Why is Micron Technology stock sliding today?

Micron Technology's stock experienced a 1.9% decline in after-hours trading on Monday, as losses from the main session of 3.9% extended to a price of $970.54. This downturn is attributed to growing concerns over competition from Chinese memory chipmaker ChangXin Memory Technologies (CXMT), which recently announced advancements in a next-generation 4F² DRAM architecture and intends to launch DDR5 server-memory products before the year's end.

The Chinese rival's fifth-generation DRAM manufacturing platform is already in mass production, reducing the technological gap between Micron and established players, thereby raising apprehensions about future pricing power in the high-margin server memory market.

Compounding the pressure, workers at Micron's Taiwan facilities, which contribute significantly to the company's DRAM and high-bandwidth memory output, have authorized a strike due to a profit-sharing dispute. A union rally is scheduled for October 19, and a further mediation session is set for October 22, causing operational uncertainties to escalate.

Additionally, bearish options positioning in semiconductor-focused ETFs has risen, with put volume substantially surpassing call volume, indicating that institutional traders are actively hedging against further sector weakness.

Insider Form 4 filings were also noted by market observers, submitted on October 11 and 12. On the wider market front, the NASDAQ fell 0.44% on Monday, weighed down by losses in tech shares. Similarly, Micron's competitors, Samsung Electronics and SK Hynix, reported significant losses in South Korean trade.