Micron Technology Inc. (NASDAQ:MU) just posted its strongest month in four decades, and history suggests the next one rarely goes as well.

The company’s stock price jumped 87.76% in May, its best monthly gain since November 1985, as an artificial-intelligence infrastructure buildout sent memory pricing and demand vertical. Shares closed the month near $971, up from roughly $512.

Only one month in Micron’s public-market history was better: November 1985, when the stock soared 97%.

Yet investors celebrating Micron’s historic run may soon face a less friendly seasonal backdrop.

Chart: Micron Just Posted Its Best-Performing Month In Over 40 Years

Why Does June Worry Micron Bulls?

Over the past 41 years, June has been Micron’s poorest-performing month.

TradingView data shows that the stock has generated an average June return of -1.35%, the weakest seasonal reading of any month.

Micron has finished June higher in just 54% of years, meaning gains ...