S&P 500 close — Thursday, 17 September 2026

S&P 500 closed up 1.22%

S&P 500 treemap for Thursday, 17 September 2026: each company sized by market capitalisation and coloured by its move that day

S&P 500 movers — September 17, 2026

Of the 361 companies tracked in the S&P 500, 209 rose and 151 fell, with 1 unchanged. Technology led the day at +2.01%, while Consumer Staples lagged at -0.27%.

Top gainers · S&P 500

GNRC Generac Holdlings Inc. +18.34%
SMCI Super Micro Computer, Inc. +9.50%
MRNA Moderna, Inc. +8.55%
HPE Hewlett Packard Enterprise Comp +7.69%
INTC Intel Corporation +7.67%
SWKS Skyworks Solutions, Inc. +6.69%
SNDK Sandisk Corporation +6.21%
WDAY Workday, Inc. +6.14%

Top losers · S&P 500

TMUS T-Mobile US, Inc. -5.57%
DVA DaVita Inc. -5.56%
PSKY Paramount Skydance Corporation -4.67%
RDDT Reddit, Inc. -3.03%
VRSK Verisk Analytics, Inc. -2.90%
VZ Verizon Communications Inc. -2.87%
LITE Lumentum Holdings Inc. -2.81%
ZBH Zimmer Biomet Holdings, Inc. -2.61%

By sector

Technology +2.01%
Healthcare +0.91%
Utilities +0.88%
Materials +0.73%
Energy +0.69%
Communication Services +0.65%
Consumer Discretionary +0.63%
Real Estate +0.32%
Financials +0.21%
Industrials +0.19%
Consumer Staples -0.27%

Open the interactive S&P 500 map ← 16 Sep 2026 All sessions

The same session elsewhere: NASDAQ Dow Jones TSX

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