Dr. Soren Tang Sorensen

Managing Director


Tel: +44 7775 018622
Fax: +44 20 7659 8501

Email: soren.sorensen@nera.com
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PhD in economics, University of Aarhus, Denmark
Cand.Oecon, University of Aarhus, Denmark
MSc in economics, University of Southampton, England
BA in economics, University of Aarhus, Denmark


Soren Tang Sorensen is a London-based economist with more than 15 years of experience advising clients on auction design and bidding strategy in auctions. He has extensive experience with spectrum auctions, having advised clients on spectrum auctions in more than 40 countries in Europe, Asia, the Middle East, and North America. Dr. Sorensen helps his clients with auction design and implementation and provides advice on bidding strategies for mobile network operators. He frequently provides on-site strategy support during live auctions, and he has experience with all common auction formats for spectrum auctions, including Combinatorial Clock Auction (CCA), Combinatorial Multiple Round Auction (CMRA), Simultaneous Multiple Round Auction (SMRA), Clock Auction (CA), First/Second Price Sealed Bid Auction (FPSB/SPSB), and various hybrid auction formats.                                                  

Dr. Sorensen has developed software for complex optimisation problems. He has developed integer programming algorithms that have been adapted to winner and price determination problems for more than 20 combinatorial auctions; he has implemented satisfiability algorithms to analyse the spectrum re-packaging problem in the Federal Communication Commission’s (FCC) Incentive Auction; and he has implemented graph and network algorithms for optimising fixed line telecommunications networks using GIS data.

In addition to his work on spectrum auctions, Dr. Sorensen has advised clients on auction design and bidding strategies in diverse markets including natural gas (gas and gas storage capacity); electricity (capacity markets, procurement, and interconnector capacity); renewable energy (offshore wind sites and contract for difference contracts); water abstraction rights; airport slots; TV broadcasting licences; rough diamonds; industrial procurement; and horse racing courses.

Dr. Sorensen specialised in microeconomics, game theory, and auction design during his PhD. He published part of his PhD thesis in Economics Letters and has co-authored a chapter on CCA for the Handbook of Spectrum Auctions, published by Cambridge University Press. He is also a frequent speaker at industry conferences on spectrum policy.



Title Type Author
Strategic Bidding in Combinatorial Clock Auctions – A Bidder Perspective Book Richard Marsden and Dr. Soren Tang Sorensen
NERA Report on Strategic Bidding in Combinatorial Clock Auctions Regulatory Filing Richard Marsden and Soren Tang Sorensen
Sequential Auctions for Stochastically Equivalent Complementary Objects Published Article By Dr. Soren Tang Sorensen
The Google IPO Auction: Bidding Strategies for Institutional Investors Brief By Dr. Soren Tang Sorensen with former NERA Associate Director Dr. Philip Kalmus
Study to Assess the Effects of Different Slot Allocation Schemes Study Dr. Soren Sorensen, et al.
Comments on the Presentation of Mason Communications to the BFWA Consultative Group o... Report Dr. Soren Tang Sorensen, et al.
Optimal Sequential Auctions for Complements Working Paper Dr. Soren Tang Sorensen