In Copper Mesa Mining Corporation v. Republic of Ecuador, an investment arbitration under UNCITRAL rules, we provided expert testimony on the quantum of damages arising from the alleged expropriation of a copper mining project in Ecuador. On behalf of Respondent, we explained why the claimed value of the assets was not consistent with market value. We conducted an event study analysis based on the market value of Claimant’s publicly traded stock price, evaluated the applicability of control premiums and liquidity discounts and analyzed the comparability of a group of precedent transactions used as valuation benchmarks by Claimant’s experts. A PCA tribunal denied the Claimant’s market value claim and issued an award based on investment cost.