Market Cap Map — 17 Aug 2026

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Aug 17, 2026

S&P 500 movers — August 17, 2026

S&P 500 closed down 0.53%

Of the 502 companies tracked in the S&P 500, 134 rose and 366 fell, with 2 unchanged. Energy led the day at +0.88%, while Consumer Staples lagged at -1.38%.

Top gainers · S&P 500
  • SNDK Sandisk Corporation +8.88%
  • COHR Coherent Corp. +7.79%
  • FIX Comfort Systems USA, Inc. +6.04%
  • TER Teradyne, Inc. +5.81%
  • AMAT Applied Materials, Inc. +5.55%
  • MRVL Marvell Technology, Inc. +5.54%
  • WDC Western Digital Corporation +5.35%
  • PWR Quanta Services, Inc. +5.33%
Top losers · S&P 500
  • RDDT Reddit, Inc. -7.63%
  • CVNA Carvana Co. -7.28%
  • CHTR Charter Communications, Inc. -6.59%
  • STZ Constellation Brands, Inc. -6.19%
  • ALGN Align Technology, Inc. -5.60%
  • NOW ServiceNow, Inc. -5.08%
  • LHX L3Harris Technologies, Inc. -4.61%
  • KKR KKR & Co. Inc. -4.54%
By sector
  • Energy +0.88%
  • Industrials -0.13%
  • Technology -0.14%
  • Healthcare -0.19%
  • Utilities -0.38%
  • Materials -0.46%
  • Real Estate -0.86%
  • Financials -1.01%
  • Consumer Discretionary -1.05%
  • Communication Services -1.13%
  • Consumer Staples -1.38%
S&P 500 Market News· 17 Aug 2026
No headlines were saved for this day. The site keeps them from 25 September 2026 on.
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