MarketWatch columnist Mark Hulbert is pushing back hard against one of Wall Street’s most persistent seasonal narratives about August stock market performance.
Hulbert argues that the so-called “August stock market slump” is a myth, and that equities actually tend to perform well during the month, contrary to widespread belief.
The piece takes direct aim at the “dog days of summer” storyline that analysts and financial media outlets repeat each year as August approaches.
Hulbert specifically calls out Barron’s for quoting an analyst who claimed the stock market on average declines during August, which he argues is factually incorrect.
The persistence of this narrative is notable given how frequently it surfaces in financial commentary, despite what Hulbert contends the data actually shows.
Seasonal investing myths are not new to Wall Street, where patterns like “Sell in May and go away” have long been repeated despite mixed supporting evidence over time.
The danger of such narratives is that retail investors may make portfolio decisions based on conventional wisdom that does not hold up under rigorous statistical scrutiny.
Hulbert has built his career at MarketWatch on debunking investment myths and holding market commentary accountable to historical data and evidence-based analysis.
His argument suggests that financial media and analyst communities bear some responsibility for perpetuating seasonal stories that can mislead everyday investors about market behavior.
The broader implication of Hulbert’s reporting is that investors should approach recurring Wall Street seasonal narratives with skepticism and consult actual long-term market return data before acting.
With markets navigating a complex macroeconomic environment in 2026, the stakes for accurate seasonal analysis are higher than ever for both institutional and individual investors.
