Dr Ronnie Barnes, a principal at Cornerstone Research, has played a key role in establishing and developing the firm’s European international arbitration practice. An expert on accounting, damages and valuation, Dr Barnes specialises in complex valuation methodologies, including the estimation of the cost of capital, the determination of country risk premia, and the valuation of complex financial instruments such as derivatives and structured finance products. He has provided written and/or oral testimony in multiple matters on topics including the tax treatment of hire purchase contracts; the assessment of damages resulting from the breach of a joint venture agreement; the economic equivalence of various types of financial derivative; and the use of such derivatives in alleged share price manipulation.

In addition to serving as a testifying expert, Dr Barnes also leads teams that support Cornerstone Research’s affiliated experts. In this role, he has consulted on numerous matters requiring sophisticated accounting, financial, and economic analysis. In particular, Dr Barnes has addressed issues related to financial institutions and financial products, as well damages analysis arising from alleged misrepresentations and omissions in corporate disclosures.

Dr Barnes co-authored ‘The Use of Econometric and Statistical Analysis and Tools’, a chapter in The Guide to Damages in International Arbitration, and The Role of Economic Analysis in U.K. Shareholder Actions, a Cornerstone Research report. He has also published articles on valuation methods and damages analyses. A UK-qualified chartered accountant, Dr Barnes previously held positions in accounting and investment banking firms, as well as a consulting firm and in academia. Who’s Who Legal has named Dr Barnes as a leading international arbitration economist. London Business School, PhD; London Business School, MSc; University of Cambridge, Master of Advanced Study in Mathematics; University of Oxford, BA (with honours).