Market Cap Map — 18 May 2026

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May 18, 2026

S&P 500 movers — May 18, 2026

S&P 500 closed down 0.07%

Of the 501 companies tracked in the S&P 500, 352 rose and 147 fell, with 2 unchanged. Energy led the day at +1.79%, while Technology lagged at -0.82%.

Top gainers · S&P 500
  • D Dominion Energy, Inc. +9.44%
  • CTSH Cognizant Technology Solutions +9.06%
  • NOW ServiceNow, Inc. +8.78%
  • FICO Fair Isaac Corporation +7.58%
  • IT Gartner, Inc. +6.29%
  • CPAY Corpay, Inc. +6.18%
  • BSX Boston Scientific Corporation +6.15%
  • DXCM DexCom, Inc. +5.61%
Top losers · S&P 500
  • REGN Regeneron Pharmaceuticals, Inc. -9.82%
  • LITE Lumentum Holdings Inc. -8.83%
  • VRT Vertiv Holdings, LLC -8.41%
  • FIX Comfort Systems USA, Inc. -6.94%
  • GLW Corning Incorporated -6.91%
  • STX Seagate Technology Holdings PLC -6.87%
  • BE Bloom Energy Corporation -6.25%
  • PWR Quanta Services, Inc. -6.10%
By sector
  • Energy +1.79%
  • Consumer Staples +1.27%
  • Financials +1.16%
  • Real Estate +1.14%
  • Healthcare +0.41%
  • Communication Services +0.29%
  • Consumer Discretionary +0.20%
  • Utilities +0.11%
  • Materials -0.11%
  • Industrials -0.45%
  • Technology -0.82%
Not financial advice. All data, scores, charts, and analysis on this site are provided for informational and educational purposes only and do not constitute financial, investment, legal, or tax advice. Past performance is not indicative of future results. See our Legal Notice for full details.
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