--- title: "Storage chip stocks collectively fell, Everspin (MRAM.US) dropped nearly 11%, and Micron (MU.US) surged before retreating" type: "News" locale: "en" url: "https://longbridge.com/en/news/286785312.md" description: "Storage chip stocks rose before the market on Monday due to the AI storage concept but collectively fell after the opening. Everspin (MRAM.US) dropped nearly 11%, SanDisk (SNDK.US) fell nearly 6%, Western Digital and Seagate declined over 5%, and Micron turned negative after a brief rise, with profit-taking concentrated in the sector" datetime: "2026-05-18T14:07:47.000Z" locales: - [zh-CN](https://longbridge.com/zh-CN/news/286785312.md) - [en](https://longbridge.com/en/news/286785312.md) - [zh-HK](https://longbridge.com/zh-HK/news/286785312.md) --- # Storage chip stocks collectively fell, Everspin (MRAM.US) dropped nearly 11%, and Micron (MU.US) surged before retreating On Monday (May 18), during the early trading session of U.S. stocks, the storage chip sector surged and then fell, collectively declining. As of the time of publication: - Everspin Technologies (MRAM.US) fell 10.94%, priced at $33.46 - SanDisk (SNDK.US) fell 5.84%, priced at $1325.38 - Seagate (STX.US) fell 6.01%, priced at $747.63 - Western Digital (WDC.US) fell 5.61%, priced at $455.00 - Micron Technology (MU.US) fell 1.50%, priced at $713.76 - DRAM-related ETF (DRAM.US) fell 0.35%, priced at $50.92 - Sector derivative targets MUU.US fell 3.41%, SNXX.US fell 11.74% It is noteworthy that the sector exhibited a typical "high open, low close" pattern: MU.US initially rose over 4% before the market opened and opened at $749.24, but quickly gave back all gains and turned negative; MUU.US reached a maximum intraday gain of 8.71%, but is currently down 3.41%; SNDK.US briefly peaked at $1440 at the open, but has since fallen over 8% from the opening price. On the news front, storage concept stocks rose over 3% in pre-market trading due to the overall rise in AI storage/optical communication concepts, driven by optimistic expectations for storage demand expansion under the "AI inference supercycle." However, after the market opened, profit-taking concentrated in the sector, with Micron quickly giving up its gains and SanDisk's losses expanding to over 3% and continuing to decline, showing a significant divergence from the Philadelphia Semiconductor Index (which rose 1.7% in the early session). At the individual stock level, Western Digital (WDC.US) today launched the world's first quantum-resistant encrypted hard drive, emphasizing "providing next-generation trusted infrastructure for the AI data era," but this positive news could not withstand the overall selling pressure in the sector. Micron (MU.US) and SanDisk (SNDK.US) are considered the two core beneficiaries of the "AI inference supercycle," but the recent sharp decline reflects a strong willingness among short-term trading funds to take profits ### Related Stocks - [SNDK.US](https://longbridge.com/en/quote/SNDK.US.md) - [MU.US](https://longbridge.com/en/quote/MU.US.md) - [MRAM.US](https://longbridge.com/en/quote/MRAM.US.md) - [SMH.US](https://longbridge.com/en/quote/SMH.US.md) - [SOXX.US](https://longbridge.com/en/quote/SOXX.US.md) - [MULL.US](https://longbridge.com/en/quote/MULL.US.md) - [XSD.US](https://longbridge.com/en/quote/XSD.US.md) - [SOXQ.US](https://longbridge.com/en/quote/SOXQ.US.md) - [FTXL.US](https://longbridge.com/en/quote/FTXL.US.md) - [DRAM.US](https://longbridge.com/en/quote/DRAM.US.md) - [PSI.US](https://longbridge.com/en/quote/PSI.US.md) - [MUU.US](https://longbridge.com/en/quote/MUU.US.md) - [MUD.US](https://longbridge.com/en/quote/MUD.US.md) - [SOXL.US](https://longbridge.com/en/quote/SOXL.US.md) - [STX.US](https://longbridge.com/en/quote/STX.US.md) - [WDC.US](https://longbridge.com/en/quote/WDC.US.md) - [SNXX.US](https://longbridge.com/en/quote/SNXX.US.md) - [SNDKV.US](https://longbridge.com/en/quote/SNDKV.US.md) - [WDCVV.US](https://longbridge.com/en/quote/WDCVV.US.md) ## Related News & Research - [Why Micron (MU) Stock Is Up Today and Why BofA Thinks It Can Still Go Higher](https://longbridge.com/en/news/286280489.md) - [Where Will Sandisk Stock Be in 5 Years?](https://longbridge.com/en/news/286990821.md) - [Micron or SanDisk: Billionaire Israel Englander Picks One AI Memory Stock Over the Other](https://longbridge.com/en/news/286826007.md) - [GraniteShares Goes Down The AI Memory Lane, Eyes An Autocallable DRAM ETF](https://longbridge.com/en/news/286936026.md) - [Is Micron Stock Expensive at $725? Here's the Math on Why Shares Are Still Dirt Cheap.](https://longbridge.com/en/news/286878649.md)