Paul Milgrom and Robert Wilson
Citation: For improvements to auction theory and inventions of new auction formats.
The key idea
Auction design depends on what bidders know. Common-value auctions (the value is the same for all, but estimated differently) require different formats than private-value auctions. The FCC spectrum auctions are the canonical real-world success.
The explanation
Wilson's common-value auction theory (1960s-70s) formalised the winner's curse. Milgrom's revenue-equivalence and extensions characterised optimal formats. Together they designed the FCC's simultaneous multiple-round auction for radio spectrum, first used in 1994. The FCC has since conducted over 100 spectrum auctions raising more than $250 billion for the US Treasury, by far the largest market-design success story in policy economics.
Why Africa should care
African spectrum auctions are increasingly designed in the Milgrom-Wilson tradition: South Africa's ICASA 2022 auction raised R14.4 billion (~$960m) for the fiscus through a multi-round bidding process with six qualified bidders. Nigeria's 2022 5G auction awarded two licences for $273.6m each to MTN and Mafab Communications. Kenya, by contrast, has historically used administrative spectrum assignment rather than competitive auction — a policy choice that economists in the Milgrom-Wilson tradition have argued leaves significant revenue and efficiency gains on the table. Mineral-rights and oil-block licensing rounds (Ethiopia, Mozambique, Senegal) increasingly use auction-theory principles.
How to use it
When designing any auction (procurement, asset sale, licensing), match the format to the information structure. If values are largely private, English ascending; if common-value, sealed-bid second-price reduces winner's curse.
Canonical works
- Paul Klemperer (1999) "Auction Theory: A Guide to the Literature" Journal of Economic Surveys
- Paul R. Milgrom (2004) "Putting Auction Theory to Work" Cambridge University Press
- Independent Communications Authority of South Africa (2022) "ICASA concludes successful spectrum auction (R14.4 billion)"
Abhijit Banerjee, Esther Duflo, and Michael Kremer
2021 →David Card, Joshua Angrist, and Guido Imbens
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