S&P 500 close — Friday, 18 September 2026

S&P 500 closed up 0.15%

S&P 500 treemap for Friday, 18 September 2026: each company sized by market capitalisation and coloured by its move that day

S&P 500 movers — September 18, 2026

Of the 366 companies tracked in the S&P 500, 123 rose and 242 fell, with 1 unchanged. Technology led the day at +0.55%, while Utilities lagged at -1.29%.

Top gainers · S&P 500

SNDK Sandisk Corporation +10.99%
HOOD Robinhood Markets, Inc. +9.12%
LRCX Lam Research Corporation +6.98%
STX Seagate Technology Holdings PLC +6.93%
TER Teradyne, Inc. +5.19%
FIX Comfort Systems USA, Inc. +4.92%
KLAC KLA Corporation +4.74%
LITE Lumentum Holdings Inc. +4.17%

Top losers · S&P 500

NUE Nucor Corporation -6.32%
QCOM QUALCOMM Incorporated -5.82%
GM General Motors Company -5.10%
NFLX Netflix, Inc. -4.67%
FISV Fiserv, Inc. -4.28%
STLD Steel Dynamics, Inc. -4.11%
LEN Lennar Corporation -4.10%
GEN Gen Digital Inc. -3.97%

By sector

Technology +0.55%
Industrials +0.52%
Communication Services +0.49%
Financials +0.15%
Energy -0.05%
Healthcare -0.25%
Consumer Discretionary -0.75%
Real Estate -0.91%
Materials -1.00%
Consumer Staples -1.07%
Utilities -1.29%

Open the interactive S&P 500 map ← 17 Sep 2026 All sessions

The same session elsewhere: NASDAQ Dow Jones TSX

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