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:
<ul>
<li>Everspin Technologies (MRAM.US) fell 10.94%, priced at $33.46</li>
<li>SanDisk (SNDK.US) fell 5.84%, priced at $1325.38</li>
<li>Seagate (STX.US) fell 6.01%, priced at $747.63</li>
<li>Western Digital (WDC.US) fell 5.61%, priced at $455.00</li>
<li>Micron Technology (MU.US) fell 1.50%, priced at $713.76</li>
<li>DRAM-related ETF (DRAM.US) fell 0.35%, priced at $50.92</li>
<li>Sector derivative targets MUU.US fell 3.41%, SNXX.US fell 11.74%</li>
</ul>
It is noteworthy that the sector exhibited a typical &#34;high open, low close&#34; 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 &#34;AI inference supercycle.&#34; 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 &#34;providing next-generation trusted infrastructure for the AI data era,&#34; 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 &#34;AI inference supercycle,&#34; but the recent sharp decline reflects a strong willingness among short-term trading funds to take profits

SNDK

MRAM

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

- On May 18, U.S. stocks in the storage chip sector experienced a significant decline after an early surge.  
- Everspin Technologies dropped 10.94%, and Micron Technology fell 1.50%, while the overall sector reversed its gains despite initial optimism driven by AI storage demand.  
- Notably, individual stocks like Western Digital launched a new quantum-resistant hard drive, but this positive news could not counterbalance the selling pressure in the market.

Movers Alert

Sandisk

Micron Tech

Everspin Tech

VanEck Semiconductor ETF

iShares Semiconductor ETF

GraniteShares 2x Long MU Daily ETF

SPDR S&P Semicon

Invesco PHLX Semiconductor ETF

First Trust Nasdaq Food & Semicon

Roundhill Memory ETF

Invesco Semiconductors ETF

Direxion Daily MU Bull 2X Shares

Direxion Daily MU Bear 1X Shares

Direxion Semicon Bull 3X

Seagate Tech

Western Digital

Tradr 2X Long Sndk Daily ETF

Sandisk - WI

Western Digital - WI

Storage chip stocks collectively fell, Everspin (MRAM.US) dropped nearly 11%, and Micron (MU.US) surged before retreating