Samsung and SK Hynix Shares Slide as CXMT Advances Memory Tech
Shares of Samsung and SK Hynix declined after reports indicated that Chinese chipmaker ChangXin Memory Technologies (CXMT) is making progress in developing next-generation memory technology. This development has raised concerns among investors about increased competition in the global memory chip market, particularly as Korean semiconductor stocks have faced significant foreign capital outflows this year.
Key points
- Samsung and SK Hynix shares dropped following news of CXMT's advancements in memory development.
- The decline reflects market concerns about growing competition from Chinese memory producers.
- Foreign investors have withdrawn $131 billion from South Korean equities in 2026, the largest outflow among major Asian markets.
- The Kospi index has fallen 22% in the second half of the year, reversing its earlier status as the world's top-performing market.
- Samsung reported a record third-quarter operating profit of $80.1 billion, but shares still declined due to missed analyst forecasts.
Background
In August 2026, CXMT posted its first earnings as a public company, reporting a 77.6 billion yuan profit driven by AI demand and DRAM shortages. It remains the fourth-largest memory supplier globally. In October 2026, Samsung reported a record third-quarter operating profit of 107.4 trillion won, up 782% year-over-year, but shares fell as results missed the top end of analyst forecasts. The broader Korean market has seen significant volatility, with foreign investors withdrawing $131 billion from South Korean equities in 2026, the largest outflow among major Asian markets.
Why it matters
The decline in Samsung and SK Hynix shares highlights the intensifying competition in the memory chip market, particularly from Chinese producers like CXMT. This competition could impact the profitability and market share of established Korean semiconductor companies, which are central to the Kospi index. The significant foreign capital outflows from South Korean equities in 2026 suggest deepening investor concerns about the sustainability of the semiconductor boom, especially as AI-related investment enthusiasm cools.
What to watch
Investors will likely monitor further developments in CXMT's memory technology and its potential impact on the global memory chip market. Samsung's detailed third-quarter results, due on October 29, will also be closely watched for insights into the company's performance amid increasing competition. The broader trend of foreign capital outflows from South Korean equities may continue if investor confidence in the semiconductor sector remains weak.
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