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MARKET BRIEFING · US

The same China memory headline knocked Seoul down more than 5%, while U.S. chip stocks slipped only slightly.

October 13, 2026 · Read the Korean original

Major indices

  • Dow 51,670.10 -0.35%
  • S&P 500 7,805.45 -0.02%
  • Nasdaq 27,204.38 -0.15%

What moved U.S. markets overnight was not earnings but the wait for data. Ahead of the September consumer price report due Wednesday, investors held back, and Fed officials' remarks did the rest of the work on rates. After New York Fed President John Williams said one more hike this year may be appropriate but none looks necessary next year, the 10-year Treasury yield eased into the 5.2% area and the dollar, which had hit a 17-month high the day before, pulled back, according to investingLive. Oil went the other way, with West Texas Intermediate settling in the $94 range as Middle East supply risk resurfaced.

At the index level it looked like a quiet day, but underneath it was split. The Dow fell 0.35%, the S&P 500 was close to flat at -0.02% and the Nasdaq lost 0.15%, with banks and energy holding up as much as semiconductors dragged down. Reuters put the Philadelphia Semiconductor Index 0.23% lower, a fifth straight losing session.

Two stories drove that. One was China's CXMT laying out plans for denser server memory, which pressed Micron and the NAND and hard-drive names for a second day. The other was the start of third-quarter bank earnings, where beats and misses were mixed and the market took the batch coolly. Apple, meanwhile, set an intraday record high and finished slightly higher.

For today's Korean session, the gap between the two markets is the thing to watch. The same CXMT headline knocked the Kospi down more than 5% the previous day, while the decline in U.S. memory and chip names was far smaller. The two markets priced the same fear very differently, so it is safer to treat semiconductors as open to both a bounce and more volatility. The rise in oil may come back as a cost burden for refiners and chemicals.

That is what the reporting confirms; the rest is interpretation. Index moves, individual stock moves and the Fed remarks were verified across several outlets, but whether Seoul overreacted remains a hypothesis rather than a judgment. Wednesday's September CPI is the variable that will reset the direction of rates and the dollar.

Korean industries to watch today

  • Semiconductors · U.S. memory names fell far less than Seoul, leaving room for both a bounce and more volatility.
  • Chemicals & refining · Higher oil on Middle East supply worries may add cost pressure for refiners and chemicals.

Watchlist stocks in the news

  • Micron (MU) Close -3.62% · Fell for a second day on China's CXMT pushing into server memory, leading the memory selloff. (CNBC)
  • Sandisk (SNDK) · Slid during the session as server-memory competition fears spilled into NAND. (24/7 Wall St.)
  • Western Digital (WDC) · Followed a second day of weakness across memory and storage, with no company-specific news. (CNBC)
  • Seagate (STX) · Dropped alongside the rest of the storage group. (CNBC)
  • NVIDIA (NVDA) · Opened softer as the AI chip selloff that began in Asia carried over to New York. (Forbes)
  • TSMC (TSM) · Extended the decline that started in Taipei trading. (Forbes)
  • Intel (INTC) · Was dragged down with the broader chip selloff. (Forbes)
  • Broadcom (AVGO) Close +0.70% · Rose even as memory names fell, with demand hopes for custom AI chips intact. (Reuters)
  • Apple (AAPL) Close +0.10% · Set an intraday record high, then gave back most of the gain to close marginally higher. (Reuters)
  • Tesla (TSLA) · Traded lower as investors held back ahead of third-quarter results later this month. (Forbes)
  • SpaceX (SPCX) · Slid, cutting the value of Musk's holdings sharply in a single day, according to reports. (Forbes)
  • Netflix (NFLX) · Firmed after securing exclusive 2030 World Cup rights for Spain and Andorra. (Benzinga)

Sources (Korean-language)

This market briefing was compiled by AI from this site's own price and filing data together with public news reports, and translated from the Korean original. Please check the sources below before relying on it.

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