Micron Technology Stock Rebounds as Chip Rout Eases

Micron Technology stock rose about 3% premarket Friday as SanDisk gained 4% and SK Hynix 6%, bouncing back from Thursday's steep semiconductor selloff.

Lead

Memory-chip stocks rebounded in premarket trading on Friday, October 23, after a sharp selloff in semiconductors the previous session. Micron Technology (MU) rose about 3%, SanDisk (SNDK) about 4% and SK Hynix (SKHY) about 6%. The moves recovered part of Thursday's losses, when the Philadelphia Semiconductor Index fell 6.72% to 10,731.98, its lowest close since July 29.

What Happened to Chip Stocks on Thursday?

Chip stocks fell on Thursday, October 22, after a supply warning from a chip-equipment maker and fresh doubts about AI spending. The Nasdaq Composite lost 2.60% to 26,008.86, its steepest one-day decline since June.

Memory makers were among the hardest hit. Six of the largest memory and storage producers have shed roughly $1 trillion in combined market value since October 2. Investors rotated into defensive sectors, including consumer staples, utilities and health care.

Why Did Memory Stocks Bounce on Friday?

Memory stocks bounced on Friday because of a broad rebound in semiconductors and a company-specific catalyst at SK Hynix. In a regulatory filing before the market opened, the South Korean group said it was halting its review of a pre-IPO funding round and an initial public offering for Solidigm, its overseas flash-memory subsidiary.

Solidigm had explored funding options, including a U.S. listing, to help pay for a new American fab aimed at AI memory demand. South Korean authorities had indicated that a U.S. listing would collide with the country's dual-listing rules. SK Hynix cited market turbulence in its decision. Removing the overhang helped lift the shares, which traded around the mid-$130s in the session.

Why Does Micron Technology Stock Matter for AI Stocks?

Micron Technology stock matters for AI stocks because high-bandwidth memory is a core component of the accelerators used in data centers. Micron, SK Hynix and SanDisk have benefited from demand for AI-related memory and storage, which pushed their valuations sharply higher this year. That also left them exposed when sentiment on AI spending turned.

The Thursday rout showed how quickly capital can leave the group. Micron traded near $874 at Thursday's open, down about 4.4%, heading for a sixth straight decline. SanDisk fell about 6.6% to roughly $1,311 early in the session, and SK Hynix's slide extended to a seventh consecutive loss.

Market Context

The premarket gains are modest against the scale of the prior decline. A 3% to 6% bounce recovers only a fraction of the losses recorded since early October. The semiconductor index remains well below its recent highs, and the equipment sector's guidance has put supply constraints back into the debate over how fast AI capacity can be built.

Consensus views on the sector remain split. Some strategists point to durable demand for high-bandwidth and low-power memory, while others note that rate concerns, labor-market risk and Chinese competition have weighed on valuations.

Outlook

Friday's rebound in Micron, SanDisk and SK Hynix follows a session in which the semiconductor index lost 6.72% and the Nasdaq its worst day since June. Direction in the near term depends on whether the premarket gains hold through the regular session and on further capital-spending signals from large technology companies. The end of the Solidigm IPO review removes one source of uncertainty for SK Hynix, while the supply constraints flagged by Lam Research remain a central issue for the sector into 2027.