Key Highlights

  • Micron Technology (NASDAQ:MU) fell between 3.6% and 5.2% on October 13, 2026 as memory stocks slid for a sixth straight session, after Korea's KOSPI fell about 5.5% on a reported China memory-cell announcement.
  • Applied Materials (NASDAQ:AMAT) fell about 6.7% after its Analyst Day, the biggest loser among chip-equipment makers on the day, though no filing or note confirms what in the presentation drove the sale.
  • ASML Holding (NASDAQ:ASML) reported record third-quarter sales of 11.7 billion euros on October 14, 2026, raised 2026 guidance to 44 billion to 45 billion euros and said capacity growth would not meet demand.
  • Broadcom (NASDAQ:AVGO) Chief Executive Hock Tan reportedly compared AI investing to a casino around October 12 to 13, a remark the market tied to the slide, though the link is inferred.

Micron Technology (NASDAQ:MU): Memory pricing fears

Memory stocks fell again on October 13, 2026, the sixth straight down session for chipmakers. Micron Technology (NASDAQ:MU) dropped between 3.6% and 5.2%, Western Digital between 3.7% and 7.7%, and Seagate between 3.6% and 7.3%, with the sizes depending on the provider and time stamp. UBS cut its target for Western Digital to USD 470 from USD 525. The weakness followed a plunge in Korea's KOSPI, where Samsung and SK Hynix fell sharply on reports that China's CXMT announced a denser memory-cell design. The direction is verified, but the exact figures should be taken as ranges. The pattern points to a sector-wide reaction, with investors selling the group rather than a single name. Memory chips and storage drives sit at the heart of AI servers, where large models need fast memory for training and inference. The fear now is that a new Chinese entrant could add supply or a denser design could lower costs, which would erode pricing power. Higher pricing power lifts margins for Micron Technology (NASDAQ:MU), Western Digital and Seagate, so any hint of its end hits valuations hard. The CXMT link is as reported and has not been confirmed by the company.

Applied Materials (NASDAQ:AMAT): Analyst Day sell-off

Applied Materials fell about 6.7% on October 13, 2026, after holding its Analyst Day, according to published market data. It was the biggest decline among chip-equipment makers on a day when memory stocks and the KOSPI also fell sharply. The company holds such events to present its long-term targets, technology roadmap and financial framework to investors. No filing or note that was found confirms what drove the sale, so linking it to the presentation is an inference. Possible readings include cautious targets, concerns over customer capital spending or simply a sector-wide slide. Analyst Days usually include multi-year targets for revenue growth, margins and returns, so even a modest gap between investor hopes and the new framework can trigger a fall of this size for Applied Materials (NASDAQ:AMAT) in a single session. Equipment makers sell the tools used to build chips, including deposition and etch machines, so their revenue follows chipmakers' capital spending. When memory makers face pricing fears, as they did after reports of China's CXMT announcing a denser design, investors worry they may reduce orders. Applied is exposed to those cycles and to export rules affecting China. ASML's report on October 14 pointed the other way, with 2026 sales guidance raised to 44 billion to 45 billion euros.

ASML Holding (NASDAQ:ASML): Record sales, higher guidance

ASML Holding (NASDAQ:ASML) released third-quarter results at 1:00 a.m. ET on October 14, 2026, with net sales of 11.7 billion euros and net income of 5.0 billion euros, both records according to the company release. Gross margin reached 57.5%. Guidance points higher: fourth-quarter sales of 14.2 billion to 15.2 billion euros, a jump of 21% to 30% from the third quarter by simple arithmetic, and 2026 sales of 44 billion to 45 billion euros. An investor call followed at 9:00 a.m. ET. These are the first major chip-equipment results since the memory selloff on October 13. Net income of 5.0 billion euros means roughly 43% of sales reached the bottom line, simple arithmetic on two published numbers. For ASML Holding (NASDAQ:ASML), the guidance raise suggests the order book remains strong. The October 13 drop happened before the report, so it reflects the wider chip slump rather than ASML's numbers. Equipment makers depend on capital spending by chip manufacturers, and fears that memory makers could cut spending after a pricing shock weighed on the group, with Applied Materials falling 6.7% after its Analyst Day. ASML makes extreme ultraviolet lithography machines that print the finest circuit patterns, so demand reflects long-term capacity plans. Fouquet said capacity growth of 30% a year in 2027 and 2028 would not meet demand, a direct answer to the demand doubts.

Broadcom (NASDAQ:AVGO): Casino remark

Broadcom (NASDAQ:AVGO) Chief Executive Hock Tan reportedly compared AI investing to a casino in comments dated October 12 to 13, 2026. The wording and setting come from secondary summaries, not a transcript, so the precise meaning is uncertain. He might have warned of speculative excess, or he might have described the high-stakes capital commitments by cloud customers and chipmakers, where large bets are placed on uncertain demand. Either way, a chief executive who sells custom AI chips and networking gear to hyperscalers is among the best-informed voices, so market reaction was strong even without full detail. Casino comparisons usually imply high risk and uncertain odds, so the phrase can read as caution about returns on the very large sums being spent on data centres, chips and power. Markets linked the comment to the chip slide, but the evidence is circumstantial. The slide had several drivers: a KOSPI plunge of about 5.5%, reports that China's CXMT announced a denser memory-cell design, UBS cutting its Western Digital target to USD 470 from USD 525, and Applied Materials falling 6.7% after its Analyst Day. Chip stocks had already fallen for six sessions, so positioning was fragile.

Where Things Stand

The answer is that several forces hit chips at once and the evidence is mixed. Micron Technology (NASDAQ:MU) fell on fears that Chinese memory rivals could erode pricing power. Applied Materials (NASDAQ:AMAT) fell on a cause that is inferred, not confirmed. ASML Holding (NASDAQ:ASML) then posted record sales and higher guidance, a counterpoint on demand. Broadcom (NASDAQ:AVGO) supplied a cautious remark of uncertain context. Memory pricing, order timing and TSMC's results on October 15 are the next tests. This is not advice.