Shares in Intel and Micron led market cap movements among chip stocks on Thursday, as investors weighed diverging signals from the semiconductor sector. Intel dropped around 3% in early US trading after a major investment bank downgraded the stock, citing a slower-than-expected recovery in personal computer demand and ongoing inventory gluts. The move erased roughly $4bn from Intel's market capitalisation.
By contrast, Micron Technology rose nearly 2%, adding approximately $2.5bn in value, following upbeat commentary from analysts about its high-bandwidth memory chips used in artificial intelligence data centres. The divergence highlights a growing split between traditional chipmakers reliant on consumer electronics and those benefiting from the AI infrastructure buildout.
For UK investors, the moves have direct implications. London-listed semiconductor firms such as IQE, the Welsh wafer maker, and Arm Holdings, which trades in New York but has significant UK institutional ownership, saw their shares move in sympathy. IQE fell 1.8% on concerns about broader chip demand, while Arm edged 0.7% higher on the Micron-led AI optimism.
The FTSE 100 was broadly flat on the day, but the technology-heavy FTSE 250 slipped 0.3% as sentiment in the sector weighed on growth stocks. Analysts at Peel Hunt noted that UK pension funds with exposure to global technology equities through passive tracker funds would feel the pinch from Intel's decline, but could benefit from Micron's gains if the AI-driven cycle continues.
“The chip sector is at a crossroads,” said a technology analyst at Numis, speaking on condition of anonymity. “We are seeing a clear bifurcation between legacy end markets and the AI boom. For UK portfolios, it means volatility is likely to persist, and diversification across chip subsectors is more important than ever.”
No investment advice is implied. The moves come ahead of Intel's quarterly earnings next week, which will be closely watched by UK fund managers for further signs of demand trends.