Designing electricity auctions

Motivated by the new auction format in the England and Wales electricity market, as well as the recent debate in California, we characterize bidding behavior and market outcomes in uniform and discriminatory electricity auctions. Uniform auctions result in higher average prices than discriminatory auctions, but the ranking in terms of productive efficiency is ambiguous. The comparative effects of other market design features, such as the number of steps in suppliers' bid functions, the duration of bids, and the elasticity of demand are analyzed. We also consider the relationship between market structure and market performance in the two auction formats.     

Complements and substitutes in sequential auctions: the case of water auctions

We use data on sequential water auctions to estimate demand when units are complements or substitutes. A sequential English auction model determines the estimating structural equations. When units are complements, one bidder wins all units by paying a high price for the first unit, thus deterring others from bidding on subsequent units. When units are substitutes, different bidders win the units with positive probability, paying prices similar in magnitude. We recover individual demand consistent with this stark pattern of outcomes and confirm it is not collusive but consistent with noncooperative behavior. Demand estimates are biased if one ignores these features.     

Collusion in uniform-price auctions: experimental evidence and implication for treasury auctions

We provide experimental evidence that nonbinding preplay communicationbetween bidders in auctions of shares facilitates the adoptionof equilibrium strategies: collusive strategies in uniform-priceauctions, and the unique equilibrium in undominated strategiesin discriminatory auctions. When communication between biddersis introduced, clearing prices and auctioneer profits in uniform-priceauctions fall below those observed in discriminatory auctions.This evidence suggests that uniform-price auctions of Treasurysecurities may result in lower revenues than the currently employeddiscriminatory procedure.     

IPO auctions and private information

IPO auctions, which provide an impartial way of determining IPO pricing and share allocations, offer a natural setting for examining whether institutional investors possess private information, and for measuring how valuable their information is. Analyzing detailed bidding data from Taiwan’s discriminatory (pay-as-bid) auctions, we find that, relative to retail investors, institutional investors tend to bid higher in auctions when IPO shares are more valuable, and that underpricing is larger in auctions with relatively higher institutional bids. These results imply that institutional investors are better informed about IPO value, and that they obtain higher information rents when they bid higher relative to retail investors. We estimate the value of institutional investors’ private information to be worth about 8.68% of return, which is the extra rate of return they command on their informational advantages over retail investors.     

Automatic bankruptcy auctions and fire-sales

We test for fire-sale tendencies in automatic bankruptcy auctions. We find evidence consistent with fire-sale discounts when the auction leads to piecemeal liquidation, but not when the bankrupt firm is acquired as a going concern. Neither industry-wide distress nor the industry affiliation of the buyer affect prices in going-concern sales. Bids are often structured as leveraged buyouts, which relaxes liquidity constraints and reduces bidder underinvestment incentives in the presence of debt overhang. Prices in “prepack” auctions (sales agreements negotiated prior to bankruptcy filing) are on average lower than for in-auction going-concern sales, suggesting that prepacks may help preempt excessive liquidation when the auction is expected to be illiquid. Prepack targets have a greater industry-adjusted probability of refiling for bankruptcy, indicating that liquidation preemption is a risky strategy.     

Regulating bidder participation in auctions

Regulating bidder participation in auctions can potentially increase efficiency compared to standard auction formats with free entry. We show that the relative performance of two such mechanisms, a standard first‐price auction with free entry and an entry rights auction, depends nonmonotonically on the precision of information that bidders have about their costs prior to deciding whether to participate in a mechanism. As an empirical application, we estimate parameters from first‐price auctions with free entry for bridge‐building contracts in Oklahoma and Texas and predict that an entry rights auction increases efficiency and reduces procurement costs significantly.     

Closing call auctions and liquidity

The present paper examines the impact of closing call auctions on liquidity. It exploits the natural experiment offered by the introduction of a closing call auction on the Australian Stock Exchange on 10 February 1997. The introduction of the closing call auction is associated with a reduction in trading volume at the close of continuous trading. However, bid‐ask spreads during continuous trading are largely unaffected by the introduction of the closing call auction. Therefore, closing call auctions consolidate liquidity at a single point in time without having any adverse effect on the cost of trading.     

Clearing price distributions in call auctions

We propose a model for price formation in financial markets based on the clearing of a standard call auction with random orders, and verify its validity for prediction of the daily closing price distribution statistically. The model considers random buy and sell orders, placed employing demand- and supply-side valuation distributions; an equilibrium equation then leads to a distribution for clearing price and transacted volume. Bid and ask volumes are left as free parameters, permitting possibly heavy-tailed or very skewed order flow conditions. In highly liquid auctions, the clearing price distribution converges to an asymptotically normal central limit, with mean and variance in terms of supply/demand-valuation distributions and order flow imbalance. By means of simulations, we illustrate the influence of variations in order flow and valuation distributions on price/volume, noting a distinction between high- and low-volume auction price variance. To verify the validity of the model statistically, we predict a year's worth of daily closing price distributions for five constituents of the Eurostoxx 50 index; Kolmogorov–Smirnov statistics and QQ-plots demonstrate with ample statistical significance that the model predicts closing price distributions accurately, and compares favourably with alternative methods of prediction.     

The absorption effect of US Treasury auctions

An event study methodology shows that the relative yields of off-the-run Treasury securities are not insulated from the effects related to the auction calendar. A statistically significant but short-lived increase in relative yields is associated with the introduction of additional cashflows at corresponding and neighboring horizons. This absorption effect, where the additional supply of cashflows is associated with lower prices, is identified separately from the liquidity effect, where newly auctioned issues obtain higher prices. While sensitive to the specification of event window, an analogous methodology employed for on-the-run bonds, finds a 1-day negative effect at the benchmark 5-, 10-, and 30-year horizons.     

An analysis of FDIC failed bank auctions

This paper examines whether the sales mechanism used by the FDIC in failed bank auctions results in wealth transfers from the FDIC to the acquiring banks. We test this hypothesis by examining the returns to winning bidders in FDIC auctions. We find positive abnormal returns to these bidders. More importantly, we find a negative and significant relation between the returns to winning bidders and the number of bidders participating in the auction. This evidence suggests that the FDIC's auction procedures do generate wealth transfers.     

Information feedback in first price auctions

I apply the notion of a self‐confirming equilibrium (SCE) to study how feedback in first price auctions influences bidders' perceptions about their strategic environment, and consequently their bidding behavior. In a private values setting, revealing the two highest bids at the end of each auction is sufficient for bidders to have correct beliefs (justifying the assumption of Nash equilibrium). In contrast, in every symmetric SCE of a symmetric, affiliated, private values model, bidding strategies and revenue are (weakly) higher if only the highest bid is revealed. I also consider interdependent valuations and discuss implications for the empirical auction literature.     

Regulatory learning in failed thrift auctions

We use a sample of failed thrift auctions to examine if regulators learn from early transactions and improve their performance in later transactions. Our findings suggest that experience at failure resolution does not by itself lead to improved regulatory performance. Evidence of regulatory learning is restricted to dealings with repeat acquirers; in cases where an acquiring firm makes abnormal gains, regulators are able to restructure the auction process and eliminate such gains in subsequent acquisitions made by the same acquirers.     

Timing of bids at pooled real estate auctions

When many similar properties are being auctioned, auctioneers often resort to the pooled design. The winning bidder of a given round is given a choice among all the unclaimed (pooled) properties. Bidding strategy depends on expectations of rival bidders' behavior as well as personal valuation. Anecdotal evidence from condominium auctions suggests that bidding decisions can produce price anomalies. This study develops a simple theoretical model with three active bidders and three units for sale to show how such anomalies may emerge. Estimation is then made of a hedonic price model using data from a condominium auction of 53 units on three separate dates. The empirical results support the view that the best buys are found in the middle of the auction with overpayments at the beginning and end.     

The impact of auctions on residential property prices

This study assesses whether the sale method in residential real estate markets – auction versus private treaty – is a determinant of sale price. Utilising a larger and richer dataset than previous research, we test for a price effect in auction sales in Sydney and Christchurch. When self‐selection biases are corrected for, using two‐stage hedonic regression analysis and a matched sampling procedure, we find no significant difference between prices of properties sold at auction to those sold by private treaty. This conflicts with the conclusions of previous research in the Australian and New Zealand housing markets, which have documented a price premium associated with auction sales.     

Estimation in English auctions with unobserved heterogeneity

We propose a framework for identification and estimation of a private values model with unobserved heterogeneity from bid data in English auctions, using variation in the number of bidders across auctions, and extend the framework to settings where the number of bidders is not cleanly observed in each auction. We illustrate our method on data from eBay Motors auctions. We find that unobserved heterogeneity is important, accounting for two thirds of price variation after controlling for observables, and that welfare measures would be dramatically misestimated if unobserved heterogeneity were ignored.     

Unobserved heterogeneity and reserve prices in auctions

This article shows how reserve prices can be used to control for unobserved object heterogeneity to identify and estimate the distribution of bidder values in auctions. Reserve prices are assumed to be monotonic in the realization of unobserved heterogeneity, but not necessarily set optimally. The model is estimated using transaction prices from a used car auction platform to show that the platform enables sellers to capture a large fraction of the potential value from selling their vehicle. Individual sellers benefit mostly from access to a large set of buyers, but the magnitude depends on accounting for unobserved heterogeneity.     

On absolute auctions and secret reserve prices

From a theory viewpoint, the use of auctions with zero public reserve prices, also called absolute auctions, or of auctions with secret reserve prices, is somewhat puzzling despite being common. By allowing that buyers differ in their processing of past data regarding how the participation rate varies with the auction format and how reserve prices are distributed when secret, we show in a competitive environment that these auction formats may endogenously emerge. We also analyze how buyers with various sophistications and sellers with various costs sort into the different formats, thereby offering a range of testable predictions. Alternative approaches are reviewed.     

Revenue and optimality in unequal-sized share auctions

This paper analyzes unequal-sized share auctions with symmetric private-value buyers. The property that each buyer can win at most one unit, but variable-sized, makes share auctions situated between single-unit auctions and multiunit auctions. We calculate revenue and optimality of efficient share auctions and discuss how the optimal reserve valuation varies according to risk attitude towards share size.     

Ordering,revenue and anchoring in art auctions

We estimate the effect of ordering by value on revenues in sequential art auctions held by Sotheby's and Christie's. We exploit a pre determined rotation of which of these two houses holds their auction first during auction week in New York City. When the house that goes first has relatively expensive paintings compared to the other house, we find that the sale premium for the week is around 21% higher relative to the mean sale premium, and the fraction of paintings sold during the week is around 11% higher. We provide evidence that this is due to an anchoring effect.     

Procurement under public scrutiny: auctions versus negotiations

We compare two commonly used mechanisms in public procurement: auctions and negotiations. The execution of the procurement mechanism is delegated to an agent of the buyer. The agent has private information about the buyer's preferences and may collude with one of the sellers. We provide a general characterization of both mechanisms based on public scrutiny requirements and show—contrary to conventional wisdom—that an intransparent negotiation always yields higher social surplus than a transparent auction. Moreover, there exists a lower bound on the number of sellers such that the negotiation also generates a higher buyer surplus.