Market Cap Map — 19 Aug 2026

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Aug 19, 2026

S&P 500 movers — August 19, 2026

S&P 500 closed up 0.41%

Of the 502 companies tracked in the S&P 500, 280 rose and 221 fell, with 1 unchanged. Healthcare led the day at +4.90%, while Industrials lagged at -0.82%.

Top gainers · S&P 500
  • MRNA Moderna, Inc. +176.97%
  • EL Estee Lauder Companies, Inc. (T +16.30%
  • MRK Merck & Company, Inc. +12.60%
  • ARE Alexandria Real Estate Equities +10.27%
  • MRVL Marvell Technology, Inc. +9.85%
  • COIN Coinbase Global, Inc. +9.55%
  • ILMN Illumina, Inc. +8.87%
  • CVNA Carvana Co. +8.37%
Top losers · S&P 500
  • STX Seagate Technology Holdings PLC -7.87%
  • STLD Steel Dynamics, Inc. -7.53%
  • WDC Western Digital Corporation -6.87%
  • DELL Dell Technologies Inc. -6.64%
  • LRCX Lam Research Corporation -6.33%
  • KEYS Keysight Technologies Inc. -6.32%
  • COHR Coherent Corp. -6.19%
  • TER Teradyne, Inc. -6.09%
By sector
  • Healthcare +4.90%
  • Consumer Discretionary +2.34%
  • Materials +1.80%
  • Real Estate +0.77%
  • Consumer Staples +0.71%
  • Communication Services +0.36%
  • Utilities +0.03%
  • Energy -0.30%
  • Financials -0.50%
  • Technology -0.71%
  • Industrials -0.82%
S&P 500 Market News· 19 Aug 2026
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