Sealed-bid versus ascending spectrum auctions

Nicholas C. Bedard, Jacob K. Goeree, Philippos Louis and Jingjing Zhang
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Nicholas C. Bedard: University of Western Ontario
Jacob K. Goeree: UNSW
Jingjing Zhang: RMIT

Experimental Economics, 2024, vol. 27, issue 2, No 2, 299-324

Abstract: Abstract We compare the first-price sealed-bid (FPSB) auction and the simultaneous multiple-round auction (SMRA) in an environment based on the recent sale of 900 MHz spectrum in Australia. Three bidders compete for five indivisible items. Bidders can win at most three items and need to obtain at least two to achieve profitable scale, i.e. items are complements. Value complementarities, which are a common feature of spectrum auctions, exacerbate the “fitting problem” and undermine the usual logic for superior price discovery in the SMRA. We find that the FPSB outperforms the SMRA across a range of bidding environments: in terms of efficiency, revenue, and protecting bidders from losses due to the exposure problem. Moreover, the FPSB exhibits superior price discovery and almost always results in competitive (“core”) prices unlike the SMRA, which frequently produces prices that are too low because of demand-reduction or too high because of the exposure problem. We demonstrate the robustness of our findings by considering two-stage variants of the FPSB and SMRA as well as environments in which bidders know their own values but not the distributions from which values are drawn.

Keywords: Spectrum auctions; Laboratory experiments; Price discovery; Exposure problem; Market design (search for similar items in EconPapers)
JEL-codes: C78 C92 D47 (search for similar items in EconPapers)
Date: 2024
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DOI: 10.1007/s10683-023-09805-x

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