Lexology Index: Arbitration – Expert Witnesses 2026

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René Stulz of The Ohio State University and Ronnie Barnes of Cornerstone Research are named to list of leading expert witnesses.

Lexology Index and Global Arbitration Review (GAR) have recognised Ronnie Barnes and René Stulz as top expert witnesses in the arbitration field. Dr. Barnes is the head of Cornerstone Research’s international arbitration and litigation practice.

Lexology and GAR draw on recommendations from peers, clients, arbitrators, tribunal members, chairs and counsel to develop this prestigious annual list. Recommendations are reserved for individuals who receive strong, consistent endorsements during the research process.

Ronnie Barnes
  • Location icon London
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Ronnie Barnes

Vice President

René M. Stulz

René M. Stulz

Everett D. Reese Chair of Banking and Monetary Economics,
Director, Dice Center for Research in Financial Economics,
Fisher College of Business,
The Ohio State University