The Journal of Finance publishes leading research across all the major fields of finance. It is one of the most widely cited journals in academic finance, and in all of economics. Each of the six issues per year reaches over 8,000 academics, finance professionals, libraries, and government and financial institutions around the world. The journal is the official publication of The American Finance Association, the premier academic organization devoted to the study and promotion of knowledge about financial economics.
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Pockets of Predictability: A Replication
Published: 08/25/2025 | DOI: 10.1111/jofi.13484
NUSRET CAKICI, CHRISTIAN FIEBERG, TOBIAS NEUMAIER, THORSTEN PODDIG, ADAM ZAREMBA
Farmer, Schmidt, and Timmermann (FST) document time‐variation in market return predictability, identifying “pockets” of significant predictability through kernel regressions. However, our analysis reveals a critical discrepancy between the method outlined by FST and the code actually implemented. Instead of using a one‐sided kernel, which guarantees out‐of‐sample forecasts, they perform in‐sample estimation with a two‐sided kernel. As a result, future information leaks into the forecasting model, undermining its reliability. Rectifying this error qualitatively alters the findings, invalidating most conclusions of the FST study. Thus, attempts to exploit such “pockets”—should they exist—offer little help in forecasting market returns.