US Close 5 October 2026: Nasdaq Record at 27,477 as AI Leaders and Two Buyouts Lift the S&P 500 0.66%
The S&P 500 closed at 7,773.95 on 5 October 2026, up 51.23 points or 0.66%, as six AI-linked index leaders added about 44 bps and the Nasdaq Composite set a record close at 27,477.31. PTC.US jumped 33.49% to $192.26 after Schneider Electric agreed to buy it for $205 a share in cash, and RXO.US gained 22.54% on a cash-and-stock offer from CHRW.US. The 10-year Treasury yield held at 5.311%, up 3.4 bp, after September ISM services prices rose to 74 from 72.6.
At a glance
| Index | Close | Change |
|---|---|---|
| S&P 500 | 7,773.95 | +0.66% |
| Nasdaq Composite | 27,477.31 | +1.05% |
| Dow Jones Industrial Average | 51,267.90 | +0.18% |
| Russell 2000 | 2,847.14 | +0.50% |
| VIX | 15.52 | +1.37% |
US 10-year yield 5.311%, up 3.4 bp. US Dollar Index 102.13, up 0.19%. WTI crude US$89.30, down 1.99%. Gold US$4,167.60, up 0.13%.
What moved the index
The S&P 500 gained 66 bps on 5 October 2026, and six AI-linked index leaders supplied about two thirds of it.
| Driver | Move | Approx. index weight | Contribution |
|---|---|---|---|
| NVDA.US | +2.12% | about 7.5% | about +16 bps |
| MSFT.US | +1.48% | about 6% | about +9 bps |
| AVGO.US, META.US, TSLA.US, GOOGL.US | +0.86% to +2.20% | about 12% combined | about +19 bps |
| Financials (XLF.US) | +0.73% | about 13% | about +9 bps |
| Health care (XLV.US) | +0.72% | about 9% | about +6 bps |
| Energy and materials (XLE.US, XLB.US) | +1.00%, +1.31% | about 5% combined | about +5 bps |
- NVDA.US +2.12% to $238.90, a record close above its 14 May high of $235.74, worth about 16 bps on its own.
- MSFT.US +1.48% to $525.18 after Melius Research upgraded it to buy, citing an edge in AI security and governance work.
- $741.90 on META.US (+1.90%), with AVGO.US +2.08% and TSLA.US +2.20% alongside it; GOOGL.US added 0.86%.
- AAPL.US -0.24% and AMZN.US -0.05% took back about 2 bps between them.
Together these drivers account for about 62 bps of the 66 bps move; the residual is spread across utilities, staples and industrials, each up 0.09% to 0.63%.
Session highlights
Brazil-exposed US listings posted 15 of the 25 largest gains above $2 billion in market value on 5 October 2026 after Flávio Bolsonaro edged President Lula by about 2 percentage points in Sunday's first-round vote.
- EWZ.US +12.54% to $42.98; Brazil's Ibovespa closed +7.70% at 206,911.89 and the real strengthened 4.36% to 4.9947 per dollar.
- 18.75% was the gain on BBD.US to $4.33, with ITUB.US +15.48% to $9.92 and BDORY.US +17.04% to $5.29.
- NU.US +13.03% to $15.18, MELI.US +9.67% to $1,860.61, PBR.US +11.50% to $24.14.
- PCVX.US +30.70% to $73.82 after VAX-31 met its primary goals in the OPUS-1 Phase 3 adult trial, with immune responses comparable to Pfizer's Prevnar 20 and Merck's Capvaxive; the stock traded more than 50% higher earlier in the session.
- CBRS.US +9.08% to $181.55 after OpenAI chief executive Sam Altman called Cerebras "a close partner."
- TSM.US +2.75% to $485.80 and SPCX.US +7.63% to $171.09 after Elon Musk confirmed early talks with TSMC on the Terafab chip venture; INTC.US, also in the project, fell 2.63% to $116.19.
- ADSK.US +4.51% to $221.56 as the PTC.US price reset values across engineering software.
Sector scorecard
Ten of the eleven S&P 500 sectors rose on 5 October 2026, with materials the strongest at +1.31%.
- Best: XLB.US +1.31%, then XLC.US +1.17% and XLE.US +1.00%.
- Worst: XLRE.US -0.34%, the only sector lower, with the 10-year at 5.311%.
- Dispersion (best minus worst): 1.65 pts.
- XLK.US +0.56% trailed the Nasdaq's 1.05% as AAPL.US slipped and AMD.US fell 0.34%; SMH.US rose 0.52%.
Top movers
| Ticker | Move | Reason |
|---|---|---|
| PTC.US | +33.49% | Schneider Electric all-cash deal at $205 a share, a 42.3% premium |
| XP.US | +30.93% | Brazil rally after the first-round election result |
| PCVX.US | +30.70% | VAX-31 met OPUS-1 Phase 3 primary goals |
| RXO.US | +22.54% | CHRW.US offer: $30.25 in cash, 0.1992 CHRW shares, or a mix |
| PAGS.US | +21.40% | Brazil rally after the first-round election result |
| SPHR.US | -13.61% | Craig-Hallum downgrade to hold on softer "Wizard of Oz" demand |
| CHRW.US | -10.85% | Buyer of RXO.US; the deal includes new CHRW shares |
| SECZ.US | -9.93% | Unannounced, likely flow-driven. |
| PGEN.US | -9.37% | Unannounced, likely flow-driven. |
| UMC.US | -8.95% | Priced $1.8 billion of overseas convertible bonds |
- LEN.US -6.73% to $74.44 and MRP.US -5.50% to $22.51 after a Hunterbrook Media short report on Friday questioned Millrose's single-family rental economics and Lennar's influence over its strategy.
- HOG.US +6.68% to $26.19 on a Citi upgrade to buy; DKNG.US +5.43% to $19.60 on a Bank of America upgrade to buy.
After-hours earnings
The after-hours calendar carried no large-cap reports on 5 October 2026, per the TradingKey week-ahead schedule; STZ.US reports after Tuesday's close as the first of the week.
- PTC.US closed at $192.26, 6.2% below the $205 offer; the companies expect the deal to close by the third quarter of 2027, subject to shareholder and regulatory approval.
- CHRW.US closed at $140.61; RXO.US holders can elect $17.25 in cash plus 0.0856 of a CHRW share, $30.25 in cash, or 0.1992 of a CHRW share, prorated.
Next session catalysts (ET)
- Tue 6 Oct, 8:30am: August trade balance.
- Tue 6 Oct, after the close: STZ.US fiscal Q2 2027 results.
- Wed 7 Oct, 2:00pm: minutes of the September FOMC meeting, the first Fed read since Friday's 29,000 September payrolls print.
- Thu 8 Oct, before the open: PEP.US Q3 results; weekly jobless claims.
- Fri 9 Oct: DAL.US Q3 results; preliminary October University of Michigan sentiment.
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