S&P 500 close — Thursday, 18 December 2025

S&P 500 closed up 0.93%

S&P 500 treemap for Thursday, 18 December 2025: each company sized by market capitalisation and coloured by its move that day

S&P 500 movers — December 18, 2025

Of the 501 companies tracked in the S&P 500, 269 rose and 229 fell, with 3 unchanged. Technology led the day at +1.59%, while Energy lagged at -1.45%.

Top gainers · S&P 500

MU Micron Technology, Inc. +10.21%
LRCX Lam Research Corporation +6.27%
SNDK Sandisk Corporation +6.11%
CEG Constellation Energy Corporatio +5.89%
APP Applovin Corporation +5.67%
LITE Lumentum Holdings Inc. +5.27%
WDC Western Digital Corporation +5.26%
STX Seagate Technology Holdings PLC +5.17%

Top losers · S&P 500

FDS FactSet Research Systems Inc. -7.68%
GNRC Generac Holdlings Inc. -5.41%
FANG Diamondback Energy, Inc. -4.59%
HPQ HP Inc. -4.01%
DELL Dell Technologies Inc. -3.87%
MPC Marathon Petroleum Corporation -3.66%
LEN Lennar Corporation -3.48%
APA APA Corporation -3.33%

By sector

Technology +1.59%
Communication Services +1.51%
Consumer Discretionary +1.24%
Utilities +1.16%
Industrials +0.70%
Materials +0.18%
Healthcare +0.12%
Financials -0.15%
Consumer Staples -0.46%
Real Estate -0.59%
Energy -1.45%

Open the interactive S&P 500 map ← 17 Dec 2025 19 Dec 2025 →All sessions

The same session elsewhere: NASDAQ Dow Jones TSX

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