Asymmetric Cost Pass-Through in Multi-Unit Procurement Auctions: An Experimental Approach*

We explore input cost pass-through in multi-unit procurement auctions. Whether cost shocks are private versus common across firms has important implications for discriminatory, but not uniform price auctions. We provide evidence of asymmetric pass-through of private cost shocks in discriminatory auctions. Unlike uniform price auctions, revenue-maximizing bidders in discriminatory auctions ‘pad’ bids close to the expected clearing price for units with costs below that price, but they do not bid below cost on higher cost units. Therefore, if costs are higher than expected, the clearing price rises and if costs are lower than expected, the clearing price remains high.     

Construction Procurement Auctions: Do Entrant Bidders Employ More Aggressive Strategies than Incumbent Bidders?

Asymmetric auction theory predicts that weak bidders will bid more aggressively when facing strong bidders, while strong bidders will bid less aggressively when facing weak bidders. This paper finds empirical evidence to support this hypothesis regarding the behavior of weak bidders in construction auctions. Examining a comprehensive data set of more than 7,500 Utah construction procurement auctions, we find that entrants bid more aggressively than do incumbents for most subcontractor types. Reflecting their inexperience and uncertainty regarding the true cost of projects, entrants’ bids are found to be more widely dispersed around the central tendency of bids.     

Entry and Bidding in Common and Private Value Auctions with an Unknown Number of Rivals

In many procurement auctions bidders do not know how many rivals they face at the time that they incur the cost of preparing their bids. We show in a theoretical model that regardless of whether the procurement is characterized by private or by common values an increase in the potential number of bidders may lead to higher procurement costs. This raises potential policy questions of whether and how entry should be encouraged or limited in public procurement auctions. We use evidence from auctions of construction contracts to estimate the effect of an increase in the pool of potential bidders on entry and auction prices when entry and bidding decisions are made sequentially with no knowledge of the number or identity of the actual competitors.     

On Strategic Quantity Bidding in Multiple Unit Auctions

Standard studies of multiple unit auctions generally overlook the strategic role of bidders' quantity decisions. Using a simple equilibrium model of bidding I analyze bidders' incentives to choose quantities in discriminatory and competitive auctions. The main result is that bidders have a stronger strategic incentive to bid for fewer units in competitive auctions. Since under competition a bidder pays the lowest accepted price for each unit she gets, she may benefit from dropping her quantity to let lower-valuing bidders enter the set of winners. This prediction is consistent with empirical observations from foreign currency and spectrum auctions.     

Auction Reforms for Effective Official Development Assistance

Auctions, which are applicable to aid-related procurement systems, have been recently recognized as an important tool for improving economic efficiency. Using data on procurement auctions for Japanese official development assistance projects, the equilibrium bid function is estimated. The data reveals that a 1% increase in the number of bidders decreases the equilibrium bid by about 0.2%. This implies that strengthening competition at procurement auctions lowers contract prices and mitigates the heavy indebtedness of developing countries. Auctions are also instrumental in fostering local business environment and governance. For intensifying bidding competition, it is useful to introduce an electronic bidding system, encourage local firms to jointly bid, and relax excessive qualification requirements.     

Effects of Minimum Bid Increments in Internet Auctions: Evidence from a Field Experiment

I study the role of minimum bid increments (MBI) in internet auctions using natural field experiment data from a Finnish online auction site Huuto.net. Internet auctions are typically viewed as second‐price, implying truthful bidding. However, due to the presence of the MBI, equilibrium bidding behavior involves bid shading. I sell otherwise identical gift cards while varying the MBI and test between truthful bidding and bid shading. Truthful bidding is rejected. Consistently with equilibrium behavior, bid shading increases as the MBI increases. This implies that real‐world bidders are capable of reacting rationally even to seemingly small variations in their strategic environment.     

Single Bidders and Tacit Collusion in Highway Procurement Auctions

Collusion in auctions can take different forms, such as refraining from bidding. Certain aspects of highway procurement auctions facilitate collusive outcomes. We collect data on asphalt paving auctions conducted in Kentucky from 2005-2007. We determine the potential service area of each asphalt plant and potential bidders for each paving project. We analyze firms’ bid participation decisions, including variables affecting costs as well as competitive and strategic effects. In many geographic markets where firms face only a few identifiable rivals, county boundaries serve as a coordinating mechanism for softening competition, significantly influencing firms’ decisions whether and how much to bid.     

Optimal sequential auctions

Sequential sealed first-price and open descending-price procurement auctions are studied. We examine which procurement auction rule achieves the low procurement cost. We show that the answer to this policy question depends on whether the items are complements or substitutes. With substitutes, the first-price procurement auction is preferred, while with complements, the open descending-price procurement auction is preferred. We also illustrate the procurement cost minimizing auction and the auction rule preferred by the bidders. With substitutes, bidders prefer the open descending-price procurement auction, while with complements bidders prefer the first-price procurement auction.     

Bidder Asymmetry in Infrastructure Procurement: Are There any Fringe Bidders?

Asymmetric auctions are among the most rapidly growing areas in the auction literature. The potential benefits from intensified auction competition could be enormous in the public procurement context. Entrant bidders are considered a key to enhance competition and break potential collusive arrangements among incumbent bidders. Asymmetric auction theory predicts that weak (fringe) bidders would bid more aggressively when they are faced with a strong (incumbent) opponent. Using data from official development projects, this paper shows that entrants actually submitted aggressive bids in the presence of incumbent(s) in the road sector and to a certain extent in the water sector. For electricity projects, the general competition effect is found to be particularly significant, but the entrant effect remains unclear. The results suggest that auctioneers should foster competition in public procurement, including fringe bidders, to contain public infrastructure investment costs.     

Sorry Winners

Bidders who receive both “common-value” and “private-value” signals about the value of an auction prize cannot fully infer their opponents’ information from the bidding. So bidders may overestimate the value of the prize and, subsequently, regret winning. When multiple objects are on sale, bidding in an auction provides information relevant to the other auctions, and sequential auctions are more vulnerable to overpayment and winners’ regret than are simultaneous auctions. With information inequality among bidders, the seller’s revenue is influenced by two contrasting effects. On the one hand, simultaneous auctions reduce the winner’s curse of less informed bidders and allow them to bid more aggressively. On the other hand, sequential auctions induce less informed bidders to bid more aggressively in early auctions to acquire information.      

Auctions with bid credits and resale

Bid credits favoring subsets of bidders are routinely imposed on auctions and procurement auctions. These bid credits result in inefficient auction outcomes, which create pressure for post-auction resale or, in a procurement context, for subcontracting. We show that the presence of resale, in turn, affects bidding strategies in such a way that auction outcomes are more likely to be inefficient and less informative, making it harder for resale to correct inefficiencies. The negative effects of bid credits and resale can be mitigated through direct restrictions on resale, tight caps on credits, reserve prices, anonymous bidding, and enhanced competition.     

A Dynamic Model of Auctions with Buy‐It‐Now: Theory and Evidence

In the ascending‐price auctions with Yahoo!‐type buy‐it‐now (BIN), we characterize and derive the closed‐form solution for the optimal bidding strategy of the bidders and the optimal BIN price of the seller when they are both risk‐averse. The seller is shown to be strictly better off with the BIN option, while the bidders are better off only when their valuation is high enough. The theory also implies that the expected transaction price is higher in an auction with an optimal BIN price than one without a BIN option. This prediction is confirmed by our data collected from Taiwan's Yahoo! auctions.     

Reserve Prices in Repeated Auctions

This paper aims to estimate the effect of imposing a reserve price in repeated auctions of homogeneous items. I model the behavior of impatient bidders who search for the best auction outcome over time. The model is used to develop estimating equations for the bidders’ valuations, and to evaluate the effect of reserve prices on bids and revenue. Using data collected from surplus auctions of personal computer processors, I find economically significant gains from imposing a reserve price. The revenue-maximizing reserve price improves revenue by about 23% for a large subsample of the auctions in the data.     

Information disclosure in optimal auctions

This paper analyzes a situation in which the seller controls the accuracy of what potential buyers learn about their valuation of a good to be sold. This setting is related to many real situations such as home sales, antique auctions, and digital platforms such as Google and Facebook selling online advertising slots. Two important questions arise: what is the optimal selling mechanism, and what is the optimal disclosure policy of the seller. Under the assumption of private values, a simple auction with a reserve price is the optimal mechanism. What we show is that the amount of (costly) information provided increases with the number of potential bidders when using the optimal mechanism and is greater than when the object is always sold. Because information changes the distribution of a bidder’s expected valuations, the optimal reserve price also changes, so that the number of bidders (indirectly) affects the reserve price. We show that as the number of bidders increases, the optimal reserve price becomes more restrictive.     

Resident Bid Preference,Affiliation, and Procurement Competition: Evidence from New Mexico

In public procurement auctions, governments routinely offer preferences to qualified firms in the form of bid discounts. Previous studies on bid discounting do not account for affiliation – a form of cost dependence between bidders that is likely to occur in a public procurement environment. Utilizing data from the New Mexico Department of Transportation’s Resident Preference Program, I develop and estimate an empirical model of firm bidding and entry that allows for affiliation in firms’ project costs. I find evidence of affiliation and show how it changes preference auction outcomes.     

Price Formation Under Small Numbers Competition: Evidence from Land Auctions in Singapore

This article examines the price formation process under small numbers competition using data from Singapore land auctions. The theory predicts that bid prices are less than the zero-profit asset value in these first-price sealed-bid auctions. The model also shows that expected sales price increases with the number of bidders both because each bidder has an incentive to offer a higher price and because of a greater likelihood that a high-value bidder is present. The empirical estimates are consistent with auction theory and show that the standard land attributes are reflected in auction prices as expected.     

Competing for government procurement contracts: The role of corporate social responsibility

Research Summary: This study examines whether corporate social responsibility (CSR) improves firms’ competitiveness in the market for government procurement contracts. To obtain exogenous variation in firms’ social engagement, I exploit a quasi‐natural experiment provided by the enactment of state‐level constituency statutes, which allow directors to consider stakeholders’ interests when making business decisions. Using constituency statutes as instrumental variable (IV) for CSR, I find that companies with higher CSR receive more procurement contracts. The effect is stronger for more complex contracts and in the early years of the government‐company relationship, suggesting that CSR helps mitigate information asymmetries by signaling trustworthiness. Moreover, the effect is stronger in competitive industries, indicating that CSR can serve as a differentiation strategy to compete against other bidders. Managerial Summary: This study examines how companies can strategically improve their competitiveness in the market for government procurement contracts—a market of economic importance (15–20% of GDP). It shows that companies with higher social and environmental performance (CSR) receive more procurement contracts. This effect is stronger for more complex contracts, in the early years of the government–company relationship, and in more competitive industries. These findings indicate that firms’ CSR can serve as a signaling and differentiation strategy that influences the purchasing decision of government agencies. Accordingly, managers operating in the business‐to‐government (B2G) sector could benefit from integrating social and environmental considerations into their strategic decision making.     

Bidder asymmetries in procurement auctions: Efficiency vs. information – Evidence from railway passenger services

We estimate a structural model of procurement auctions with private and common value components and asymmetric bidders using detailed contract-level data on the German market for railway passenger services. Exploiting exogenous variation in the procurement design, we disentangle the asymmetries in private costs from asymmetries in information about the common value. While each asymmetry can rationalize a firm’s dominance, understanding its source is crucial for evaluating the auction design as welfare and revenue implications depend on the source of dominance. Our results indicate that the incumbent is slightly more cost-efficient and has substantially more precise information about the common value component. If the bidders’ strategic response to the common value asymmetry were eliminated, the average probability of selecting the efficient firm would increase by 43%-points.     

Procurement auctions with entry of bidders

In procurement auctions with a fixed number of bidders there is a tradeoff between cost efficiency and rent extraction. An optimal mechanism, therefore, entails distortions of effort (Laffont and Tirole, 1987). If potential suppliers must sink an entry investment before they can participate in the auction, then decreasing the firms' rent may imply reduced entry. We show that if potential bidders are uninformed before entry, commitment to a plain, nondistortive auction is optimal. In contrast, if potential bidders learn all their private information before entry, the optimal mechanism entails the same distortions as in Laffont and Tirole's static model.     

Competition in a Dynamic Auction Market: Identification,Structural Estimation,and Market Efficiency

The model incorporates an infinite series of auctions for identical items (or close substitutes) ordered over time and bidders with unit demand. The participants of each auction are drawn from a dynamic pool, with losing bidders remaining in the pool of potential bidders. The number of bidders in each auction is unobservable. Risk‐neutral, forward‐looking bidders submit bids below valuation. A novel identification and estimation strategy is used to estimate the valuation distribution from an order statistic of the bids. The model is used to evaluate the efficiency of online auctions for a 60GB Apple iPod Video, compared to a perfect‐competition benchmark.