Tech Rally Fuels Market Bounce: Why Chip Stocks and Inflation Data Are Telling Different Stories

The stock market delivered an upbeat performance Thursday, with the S&P 500 climbing +0.79%, while the tech-heavy Nasdaq 100 led the charge with a +1.51% surge. The Dow Jones lagged comparatively, gaining just +0.14%. December futures followed suit, with E-mini S&P 500 futures rising +0.74% and E-mini Nasdaq futures climbing +1.41%.

The standout story? A dramatic comeback in semiconductor stocks. Micron Technology stole the spotlight, rallying more than +10% after delivering an upbeat quarterly forecast that caught investors off guard. The memory-chip giant cited robust demand paired with persistent supply constraints, a combination allowing the company to command premium pricing. Micron’s Q1 revenue came in at $13.64 billion, handily beating the consensus estimate of $12.95 billion, while its Q2 guidance of $18.3-$19.1 billion far exceeded expectations of $14.38 billion.

This semiconductor surge rippled across the entire chip sector. Sandisk, Western Digital, and Lam Research all climbed more than +6%, while Seagate Technology gained over +5%. Applied Materials, Marvell Technology, and Advanced Micro Devices also participated in the rally, each posting gains exceeding +2%.

Economic Tailwinds: Inflation Cools, Jobless Claims Steady

The market’s upbeat mood intensified following fresh economic data that suggested the inflation battle may finally be cooling. US consumer prices rose just +2.7% year-over-year in November, well below the expected +3.1% increase. Core inflation—stripping out volatile food and energy prices—climbed +2.6% y/y, marking the slowest pace in 4.5 years and undershooting the +3.0% forecast.

Weekly jobless claims painted a steady labor market picture, falling 13,000 to 224,000, essentially matching expectations of 225,000. These “Goldilocks” readings suggested an economy neither overheating nor deteriorating—precisely the scenario that could justify additional Federal Reserve rate cuts.

Bond markets reacted decisively to this data. The 10-year Treasury yield tumbled to a 1.5-week low of 4.10%, down 3.9 basis points on the day. Breakeven inflation expectations also retreated, with the 10-year rate falling to an 8-month low of 2.208%, suggesting traders were pricing in lower inflation ahead.

However, a wrench was thrown into the works: the December Philadelphia Fed business outlook survey unexpectedly deteriorated to -10.2 from prior expectations of 2.3—a concerning sign for near-term economic momentum.

The Tech Titans Continue Their Ascent

The Magnificent Seven technology stocks provided crucial support to the broader market. Tesla rose more than +3%, while Amazon and Meta each gained over +2%. Alphabet, Nvidia, and Microsoft all posted gains exceeding +1%, though Apple’s advance was modest at +0.13%.

Individual movers told varied stories. Trump Media & Technology Group (DJT) rocketed more than +44% after announcing a merger with TAE Technologies in an all-stock deal valued above $6 billion. Rivian Automotive surged +14% following a Baird analyst upgrade to outperform with a $25 price target. Lululemon gained more than +3% after reports that Elliott Investment Management had accumulated a stake exceeding $1 billion.

On the downside, Insmed plunged more than -15% after disclosing that a mid-stage trial of its experimental therapy for sinusitis failed to meet primary and secondary endpoints. Birkenstock dropped over -11% on disappointing 2026 guidance, while FactSet Research Systems led S&P 500 losers with a -7% decline following conservative revenue guidance for the full year.

Global Markets: Mixed Signals Overseas

International markets delivered mixed results. Europe’s Euro Stoxx 50 edged up +1.06%, while China’s Shanghai Composite managed a modest +0.16% gain. Japan’s Nikkei 225, however, fell to a 3-week low, finishing down -1.03%.

Central bank activity added nuance to the global picture. The ECB kept rates steady as expected, while raising its 2025 Eurozone GDP forecast to 1.4% from 1.2%. The Bank of England, in a 5-4 vote, cut its official rate by 25 basis points to 3.75%, signaling that gradual rate cuts would likely continue. Markets are currently pricing in only a 1% probability of an ECB rate cut at its February 5 meeting, while assigning a 27% chance to a 25 basis point Fed cut at the January 27-28 FOMC gathering.

Looking Ahead

Upcoming economic data may test market sentiment. Friday brings November existing home sales (expected +1.2% m/m) and the University of Michigan December consumer sentiment index (expected to be revised upward to 53.5 from 53.3). These readings could influence whether the upbeat momentum persists or proves ephemeral.