Photo of Ai  Deng, PhD

Selected Expertise

  • Cartels
  • Damages estimation
  • Econometrics
  • Energy market analysis
  • Market manipulation
  • Predictive modeling

Selected Industries

  • Chemicals
  • Commodity markets
  • Computer hardware and software
  • Energy
  • Oil and gas
  • Semiconductors
  • Vitamins


Ai Deng, PhD


Ai Deng has extensive experience in applying econometrics in a variety of litigation contexts—in particular, the estimation of damages and the establishment of liability in price-fixing cases. He also has experience in using statistical techniques, including machine learning/pattern recognition, to study alleged manipulation in financial markets.

Dr. Deng has experiences in all aspects of empirical economic analyses, from performing and directing data processing to implementing state-of-the-art econometric techniques. He also assists attorney clients with understanding econometric arguments and issues put forward by both plaintiff and defendant experts, and with developing easy-to-understand documents that explain technical arguments to judges and juries.

Dr. Deng has published in multiple internationally renowned academic journals including Journal of Econometrics, Econometric Theory, Econometrics Journal, and Journal of Financial Econometrics. In addition, he is an active referee for a number of academic journals, including Journal of Econometrics, Journal of Business & Economic Statistics, Journal of Applied Econometrics, Journal of Empirical Finance, Journal of Time Series Econometrics, and Journal of Economic Surveys. Recently, Dr. Deng was invited to be an external expert to evaluate research programs to be funded by the Romanian National Council for Scientific Research. As an adjunct faculty, he also teaches graduate level classes in econometrics at Johns Hopkins University.

Selected Experience

  • Co-led extensive analyses in support of cartel damages estimation for the expert witness in a number of litigations, including Oracle America, Inc. v. Micron Technology, Inc., In re TFT-LCD (Flat Panel) Antitrust Litigation, In re Urethane Antitrust Litigation, and In re Rubber Chemicals Antitrust Litigation
  • Assisted the expert witness and supported both the affirmative and rebuttal econometric analyses to examine NYMEX natural gas futures price behavior in In re Amaranth Advisors LLC.
  • In In re Puerto Rico Jesús Trilla v. Commonwealth of Puerto Rico, a class-action lawsuit brought against fuel wholesalers, retailers, and the Department of Consumer Affairs in Puerto Rico, assisted the expert witness and developed multiple econometric tests to show that temperature adjustments in gasoline were fully passed through to final consumers.
  • Conducted extensive econometric analyses proving defendant liability and calculating cartel damages in In re Dynamic Random Access Memory (DRAM) Antitrust Litigation. Analyses supported expert witnesses in both the affirmative and rebuttal reports.
  • Developed rebuttal and affirmative econometric analyses to support multiple experts to analyze damages issues related to the misreporting of prices to publishers of natural gas price indices in In re Natural Gas Commodity Litigation.


PhD, Economics, Boston University

MA, Political Economy, Boston University

BA, Economics, Chongqing University