Key Highlights

  • The Philadelphia Semiconductor Index rose 2.82 percent, its best day since September 21.
  • The sector remains down 12.2 percent for October, about 25 percent below its high.
  • Micron's own price move on the day was not available in the data reviewed.
  • Bank of America held a USD 1,550 target on Micron Technology.

The Philadelphia Semiconductor Index rose 2.82 percent to 11,083.47 on October 26, 2026, its strongest session since September 21, even as the sector remains down 12.2 percent for the month and roughly 25 percent below its high. Nvidia added 2.39 percent to close at USD 216.00 as the rally followed Anthropic's public Nasdaq listing filing. Micron Technology's (NASDAQ:MU) own price move on the day was not available in the information reviewed, though the company remains a natural focus given high-bandwidth memory's central role in AI accelerators.

Why Memory Earnings Swing So Widely

Memory chips are inherently cyclical: prices and profits climb when supply runs tight and fall when manufacturers add capacity or customers pull back orders, meaning memory earnings can swing from strong profits to losses across just a few quarters. Bank of America's decision to hold a USD 1,550 target on Micron signals confidence in the AI-driven demand story, though a target remains one firm's view rather than a guaranteed outcome. Separately, one report describes the SOXX ETF drawing a record-scale USD 5.4 billion weekly inflow, a figure worth treating cautiously since it rests on a single source.

What Would Confirm the Rally Has Legs

A single strong session inside a 12.2 percent monthly decline does not amount to a trend on its own. Microsoft and Alphabet's October 28 results, along with Amazon and Intel on October 29, will offer the clearest read on whether AI spending plans support continued demand for memory, while Meta's own plan to raise up to USD 95 billion for AI infrastructure underscores how large the underlying spending pool remains across the sector.