Semiconductor Rally Offsets Mega-Cap Weakness as Market Rotation Broadens

The stock market delivered a mixed performance on Thursday as a powerful rally in semiconductor and memory stocks was largely offset by continued weakness among several mega-cap technology names. While the S&P 500 finished little changed and the Nasdaq Composite slipped 0.5%, the Dow Jones Industrial Average managed to edge 0.1% higher after reaching another record intraday high. Beneath the surface, however, market participation remained encouraging, with strength extending across both cyclical and defensive sectors.

Semiconductor stocks led the day’s advance following an exceptional earnings report from Micron. The company surged 15.7% after delivering another impressive beat-and-raise quarter, reinforcing expectations for robust demand driven by AI infrastructure and high-bandwidth memory. The upbeat results fueled broad gains throughout the memory space and helped the Philadelphia Semiconductor Index climb 3.6%.

The path higher was far from smooth. After opening with gains exceeding 5%, semiconductor stocks experienced another bout of intraday volatility before buyers returned late in the session to push the group firmly into positive territory.

Ironically, the same memory pricing environment that boosted Micron weighed on several of the market’s largest technology companies. Apple fell 6.1% and Microsoft declined 3.5% after both companies announced product price increases tied to rising memory costs. Amazon lost 3.1%, while Alphabet slipped 0.8%, extending recent weakness across several mega-cap growth names.

As a result, the information technology sector finished marginally lower despite the strength in chipmakers, while the consumer discretionary and communication services sectors also underperformed. The Vanguard Mega Cap Growth ETF declined 1.0%, reflecting continued selling pressure across the largest growth-oriented companies.

Away from mega-cap technology, market leadership continued to broaden. Six of the eleven S&P 500 sectors finished higher, reinforcing the ongoing rotation into other areas of the market rather than signaling a broader move away from equities.

Industrials led the advance with a 2.2% gain. Caterpillar climbed more than 6% to another record high, finishing as the Dow’s best-performing component amid continued strength across machinery and capital equipment manufacturers.

Health care was another standout, rising 1.5%. Bio-Techne soared 20% after agreeing to be acquired by Merck KGaA for $73 per share in cash, providing a significant boost to the sector.

The materials sector advanced 1.4% as fertilizer producers and metals companies participated in the rally, while the energy sector gained 1.0% alongside a rebound in crude oil prices following Wednesday’s decline.

The market’s underlying strength was also reflected in the S&P 500 Equal Weight Index, which gained 0.6% and once again outperformed the capitalization-weighted S&P 500. Smaller companies also participated in the advance, with the Russell 2000 rising 0.5% and the S&P MidCap 400 adding 0.7%.

Thursday’s trading continued to highlight the market’s evolving leadership profile. While volatility remains elevated across the largest technology companies, participation beneath the surface continues to improve as investors rotate into industrials, health care, materials, and other sectors. The Dow Jones Industrial Average now boasts an 8.0% year-to-date gain, surpassing the S&P 500’s 7.5% advance and underscoring the ongoing broadening of market leadership.

The session also demonstrated that the AI investment theme is becoming increasingly nuanced. Micron’s results confirmed exceptionally strong demand for memory suppliers, but they also highlighted rising input costs that are beginning to pressure some of the technology industry’s largest customers. As the AI ecosystem continues to mature, investors appear increasingly focused on distinguishing between its primary beneficiaries and those facing higher costs as adoption accelerates.

Our FTinvest 11 model portfolio advanced 1.59% to close at 1,030.96, recovering from the previous session’s pullback and moving further away from the recent correction lows. The portfolio remains firmly above the 1,000 level and has now recovered most of the decline experienced earlier this month, trading approximately 4.4% below its all-time high of 1,078.93.

FTinvest 11 is now up approximately +11.07% year-to-date, returning to solid double-digit gains for 2026. The recovery over the past week has been supported by the normalization of the portfolio component that had previously faced liquidity-related challenges, allowing the portfolio to regain much of the lost ground. With that company-specific uncertainty largely behind it, FTInvest 11 has resumed its broader upward trajectory while remaining committed to its disciplined, value-driven investment philosophy.