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S&P 500 Rises 0.19% as Accenture and Synopsys Lift Tech; Mattel Jumps 19%

The 10-year yield eased to 5.24% from a 5.34% intraday high; Nike fell about 6% after the bell on a lower full-year outlook

Mixed4 min readBy Swingfolio Research

At a glance

S&P 5007,666+0.19%
NASDAQ26,872+0.04%
Dow50,927+0.04%
VIX16.39+0.31%
Russell 20002,807+0.35%
US Dollar102.01+0.55%
US 10Y5.237-1.06%

Top gainers

  • MAT.USMattel Inc+18.80%
  • ACN.USAccenture plc+15.78%
  • SNPS.USSynopsys Inc+12.78%
  • FICO.USFair Isaac Corporation+11.69%
  • EFXT.USEnerflex Ltd.+11.63%

Top losers

  • NKTR.USNektar Therapeutics-22.39%
  • PSKY.USParamount Skydance Corporation-9.58%
  • GRND.USGrindr Inc-8.17%
  • AMC.USAMC Entertainment Holdings Inc-8.00%
  • SLS.USSellas Life Sciences Group Inc-7.96%

S&P 500 Rises 0.19% as Accenture and Synopsys Lift Tech; Mattel Jumps 19%

S&P 500 close: 7,666.45 (+0.19%) Nasdaq / Dow: 26,871.60 (+0.04%) / 50,926.56 (+0.04%) Sentiment: mixed

The S&P 500 closed at 7,666.45 on 1 October 2026, up 0.19%, as the technology sector fund gained 1.05% on results from Accenture ACN.US and Synopsys SNPS.US, and the US 10-year yield fell back to 5.24% after touching 5.34% intraday. MAT.US rose 18.80% to $15.04 after reports that Authentic Brands Group has discussed an offer of more than $20 a share, or about $6 billion. The ISM manufacturing prices index jumped 6.8 points to 77.9 in September, even as the headline PMI eased to 54.5 against 55.0 expected.

What moved the index

The S&P 500 gained 14.91 points, or about 19 bps, after trading as low as 7,616.78 (-0.45%) in the morning.

  • Technology: XLK.US +1.05%, worth about +35 bps at roughly a third of index weight. ACN.US +15.78%, SNPS.US +12.78% and CDNS.US +6.22% led, with NVDA.US +1.09% and MU.US +3.03% after Micron's fiscal fourth-quarter beat. AAPL.US -0.81% and AVGO.US -2.15% offset part of the gain.
  • Energy and industrials: XLE.US +1.95% and XLI.US +0.99%, worth about +14 bps combined. Refiners MPC.US (+6.25%), VLO.US (+5.38%) and PSX.US (+3.49%) rose with WTI crude, up 2.75% to $92.91, after Reuters reported Chinese refiners suspended October fuel exports.
  • Health care: XLV.US -1.32%, worth about -12 bps. ALNY.US fell 6.31%, RGEN.US 7.80% and INSM.US 4.86%.
  • Communication services: XLC.US -0.93%, worth about -9 bps. GOOGL.US lost 1.70%, NFLX.US 2.49% and PSKY.US 9.58%.

Together these four groups net to about +28 bps against the 19 bps gain. Staples (XLP.US -0.33%), real estate (XLRE.US -0.56%) and materials (XLB.US -0.33%) took off roughly 3 bps more; the remaining 6 bps gap is within the error of the approximate sector weights.

Session highlights

  • 5.237% on the US 10-year yield at the close, down 5.6 bps, after an intraday high of 5.342%. The bond market ended its worst quarter in decades on 30 September.
  • 54.5 on the ISM manufacturing PMI, down 0.1 point and below the 55.0 forecast. New orders rose to 55.3 from 53.7 and employment to 52.7 from 51.2.
  • 197,000 initial jobless claims in the week to 26 September, the fourth straight weekly decline, against 200,000 expected.
  • 102.01 on the US Dollar Index, up 0.55%. Gold rose 0.50% to $4,207.80 an ounce and Bitcoin 0.96% to $84,535.
  • 2,806.63 on the Russell 2000 (+0.35%); the VIX rose 0.31% to 16.39.
  • STOXX 600 -1.30% to 626.65, DAX -1.03% and FTSE 100 -1.68% at the European close, after Japan's Nikkei 225 gained 3.30% overnight.

Sector scorecard

  • Best: Energy (XLE.US +1.95%)
  • Worst: Health care (XLV.US -1.32%)
  • Dispersion (best minus worst): 3.27 pts
  • IT services rose as a group after Accenture: CTSH.US +5.99%, EPAM.US +5.53%, INFY.US +5.48%, EXLS.US +6.11% and KD.US +7.64%. Optical networking names followed COHR.US (+10.90%): CIEN.US +7.77%, LITE.US +7.67% and AAOI.US +8.12%.

Top movers

TickerMoveReason
MAT.US+18.80%Authentic Brands reportedly discussed an offer above $20 a share
ACN.US+15.78%Q4 revenue of $18.68 billion topped its own guidance range; record bookings
SNPS.US+12.78%Investor Day: 2027 revenue up to $11.2 billion, AWS and OpenAI deals
FICO.US+11.69%Partial rebound after a two-day decline; no company announcement found.
EFXT.US+11.63%450 MW gas-fired power contract with a data-center developer
NKTR.US-22.39%Alopecia trial data showed fading response after treatment stopped
PSKY.US-9.58%Priced $41.4 billion of secured notes for the Warner Bros. Discovery deal
GRND.US-8.17%$250 million deal for PurposeMed, parent of telehealth service Freddie
AMC.US-8.00%Cinema stocks fell together; AMC priced new debt
SLS.US-7.96%Unannounced, likely flow-driven.

CTVA.US printed -83.81% to $12.57 because Corteva completed the spin-off of its seed business on 1 October. Each Corteva holder received one share of Vylor VYLR.US, which closed its first regular session at $68.26, up 3.42% from its reference price of $66.00. The table excludes CTVA.US for that reason.

After-hours earnings

NKE.US reported fiscal first-quarter 2027 revenue of $11.2 billion after the 1 October close, down 4% and below the roughly $11.32 billion consensus, with diluted EPS of $0.48 against $0.44 expected. Nike guided fiscal 2027 revenue to fall by a high-single-digit percentage and adjusted EPS to $1.15 to $1.35, against analyst estimates near $1.65. Shares fell about 5.8% after the bell, according to post-market reports, from a regular-session close of $35.15 (-0.71%), its lowest close since 2014. Gross margin rose 60 bps to 42.8%.

Notable announcements

  • SNPS.US signed a chip-design agreement with Amazon Web Services worth more than $1 billion, announced GPT-Synopsys with OpenAI on a revenue-sharing basis, and plans to repurchase about $1 billion of shares.
  • COHR.US gained 10.90% after Bernstein started coverage on 30 September, citing optical-module demand as data-center switches move to higher speeds.
  • MU.US closed at $1,097.39 (+3.03%) in its first session after fiscal fourth-quarter revenue of $54.23 billion and first-quarter EPS guidance of $37.15 to $39.15.
  • AVGO.US fell 2.15% after reports that it is lending $42 billion to Anthropic.
  • MKC.US fell 4.87% on the day it reported quarterly results, and PPC.US lost 6.70%.

Next session catalysts (ET)

  • Fri 08:30: September employment report; forecasts cluster around 89,000 to 93,000 new jobs after August's 162,000, with unemployment at 4.1%
  • Fri 09:30: NKE.US first regular session after its fiscal first-quarter results and lower full-year guidance
  • Wed 28 Oct 14:00: FOMC rate decision

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