学者都在呼吁建立数据产权。他们目前特别关注联网汽车、工业机器、人工智能、玩具和物联网(IoT)上的其他设备产生的大量数据。这些数据对于与联网设备相关的许多各方都是个人数据,例如,联网汽车的司机、车主和乘客,以及其他交通参与者。制造商、经销商、汽车零部件和服务的独立供应商、保险公司、执法机构和许多其他机构也对这些数据感兴趣。在挖掘数字经济的燃料——数据的同时,各方都在积极地在物联网上宣称自己对数据的所有权。数字市场的利益相关者经常将有关数据访问的索赔、谈判和争议视为所有权问题之一。企业经常主张并要求自己拥有数据。个人数据主体也假设他们拥有关于自己的数据。政策制定者和学者关注的焦点是如何重新分配数据的所有权。然而,经过仔细审查,数据是否——或者应该——受到任何产权的约束是非常值得怀疑的。这篇文章明确地以否定的方式回答了这个问题,无论是在美国还是在欧盟,就现有法律和未来的立法而言,这两个司法管辖区对隐私、财产和个人自由的态度都明显不同。数据本身,即信息的内容,在概念上与作者的作品和数据库(可受知识产权保护)、信息的物理体现(计算机芯片上的数据,可受个人产权保护)分开存在;画在道路上的警告标志(可能受不动产权利的约束)和与信息有关的实物或无形物品(例如,与道路标记或计算机芯片上的警告有关的危险故障车辆)。立法者授予不同的人关于作者作品、数据库、动产、土地和其他项目的财产权,目的是激励对这些项目的投资和改进,而数据本身并不存在这样的目的。个人、企业、政府和公众在数据和访问限制方面有不同的利益。这些利益受到错综复杂的现有法律网络的保护,这些法律故意避免赋予数据财产法。现行物权法有意将数据排除在标的物定义之外。现有的与数据有关的法律和财产法根据公共政策考虑平衡了数据和访问限制方面的利益,而在数据中设立财产权将损害这些考虑。新的数据产权不适合促进更好的隐私保护,也不适合促进更多的创新或技术进步,而更有可能扼杀言论自由、信息自由和科技进步。因此,对数据进行资产化的理由并不令人信服,而是被保持数据“开放”的理由所压倒。不需要为数据创建新的产权。本文首先简要回顾了物联网的现状,指出了由连接设备、人工智能、大数据分析工具和其他信息技术产生的数据池的爆炸式增长。第1部分为本文其余部分研究当前具体的法律和政策挑战奠定了基础。第2部分对作为权益主体的“数据”和“信息”进行了概念上的区分和定义。在第3部分中,区分和明确定义是审查现有财产法的目的和范围的基础,包括不动产、个人财产和知识产权法。第4部分分析了不授予财产权的数据相关法律的影响。第5部分研究了当前数据相关法律框架如何保护或损害各利益相关者的利益,以确定可能保障额外产权的潜在差距。第6部分探讨了支持和反对数据产权的政策考虑。第7部分的结论是,没有人拥有数据,也没有人应该拥有数据。
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引用次数: 24
Private Information in Currency Markets 货币市场中的私人信息
Pub Date : 2018-01-24 DOI: 10.2139/ssrn.2720172
Alexander Michaelides, Andreas Milidonis, George P. Nishiotis
Using daily abnormal currency returns for the universe of countries with flexible exchange rates, we show local currency depreciations ahead of unscheduled, public sovereign debt downgrade announcements. Consistent with the private information hypothesis, the effect is stronger in lower institutional quality countries and holds after we control for concurrent public information and for publicly available rumors about the forthcoming downgrades. Our results persist when abnormal currency returns are adjusted for global carry and dollar risk factors, world equity and bond returns, as well as local stock market returns. Finally, the currency depreciations are permanent, providing evidence for a link between fundamentals and currency markets.
利用浮动汇率国家的每日异常货币回报,我们显示了当地货币在计划外的公开主权债务降级公告之前的贬值。与私人信息假说一致,在制度质量较低的国家,这种效应更强,并且在我们控制了同时发布的公共信息和关于即将到来的评级下调的公开谣言之后,这种效应仍然成立。在将全球套利和美元风险因素、全球股票和债券回报以及当地股市回报调整后,我们的结果仍然存在。最后,货币贬值是永久性的,这为基本面与货币市场之间的联系提供了证据。
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引用次数: 25
Learning from Neighbors About a Changing State 向邻居学习状态的变化
Pub Date : 2018-01-06 DOI: 10.1093/restud/rdac077
Krishna Dasaratha, B. Golub, Nir Hak
Agents learn about a changing state using private signals and their neighbors’ past estimates of the state. We present a model in which Bayesian agents in equilibrium use neighbors’ estimates simply by taking weighted sums with time-invariant weights. The dynamics thus parallel those of the tractable DeGroot model of learning in networks, but arise as an equilibrium outcome rather than a behavioral assumption. We examine whether information aggregation is nearly optimal as neighborhoods grow large. A key condition for this is signal diversity: each individual’s neighbors have private signals that not only contain independent information, but also have sufficiently different distributions. Without signal diversity—e.g., if private signals are i.i.d.—learning is suboptimal in all networks and highly inefficient in some. Turning to social influence, we find it is much more sensitive to one’s signal quality than to one’s number of neighbors, in contrast to standard models with exogenous updating rules.
智能体通过私有信号和它们的邻居过去对状态的估计来了解状态的变化。我们提出了一个模型,在该模型中,均衡状态的贝叶斯代理仅仅通过取定常权重的加权和来使用邻居的估计。因此,这种动态与易于处理的DeGroot网络学习模型相似,但作为一种平衡结果而不是行为假设而出现。我们考察了随着社区规模的扩大,信息聚合是否接近最优。实现这一点的一个关键条件是信号多样性:每个个体的邻居都有私有信号,这些信号不仅包含独立的信息,而且具有足够不同的分布。没有信号分集。,如果私有信号是人工智能的,那么学习在所有网络中都是次优的,在某些网络中效率非常低。至于社会影响,我们发现,与具有外生更新规则的标准模型相比,它对一个人的信号质量比对一个人的邻居数量要敏感得多。
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引用次数: 15
Contracts that Reward Innovation: Delegated Experimentation with an Informed Principal 奖励创新的合同:委托实验与知情的委托人
Pub Date : 2017-11-14 DOI: 10.2139/ssrn.3071451
Yiman Sun
We examine the nature of contracts that optimally reward innovations in a risky environment, when the innovator is privately informed about the quality of her innovation and must engage an agent to develop it. We model the innovator as a principal who has private but imperfect information about the quality of her project: the project might be worth exploring or not, but even a project of high quality may fail. We characterize the best equilibrium for the high type principal, which is either a separating equilibrium or a pooling one. Due to the interaction between the signaling incentives of the principal and dynamic moral hazard of the agent, the best equilibrium induces inefficiently early termination of the high quality project. The high type principal is forced to share the surplus -- with the agent in the separating equilibrium, or the low type principal in the pooling equilibrium. A mediator, who offers a menu of contracts and keeps the agent uncertain about which contract will be implemented, can increase the payoff of the high type principal to approximate her full information surplus.
我们考察了在风险环境中,当创新者私下得知其创新的质量,并且必须聘请代理人来开发创新时,最优奖励创新的合同的性质。我们将创新者建模为一个拥有关于其项目质量的私人但不完全信息的负责人:该项目可能值得探索,也可能不值得探索,但即使是高质量的项目也可能失败。我们描述了高类型本金的最佳均衡,即分离均衡或池化均衡。由于委托人的信号激励和代理人的动态道德风险的相互作用,最佳均衡导致了高质量项目的无效率提前终止。高类型的委托人被迫与分离均衡中的代理人或池化均衡中的低类型委托人分享盈余。一个提供一系列合同并使代理人不确定将执行哪一个合同的调解人,可以增加高类型委托人的报酬,使其接近她的全部信息剩余。
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引用次数: 1
Dynamic Contracting with Moral Hazard Under Incomplete Information 不完全信息下具有道德风险的动态契约
Pub Date : 2017-11-12 DOI: 10.2139/ssrn.3283476
Teddy Mekonnen
I study a continuous time principal-agent model in which an unknown parameter and the agent's hidden effort affect the distribution of observable outcomes. The principal and the agent learn about the parameter by observing past outcomes. The agent's current effort has an implicit long-term effect through the belief dynamics and a deviation in effort creates a persistent disparity between the principal's and the agent's beliefs. This disparity affects the rate of learning as well as how the two evaluate the expected distribution of future outcomes which in turn affects their evaluation of future payoffs. Placing minimal restrictions on how effort and the parameter interact, I derive necessary and sufficient conditions for incentive compatible contracts. In addition to the agent's promised utility, the covariance between the on-path posterior beliefs and the agent's total payoff serves as a second state variable capturing the marginal long-run effects of effort.
研究了一个连续时间的委托-代理模型,其中未知参数和代理的隐藏努力影响可观察结果的分布。委托人和代理人通过观察过去的结果来了解参数。通过信念动力,代理人当前的努力具有隐性的长期影响,而努力的偏差会在委托人和代理人的信念之间产生持续的差异。这种差异影响了学习的速度,也影响了双方如何评估未来结果的预期分布,进而影响了他们对未来收益的评估。通过对努力和参数相互作用的最小限制,我得出了激励相容契约的充分必要条件。除了代理人的承诺效用之外,在路径上的后验信念与代理人的总收益之间的协方差作为第二个状态变量,捕获了努力的边际长期效应。
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引用次数: 0
Constrained Listening, Audience Alignment, and Expert Communication 约束倾听、听众对齐和专家沟通
Pub Date : 2017-11-09 DOI: 10.2139/ssrn.3068376
Kevin C. Smith, M. Heinle, Paul E. Fischer
We consider a cheap talk setting with two senders and a continuum of receivers with heterogenous preferences. Receivers listen to just one sender, but can choose which sender to listen to. We determine that: (i) full communication is possible for a large set of sender preferences; (ii) both senders attract listeners only if they are oppositional and not too polarized; and (iii) senders with preferences that are closer to the average receiver preference are listened to by a greater proportion of receivers. In extensions, we endogenize the senders’ preferences and investigate the effects of an entertainment benefit derived by receivers.
我们考虑一个有两个发送者和一个连续的具有异质偏好的接收者的廉价谈话设置。接收方只监听一个发送方,但可以选择监听哪个发送方。我们确定:(i)对于大量发送方偏好,完全通信是可能的;(ii)只有在对立且不太两极分化的情况下,两个发送者才能吸引听众;(iii)偏好更接近平均接收者偏好的发送者会被更大比例的接收者倾听。在扩展中,我们将发送者的偏好内化,并研究接收者获得的娱乐利益的影响。
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引用次数: 2
期刊
ERN: Other Microeconomics: Asymmetric & Private Information (Topic)
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