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Essays On Multi Item Auctions
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Book Synopsis Essays on Multi-item Auctions by : Rao Fu
Download or read book Essays on Multi-item Auctions written by Rao Fu and published by . This book was released on 2011 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this dissertation, I explore bidders' behavior in multiple auctions which are conducted sequentially or simultaneously. The first and the second chapters examine buyers' bidding behaviors in an environment of multiple simultaneous auctions and show that the wildly-used assumption of proxy bidding is inappropriate in the multiple auction setting. The first chapter proposes two models which try to describe online auction platforms. One model has a fixed ending time and the other does not. I show that incremental bidding strategy can arise out of equilibrium and weakly dominate the proxy bidding strategy. Late bidding is also discussed. I use the data I collect from eBay to test these theoretical predictions in the second chapter. The estimation results basically support the theory part. Incremental bidders who switch among different auctions are more likely to win and have higher payoffs than proxy bidders. The third essay studies the procurement auctions in the Texas school milk market. I define score functions to map the bids from multiple dimensions to one dimension and analyze the factors that may affect the bids of school milk suppliers. After considering the impacts of these factors including backlogs and cost synergies, I can still find some evidences for existence of collusion among the bidders.
Book Synopsis Essays on Continuous Time Multi-item Auctions by :
Download or read book Essays on Continuous Time Multi-item Auctions written by and published by . This book was released on 2015 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: I compare, for the first time, how the two most popular multi-item auction formats used to allocate online ad space (Vickrey-Clarke-Groves and Generalized Second Price) perform in real time markets. Comprehensive laboratory sessions using proprietary software suggest that the Vickrey-Clarke-Groves mechanism outperforms the Generalized Second Price auction with respect to efficiency across all treatments. This difference is economically significant for more competitive parameter configurations and is statistically significant for most treatments. Revenue capture across treatments tends to be roughly similar between auction formats. Overall, theoretical predictions made in papers by Varian (2007) and Edelman, et al. (2007) seem to organize the data well.
Book Synopsis Essays on Multi-unit Auctions by : Jinsoo Bae (Ph. D. in economics)
Download or read book Essays on Multi-unit Auctions written by Jinsoo Bae (Ph. D. in economics) and published by . This book was released on 2020 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chapter 3 studies a pro-competitive effect of joint bidding in multi-unit uniform price auctions where bidders have private values and demand different quantities of units. I analyze a simple model with three identical items for sale, two small bidders each demanding a single unit, and a big bidder demanding two units. I show that joint bidding of the two small bidders, which recovers the symmetry of bidders, enhances competition among the bidders and increases efficiency and revenue of the auction.
Book Synopsis Essays in Industrial Organization: Entry in Multi-Object Auctions and Freemium Packages in Two-sided Markets by : Renato Zaterka Giroldo
Download or read book Essays in Industrial Organization: Entry in Multi-Object Auctions and Freemium Packages in Two-sided Markets written by Renato Zaterka Giroldo and published by . This book was released on 2019 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the first two chapters of this dissertation, I study the design of multi-object auctions. Using a large data set from the Brazilian public procurement sector, I show evidence that entry is costly and that the mix of products being auctioned off is a first-order effect to understand firm participation. In the first chapter, I find evidence that the data is consistent with a theory of selection. The average entrant has a higher product match with the session, and they are closer to auction locations. Distance affects entry decisions negatively: a 1 unit (100km) increase in the distance to the auction location lowers the odds ratio for entry 0.91 times. At the same time, an additional auction in the set of potential auctions of a firm increases the odds for entry 1.62 times. In terms of variable costs, a 1% increase in the distance to the auction location increases bid by 0.4% to 3.3%. There are also gains of scale in terms of the size of the contracts: a 1% increase in the contract quantity for a given product increases bids by 0.64% to 0.76%. The main force responsible for lowering procurement costs is the presence of additional bidders. I find that an extra bidder can lower costs between 21.2% and 32.4%. These results motivate and feed into the structural model presented in chapter 2. In the second chapter, I continue to analyze this market with the focus on estimating entry costs and answering policy questions. To do so, I build a novel model of endogenous entry in multi-object auction sessions that allows me to disentangle two forces that affect entry decisions: entry costs, and the menu of items of a given session. The model has two stages. In the first stage, firms decide whether to enter an auction session and pay a fixed cost after observing an imperfect signal of their true cost. In the second stage, both the items for which they can bid and their costs are realized, and the auction takes place. I focus the analysis on type symmetric equilibria, where bidders of the same type follow the same entry strategy. In equilibrium, marginal bidders make zero profits. This condition allows me to link the unobserved entry costs to the observed bid behavior of entrants. Having derived the equilibrium of the model, I estimate model fundamentals and turn to policy questions. The estimates provide evidence that entry is more attractive to local firms. I find that their cost distribution stochastically dominates the one from non-local firms. Moreover, conditioned on the number of items a firm can participate in, non-local firms face between 3.9% to 6.5% higher entry costs than local firms. I focus on two counterfactual simulations. In the fully efficient scenario, where firms do not incur any entry costs, I find that procurement costs would be lowered by 22.5% to 40.1%. These are bounds on the maximum cost savings and also quantifies the degree of inefficiency present in this market. The second counterfactual is a partially efficient scenario, where non-local firms face the same entry costs as local firms. This analysis focuses on a selected equilibrium where firms enter the sessions sequentially. Firms are sorted according to a lexicographic order which is determined by the strength of their signal, number of items, and firm type (non-local/local). I find that procurement costs would be lowered by 2.8% to 2.9%. Thus, on this type of equilibrium and by holding on-site auctions, the government indirectly sacrificed some efficiency to the benefit of local firms. In the third chapter, I study the pricing of platforms that offer consumers the choice between a free package, in which consumers are exposed to advertising, and a premium package, in which they pay to not be exposed to advertisements. I characterize its profit-maximizing and Pigouvian pricing, which allows me to analyze the degree to which the platform incorporates consumers' distaste for advertising in its pricing scheme, as well as the trade-offs that emerge between the free and paid packages. The results contribute to the discussion of consumers' overexposure to advertising when platforms behave as a social planner and maximize their value.
Book Synopsis Bidding Behaviour in Multi-Unit Auctions by : Rebecca Catherine Elskamp
Download or read book Bidding Behaviour in Multi-Unit Auctions written by Rebecca Catherine Elskamp and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis contains three essays on the topic of bidding behaviour in multi-unit auctions. The first essay develops and experimentally tests multi-unit auction theory to identify the effects of "scaling up" multi-unit auction environments on individual bidding behaviour. A uniquely tractable environment is developed that leads to the construction of uniform auctions of different scales, where the prediction is that risk neutral bidders' bids on the last unit they demand are independent of scale. Two main effects were observed in the experimental data. Regardless of scale, bidders were found to bid more aggressively than predicted by the theory. Secondly, small scale effects were observed, as bids were more aggressive in the small scale relative to the larger scale treatment. The theoretical consequences of risk aversion, joy of winning, and anticipated regret are analyzed to explain these deviations from predictions. The second essay provides empirical evidence on how economic agents converge to optimality. Learning direction theory is applied to bidding behaviour from the Ontario dairy quota auction, following a change in pricing rule from uniform to discriminatory. Two dimensions of bidding behaviour are examined at the individual bidder level, bid prices and number of price-quantity bid pairs. Adjustments in bidding behaviour are broadly consistent with the ex-post rationality. Experience acquired under the discriminatory pricing rule is found to have diminishing effects on adjustments made to bidding behaviour, consistent with bidders converging towards optimality. The third essay examines the effect of two simultaneous policy changes, implemented in the Ontario dairy quota auction, to determine whether these changes were successful in achieving performance goals. Results of a series of regression models indicate that these two policy changes had no effect on clearing prices. Rather, these two policy changes were found to significantly reduce revenue from quantity purchased, total quantity transferred and total quantity offered. The combination of a significant reduction in bid prices and individual quantity demanded, paralleled by an increase in individual quantity offered appears to have been the underlying mechanisms, in terms of individual bidding/offering behaviour, through which the these two policies failed to meet performance goals.
Book Synopsis Three Essays on Multi-round Procurement Auctions by : Lu Ji
Download or read book Three Essays on Multi-round Procurement Auctions written by Lu Ji and published by . This book was released on 2006 with total page 113 pages. Available in PDF, EPUB and Kindle. Book excerpt: My dissertation contributes to auction studies. It analyzes the bidding behavior in multi-round auctions. It is motivated by an interesting multi-round feature observed in the procurement auctions held by the Indiana Department of Transportation (INDOT hereafter), which adopts secret reserve prices. Prior research has indicated that auctions with reserve prices usually lead to no trade. However, prior research has not paid much attention to the possibility that the seller can auction unsold objects from previous rounds and a trade is therefore still likely to occur. My dissertation provides new theoretical and empirical analyses of auctions with multiple rounds. It first develops a game-theoretic bidding model for the multi-round auctions with non-forward looking bidders. It then establishes a structural econometric model in order to conduct a structural analysis of the INDOT data. Lastly it introduces dynamic features into the model by assuming that bidders are forward looking and uses a dynamic control approach to analyze the bidding behavior and policy issues. The main findings are: (1) rational bidders reduce their markup across periods in multi-round auctions; (2) simulations show that using secret reserve price is sometimes better than public reserve price for the procurement auctioneer; (3) counterfactual analyses indicate that on one hand, when bidders are not forward looking, it is better for the INDOT to use a secret reserve price; on the other hand, when bidders are forward looking, it is better for the INDOT to use a secret reserve price when the discount factor is low and to use a public reserve price when the discount factor is sufficiently high.
Book Synopsis Large-scale Multi-item Auctions by : Sascha Michael Schweitzer
Download or read book Large-scale Multi-item Auctions written by Sascha Michael Schweitzer and published by KIT Scientific Publishing. This book was released on 2014-10-16 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents two experimental studies that deal with the comparison of multi-item auction designs for two specific applications: the sale of 2.6 GHz radio spectrum rights in Europe, and the sale of emissions permits in Australia. In order to tackle the complexity of these experiments, a cognitively based toolkit is proposed, including modularized video instructions, comprehension tests, a learning platform, a graphical one-screen user interface, and comprehension-based group matching.
Book Synopsis Three Essays on Auction Theory by : Xiaoshu Xu
Download or read book Three Essays on Auction Theory written by Xiaoshu Xu and published by . This book was released on 2011 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: My dissertation consists of three chapters in theoretical auction analysis. The first chapter considers optimal sequential auctions with new bidders arriving in each period. The second chapter examines how resale affects bidding strategies and auction outcomes in an auction environment with costly entry. The third chapter investigates how resale affects bidding strategies and auction outcomes in a sequential auction setting where the values of items auctioned in different periods exhibit synergies. The first chapter gives a full characterization of the optimal sequential second-price (or ascending English) auctions with sequentially arriving bidders. There are n bidders in the first period and m new bidders arrive in the second period. Based on the auctioneer's commitment power, we study two cases: full commitment and noncommitment. In both cases, we establish the existence of a symmetric equilibrium characterized by a threshold strategy - -a bidder does not bid in the first auction when her valuation is below this threshold and bids according to an increasing function otherwise. In the noncommitment case, the auctioneer chooses an optimal reserve price to maximize the expected revenue from the second period; thus her decision of whether to include previous bidders as potential buyers is endogenously determined by the reserve price in the first auction. This might create multiple equilibria depending on the beliefs of the auctioneer and the bidders. We apply a fairly intuitive rule to establish the uniqueness. We also extend our analysis to allow for opportunities for resale, where the winner in the first auction can opt to resell the item to new bidders. The second chapter, joint with Dan Levin and Lixin Ye, studies how resale affects auctions with costly entry in a model where an arbitrary number of bidders possess two-dimensional private information signals: entry costs and valuations. We establish the existence of symmetric entry equilibrium and identify sufficient conditions under which the equilibrium is unique. Our analysis suggests that the opportunity of resale induces motivation for both speculative entry and bargain hunting abstentions. By following the uniform distribution for numerical analysis, our results suggest that while the entry probability and efficiency are always higher when resale is allowed, the auctioneer's expected revenue is lower when resale is allowed for almost all parameter values. We also compare this model to one where bidders may follow "strong" or "weak" distributions in terms of valuations. The third chapter, joint with Dan Levin and Lixin Ye, studies a sequential second-price auction of two objects with two bidders, where the winner of the package obtains a synergy from the second object. If reselling after the two auctions occurs, it proceeds as either monopoly or monopsony take-it-or-leave-it offer. I find that a post-auction resale has a significant impact on bidding strategies in the auctions. When seller makes a take-it-or-leave-it offer in resale, there is no equilibrium where at least one bidder reveals her type with positive probability. When buyer makes the offer instead, there exist symmetric increasing equilibrium strategies for both items. While allowing resale always improves efficiency, I demonstrate that the effect of resale is ambiguous on expected revenue as Ill as the probability of exposure. I also extend this model to allow for three bidders and provide the equilibrium analysis.
Book Synopsis Essays in Multi-unit Auction Theory by : David Lloyd McAdams
Download or read book Essays in Multi-unit Auction Theory written by David Lloyd McAdams and published by . This book was released on 2001 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Empirical Essays on the Efficiency of Heterogeneous Good Auction by : Thomas A. Martin (IV.)
Download or read book Empirical Essays on the Efficiency of Heterogeneous Good Auction written by Thomas A. Martin (IV.) and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A recent pursuit of the auction design literature has been the development of an auction mechanism which performs well in a multi-good setting, when the goods are not substitutes. This work began in earnest with the Federal Communications Commission spectrum license auctions in the early nineties and continues to this day. In a setting in which goods are not substitutes, the value of one good depends non-negatively on the quantities of other goods that are won. This type of interdependent value structure has proven difficult to account for in auction design. However, the need for mechanisms that account for such a value structure hinges on the magnitude of the interdependence, whose computation is an empirical exercise. I identify a setting in which to perform this computation. I develop an empirical methodology that allows me to recover bidders' value functions in a multi-good auction setting. This methodology allows me to assess the magnitude of any interdependence in the goods? value structure. Since the auction setting that I analyze is a variation of the standard uniform price auction, which has been adapted for a multi-good setting, I am able to measure the benefit of having a direct revelation mechanism. This counterfactual study is performed by maximizing the value of the auction using the recovered bidder value functions. I find evidence that there is an interdependent value structure in the setting. The counterfactual auction finds that the standard uniform price auction, adapted to a multi-good setting, performs poorly in the presence of such a value structure. The setting for this analysis is an auction for financial transmission rights held in Texas in 2002. The auction involved twenty two firms and collected almost $70 million in revenue. This research is the first to empirically assess efficiency in this type of auction setting.
Book Synopsis Three Essays on Auction Markets by : Nicholas James Shunda
Download or read book Three Essays on Auction Markets written by Nicholas James Shunda and published by . This book was released on 2008 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Sponsored Search and Sequential Auctions by : Emmanuel Lorenzon
Download or read book Sponsored Search and Sequential Auctions written by Emmanuel Lorenzon and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis is a collection of three essays in theoretical auction analysis. Chapter 1 considersbid delegation in the GSP auction mechanism. In a game involving side-contracts and a compensationpolicy set by an agency, the first-best collusive outcome is achieved. We offer a characterization of the implementablebid profiles for the two-position game with three players. Chapter 2 considers the sequentialsale of an object to two buyers: one knows his private information and the other buyer does not. Buyershave a multi-unit demand and private valuations for each unit are perfectly correlated. An asymmetricequilibrium exists when the uninformed player adopts an aggressive bidding strategy. Conversely, hisinformed opponent behaves more conservatively by using bid shading. The bidding behaviour of theuninformed bidder is driven by the opportunity to learn his private valuation for free. This dynamic is atthe root of the decline in the equilibrium price across both sales. In chapter 3, information is observableduring the first-stage auction in a sequential-move game in which the first-mover bidder is observed byhis opponent. A separating equilibrium exists in which the informed bidder bids aggressively when he isthe first-mover which entails a non-participation strategy from his uninformed competitor. Conversely,the latter adopts a conservative behaviour when he is the first-mover. A pooling equilibrium in which theinformed bidder blurs his valuation can only exist if his uninformed opponent adopts a non-participatingstrategy.
Book Synopsis Three Essays in Empirical Auctions by : Sudip Gupta
Download or read book Three Essays in Empirical Auctions written by Sudip Gupta and published by . This book was released on 2005 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Three Essays on Mechanism Design and Multi-object Auctions by : Veronika Grimm
Download or read book Three Essays on Mechanism Design and Multi-object Auctions written by Veronika Grimm and published by . This book was released on 2003-01-01 with total page 101 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Essays on Almost Common Value Auctions by : Susan L. Rose
Download or read book Essays on Almost Common Value Auctions written by Susan L. Rose and published by . This book was released on 2006 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: In a common value auction, the value of the object for sale is the same to all bidders. In an almost common value auction, one bidder, the advantaged bidder, values the object slightly more than the other, regular bidders. With only two bidders, a slight advantage is predicted to have an explosive effect on the outcome and revenue of an auction. The advantaged bidder always wins and revenue decreases dramatically relative to the pure common value auction. Ascending auctions, which reduce to two bidders, are thought to be particularly vulnerable to the explosive effect, which may discourage entry. My dissertation investigates the explosive effect in experimental English clock auctions. The first essay, "An Experimental Investigation of the Explosive Effect in Almost Common Value Auctions," uses a two-bidder wallet game to test these predictions. I find the effect of an advantage to be proportional, not explosive, confirming past studies. I develop a behavioral model that predicts the proportional effect and test it against the data. The model has two types of bidders: naïve and sophisticated. Naïve bidders use a rule of thumb bidding function while sophisticated bidders are fully rational and account for the probability that a rival is naïve or sophisticated when best responding. I was able to classify subjects as naïve or sophisticated, and those classified as sophisticated do have a better understanding of the game. However, all subjects suffered from the winner's curse, which may have masked the explosive effect and been exacerbated by the structure of the wallet game. The second essay, "Bidding in Almost Common Value Auctions: An Experiment," moves the analysis to a four bidder auction to directly test the entry predictions. I used a more intuitive common value structure and controlled for the winner's curse by using subjects with prior experience in common value auctions. I found that although subjects did not suffer from the winner's curse, there is no evidence of an explosive effect. Advantaged bidders won no more auctions than predicted by chance. Entry and auction revenue were unaffected by the presence of advantaged bidders.
Book Synopsis Three Essays on All-pay Auctions by : Minbo Xu
Download or read book Three Essays on All-pay Auctions written by Minbo Xu and published by . This book was released on 2013 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: The dissertation includes three research papers on all-pay auctions. The first paper (Chapter 1) considers an all-pay auction for a product in which there is an option for bidders to guarantee purchases at a seller specified posted price P at any time. We find the symmetric pure-strategy equilibria in the first- and second-price all-pay auctions (also called war of attrition) with a buy-price option. Under these equilibria the buy-price option will affect high-value bidders' behavior, and improve their welfare. At the same time, the seller can select the optimal posted price to collect more revenue, and the Revenue Equivalence Theorem holds as well. The second paper (Chapter 2) conducts empirical analysis on online penny auctions, which are seen as an adaptation of the famous dollar auction and as "the evil stepchild of game theory and behavioral economics." We use the complete bid and bidder history at a website to study if penny auctions can sustain excessive profits over time. The overwhelming majority of new bidders lose money, but they quit quickly. A very small percentage of bidders are experienced and strategically sophisticated, but they earn substantial profits. Our evidence thus suggests that penny auctions cannot sustain excessive profits without attracting a revolving door of new customers who will lose money. The third paper (Chapter 3) proposes a nonparametric estimation approach to empirical analysis of the war of attrition. In order to construct a tractable model, we consider the uncertain competition and derive a structural model with a stochastic number of bidders. We admit the contamination from observables and introduce a deconvolution problem with heteroscedastic errors into the nonparametric approach. By a two-step nonparametric procedure, we can attain a consistent estimator of the distribution of bidders' private values from the observables. Finally, we apply the estimation procedure to field data from penny auctions.
Book Synopsis Essays in Honor of Cheng Hsiao by : Dek Terrell
Download or read book Essays in Honor of Cheng Hsiao written by Dek Terrell and published by Emerald Group Publishing. This book was released on 2020-04-15 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: Including contributions spanning a variety of theoretical and applied topics in econometrics, this volume of Advances in Econometrics is published in honour of Cheng Hsiao.
