S&P 500 close — Wednesday, 19 August 2026

S&P 500 closed up 0.41%

S&P 500 treemap for Wednesday, 19 August 2026: each company sized by market capitalisation and coloured by its move that day

S&P 500 movers — August 19, 2026

Of the 503 companies tracked in the S&P 500, 285 rose and 217 fell, with 1 unchanged. Healthcare led the day at +4.85%, while Industrials lagged at -0.84%.

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%
CVNA Carvana Co. +8.37%
NEM Newmont Corporation +7.85%

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 +4.85%
Consumer Discretionary +1.80%
Materials +1.76%
Consumer Staples +1.69%
Real Estate +0.77%
Communication Services +0.36%
Utilities +0.04%
Energy -0.30%
Technology -0.52%
Financials -0.52%
Industrials -0.84%

Open the interactive S&P 500 map ← 18 Aug 2026 20 Aug 2026 →All sessions

The same session elsewhere: NASDAQ Dow Jones TSX

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