Large-cap stocks show historical advantage in fourth quarter

A historical market pattern spanning over a century suggests that large-cap stocks tend to outperform small-cap stocks during the fourth quarter. Data indicates that while small caps often see their best relative performance in January, their advantage diminishes throughout the year, typically turning negative by the end of the fourth quarter.

Experts attribute this seasonal trend to several factors. Beyond fundamental drivers such as rising bond yields and economic policy uncertainty—which historically correlate with weaker small-cap performance—there is a distinct seasonal tendency driven by fund manager behavior. This is often linked to ‘window dressing,’ where managers adjust portfolios to highlight large-cap holdings to secure year-end bonuses.

Research, including studies by finance professor Lucy Ackert of Kennesaw State University, highlights the consistency of this pattern across different market phases, suggesting the trend is statistically robust rather than coincidental.