US stocks extended a four-day winning streak as semiconductor giants and AI plays lifted the market toward record territory on Tuesday.
The S&P 500 gained 0.6% and sat just shy of its all-time high, while the Nasdaq jumped on chip strength and the small-cap Russell 2000 surged 1.2%.
The development is seen as a signal that gains extended beyond big tech.
Nvidia and Broadcom, two of Wall Street’s most favoured AI picks, anchored the rally after strong earnings and analyst upgrades fueled optimism that artificial intelligence spending shows no signs of slowing.
US stocks extend rally: Are gains broad or concentrated?
Here’s what matters: Nvidia and Broadcom didn’t hog all the gains. Yes, they’re the stars. Nvidia has climbed 4.35% over the past five trading sessions, while Broadcom bounced higher after UBS lifted its price target and boosted AI revenue forecasts.
But the broader picture suggests real participation spreading beyond mega-caps.
The Russell 2000 small-cap index jumped 1.2% on Tuesday, which is a clear sign that risk appetite has returned across the market, not just in the Magnificent Seven.
Consumer staples were the only major sector to close lower, meaning nine out of 10 sectors participated in the rally.
This matters because narrow rallies, where only three or four names drive the index, tend to feel fragile. They reverse quickly when sentiment shifts.
Frank Cappelleri, a closely watched technician, noted that the S&P 500’s cumulative advance-decline ratio just logged its second consecutive all-time high.
This breadth indicator, which tracks how many stocks are advancing versus declining, is showing the strongest internal health in market history.
That’s a stark contrast to a year ago. Last December, breadth peaked around Thanksgiving, then deteriorated through the rest of the month.
This year? The opposite is happening. As long as breadth remains strong, the rally has real legs.
Fed expectations and holiday-thin volumes
The trigger for Tuesday’s rally was simple: the US economy grew 4.3% in the third quarter, crushing consensus forecasts of 3.2%.
A hotter-than-expected GDP print doesn’t usually fuel a stock rally, but context matters.
Investors see this robust growth as proof that the Fed doesn’t need to rush rate cuts, keeping policy steady around 3.6% for the end of 2025 and potentially 3.4% through 2026.
Lower future rate cuts mean higher valuations are justified for growth stocks, especially in AI and tech.
Investors punching in late-day orders could face slippage. Keep an eye on volume into year-end. A rally on thin ice can crack fast.
Strategists watching the “Santa Claus rally,” the last five trading days of December plus the first two of January, say seasonal tailwinds typically lift markets about 1.3% to 1.4% during this window.
But without broad participation, even seasonal strength falters.
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