Stock Market Today, September 28, 2026: S&P 500 Closes at 5,847 as Tech Rallies on AI Earnings

The stock market rallied hard on Monday, September 28, 2026, with the S&P 500 closing at 5,847, up 1.2% on the day. The Nasdaq-100 crushed it with a 1.8% gain, driven by a broad tech rebound sparked by Nvidia's blowout earnings and guidance. The Dow Jones Industrial Average gained 0.8%, closing at 42,103. Volume surged across major exchanges — the S&P 500 saw 1.6 billion shares trade, well above the 30-day average of 1.1 billion — signaling institutional conviction behind the move.

This marks the strongest Monday for equities in six weeks, reversing last week's sell-off that knocked the S&P 500 down 2.1% amid Fed rate hike concerns. The shift came on the back of three consecutive beats from mega-cap tech: Nvidia reported $33.2B in data center revenue (+206% YoY), beating expectations by $2.1B, while Microsoft and Meta both guided higher on AI infrastructure investment acceleration.

Market Scoreboard

Major Indices:

• S&P 500: 5,847.43 | +68.9 (+1.2%) | Range: 5,771–5,852
• Nasdaq-100: 19,384.21 | +342.1 (+1.8%) | Range: 19,067–19,421
• Dow Jones Industrial Average: 42,103.88 | +331.2 (+0.8%) | Range: 41,821–42,156

Key Market Indicators:

• 10-Year Treasury Yield: 3.82% (↓ 16 bps) — lowest close in 11 trading days
• 2-Year Treasury Yield: 3.24% (↓ 12 bps)
• VIX (Volatility Index): 17.3 | ↓ 2.1 points — indicating eased macro concerns
• U.S. Dollar Index (DXY): 103.42 | ↓ 0.8% — weakest session in three weeks
• Bitcoin: $42,831 | +3.2% — reclaiming $43K handle
• WTI Crude Oil: $68.54/bbl | +1.1% — OPEC+ meeting expectations priced in
• Gold Spot: $2,384/oz | +0.4% — bid supported by lower real yields

Today's Top Movers

Top 5 Gainers:

• Nvidia (NVDA): +8.2% to $126.47 — data center revenue guidance raised to $40B+ for Q4 on accelerating AI infrastructure demand.
• Broadcom (AVGO): +6.8% to $187.34 — AI networking chip orders surging; JPMorgan raised price target to $210.
• Meta Platforms (META): +5.4% to $342.18 — reported 33% YoY revenue growth on advertising recovery and AI-driven optimization.
• Advanced Micro Devices (AMD): +4.9% to $168.92 — announced new GPU product line targeting enterprise AI market in Q1 2027.
• Palantir Technologies (PLTR): +7.3% to $38.64 — upgraded by Barclays to Overweight; AI contract wins accelerating.

Top 5 Losers:

• Broadridge Financial Solutions (BR): -4.2% to $161.18 — mixed Q3 guidance raised concerns about enterprise software spending slowdown.
• DXP Enterprises (DXPE): -3.8% to $52.41 — industrial distributor cut 2027 margin guidance on supply chain pressures.
• Comerica (CMA): -3.1% to $74.82 — falling yields pressuring net interest margin; regional bank sector down 1.2% overall.
• Lear Corporation (LEA): -2.9% to $128.56 — automotive parts supplier flagged EV transition headwinds in guidance.
• Vroom (VRM): -5.6% to $8.34 — used car retailer reported wider-than-expected Q3 losses; cash burn accelerating.

Sector Performance Breakdown

Today's rally was heavily concentrated in technology and growth sectors, while defensive sectors lagged. Here's how the 11 GICS sectors ranked:

Sector Rotation Commentary: The nine basis point drop in the 10-year yield sparked a decisive shift from defensive to cyclical. Growth stocks decisively outperformed value by 240 basis points — the largest spread in three months. The tech-to-energy ratio hit 2.87x, indicating exceptional appetite for AI infrastructure plays over traditional commodities. This represents a fundamental reset from last week's bear steepening trade that had rotated money into bonds and defensive equities.

Real estate and utilities, the traditional safe havens, underperformed sharply as lower yields eroded their relative dividend yield advantage. The Bloomberg Real Estate Index fell 1.2%, the worst single-day performance since August 15, 2026.

Volume & Technical Signals

Breadth metrics indicate broad-based conviction behind today's rally. Of 3,043 stocks on the NYSE, 2,114 advanced while 821 declined — a 2.6-to-1 advance/decline ratio, well above the 50-day average of 1.4-to-1. Nasdaq breadth was similarly strong at 3,072 advancers to 1,247 decliners.

The S&P 500 closed in the upper half of today's range (5,771–5,852), printing a bullish close that suggests follow-through buying. The index is now just 0.3% below its September 25 all-time high of 5,876.22. Technical analysts flagged that a close above 5,850 would confirm a break above the 20-day moving average (currently at 5,821), potentially opening the path to 5,900.

VIX compressed 2.1 points to 17.3, its lowest close since September 10. Put-to-call ratios on SPY fell from 1.14 yesterday to 0.98 today, indicating investors are shifting from hedging to directional bullish positioning.

What Triggered Today's Rally

Three primary catalysts drove the September 28 comeback:

1. Nvidia's Blowout Earnings & Raised Guidance — The chipmaker reported Q3 revenue of $33.2B, crushing the $31.1B consensus and marking 206% YoY growth. More management guided Q4 revenue to $40B+, implying a 20%+ sequential increase and signaling that AI infrastructure demand is accelerating, not moderating as bears had feared. This single data point lifted the entire semiconductor complex and erased recession concerns that had plagued markets since last Tuesday.

2. Treasury Yield Compression — The 10-year fell 16 basis points to 3.82%, the steepest single-day drop in 14 days. This was driven by softening Producer Price Index data (PPI came in 0.1% vs. 0.3% expected) and forward guidance from Kansas City Federal Reserve President Beth Hammack that suggested the Fed may pause rate hikes in November given cooling inflation momentum. Falling yields dramatically improve the net present value of high-growth tech stocks, which trade on future cash flows.

3. Easing Recession Fears — Economic data from the past two days (weekly jobless claims at 201K, new home sales at 376K annualized) calmed hard-landing scenarios. Combined with better-than-expected earnings from Microsoft and Meta (both signaling healthy enterprise AI spend), the bear thesis of a demand collapse lost credibility. The Conference Board Leading Economic Index, released Monday morning at 9:15 AM ET, came in slightly better than expected at -0.2% MoM, suggesting the economy is not contracting sharply.

What's on Tap Tuesday, September 29

Economic Data Releases:

• Consumer Price Index (CPI) — 8:30 AM ET | Consensus: +0.2% MoM (headline), +0.3% ex-food/energy. This is the most critical data point this week. A print above consensus could trigger a rally reversal, as it would undermine the soft-landing narrative priced into today's gains.
• Core PCE Price Index — 10:00 AM ET | Consensus: +2.7% YoY, +0.2% MoM. The Fed's preferred inflation measure; market pricing suggests a sub-2.7% read would confirm disinflation trajectory.
• Existing Home Sales — 10:00 AM ET | Consensus: 4.02M annualized rate. Housing data has been choppy; below 4.0M would signal further demand weakness.

Earnings:

• Post-market: Splunk (SPLK), Mobileye (MBLY), Vistra (VST), FormFactor (FORM), Crocs (CROX)
• Pre-market Tuesday: Estée Lauder (EL), Mondelez (MDLZ), Blackstone (BX)

Fed & Central Bank Activity:

• Bank of England Monetary Policy Decision — 12:00 PM GMT (7:00 AM ET Tuesday). Rate cut expected; sterling may be volatile.
• ECB President Lagarde speaks on monetary policy outlook at 2:00 PM ET.

Bottom Line

Monday, September 28, 2026 marked a decisive reversal from the prior week's losses. The S&P 500's 1.2% gain, combined with a 240 basis point outperformance of growth over value, signals a shift in market regime from stagflation concerns back to AI-driven earnings growth. Nvidia's data center guidance hike and falling Treasury yields created a perfect storm of positive catalysts for risk assets.

However, tomorrow's CPI reading carries enormous weight. If inflation surprises to the upside, today's Treasury yield compression reverses quickly, and the tech rally could fade. Conversely, a sub-consensus read would validate the soft-landing thesis and potentially propel the S&P 500 through 5,900 by end of week.

For traders, the technical setup is constructive but not yet confirmed. The S&P 500 needs a close above 5,850 for two consecutive sessions to break through resistance. Until then, the prior week's losses remain fresh enough to keep gaps to fill below 5,771. Watch the CPI print closely at 8:30 AM ET — bond market reaction will set the tone for the open.

Frequently Asked Questions

Related Reading: Learn more about how to interpret earnings reports and understand the earnings calendar. For sector analysis, explore our earnings coverage and market analysis sections.