As we enter 2026, Econometric Theory embarks on a new chapter in its distinguished history. Founded in 1985 by Peter C. B. Phillips to advance theoretical contributions across all major areas of econometrics, the journal has become a leading platform for rigorous econometric research worldwide.

After more than four decades of visionary leadership, Professor Peter C. B. Phillips will step down as Editor-in-Chief. A pioneering scholar and one of the most influential figures in modern econometrics, Professor Phillips has profoundly shaped the field and guided Econometric Theory to international prominence. We also extend our heartfelt thanks to Dr Deborah Blood, who has served the journal with exceptional dedication as Managing Editor for many years. Their combined commitment, insight, and leadership have been instrumental in shaping the journal’s enduring excellence.

Beginning in 2026, Econometric Theory will be led by three Editors-in-Chief:

• Patrik Guggenberger, Liberal Arts Research Professor of Economics, Pennsylvania State University
• Liangjun Su, C. V. Starr Chair Professor of Economics, Tsinghua University
• Yixiao Sun, Professor of Economics, University of California, San Diego

All three have made substantial contributions to Econometric Theory through their long-standing service as Co-Editors and their deep engagement with the econometrics community. Their collective research expertise covers all major theaters of econometric research and encompasses growth frontiers of the discipline such as those involving big data and machine learning methods. With a global axis of influence they are ideally positioned to guide the journal into its next era of innovation and scholarly impact.

We warmly welcome Professors Guggenberger, Su, and Sun as Editors-in-Chief and look forward to the continued growth and success of Econometric Theory under their leadership.