Memory chip selloff reaches U.S. markets as SanDisk’s volatility draws attention to sector risks

July 7th, 2026 -

About 1 Mins
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A downturn in memory chip stocks that started overseas has now hit U.S. markets. Both Micron Technology (MU) and Western Digital (WDC) dropped about 6% as the selloff widened.

The drop in memory and storage stocks is happening even though the overall outlook for the sector is positive. This shows how high valuations have become across the semiconductor memory industry. The fact that Micron and Western Digital are falling together suggests this is a broad sector adjustment, not just an issue with one company.

SanDisk’s recent losing streak is getting attention because the stock has soared more than 3,750% over the past year. After such a big jump, there is little room for mistakes. The stock has also had short drops before, like a four-day decline in May and a five-day slide in March, both followed by rebounds. This pattern suggests the current drop is part of a normal pause rather than a sign of a bigger downturn, but the sharp rise earlier means any declines now could be steeper than usual.

SK Hynix’s planned U.S. listing this Friday brings a new factor to the sector. As a major memory company joins U.S. trading, it could shift how investors move money within the group and may cause more short-term volatility as people compare the values of Micron, Western Digital, SanDisk, and Hynix.

This content is provided for general information purposes only and is not to be taken as investment advice nor as a recommendation for any security, investment strategy or investment account.
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