SPX Market Breadth

Distribution of constituent daily returns vs. their cap-weighted contribution to the index. Where the curves diverge, the index is being pushed by names that are out of sync with the broader market.

As of2026-09-17 Coverage503 of 504 constituents SPX +1.14%
Stocks Up:292
Stocks Down:208
SPX Daily: +1.14%
Avg Daily:+0.47%
Avg Gain:+1.52%
Avg Decline:-1.00%
Avg Decline -1.00%Avg Daily +0.47%Avg Gain +1.52% -10%+0%+10% NVDA+2.54%AAPL+1.38%MSFT+1.50%AMZN+2.13%GOOGL+1.30%GOOG+1.28%AVGO+2.29%META+1.34%TSLA+2.27%LLY+1.28%MU+5.50%JPM+0.11%WMT-0.66%AMD+6.36%BRK.B-2.04%INTC+7.67%SNDK+6.21%HPE+7.69%MRNA+8.55%SMCI+9.50%SWKS+6.69%GNRC+18.34% Unweighted distribution (down / up) Weighted (cap-weighted) Daily return (%)

SPX Constituents Relative Impact By Market Cap

Largest Positive Impact
Top ContributorDaily %Impact Share% Weight
NVDA+2.54%12.35%7.67%
AAPL+1.38%6.31%7.22%
MU+5.50%5.42%1.56%
AMZN+2.13%5.32%3.95%
MSFT+1.50%5.15%5.42%
AMD+6.36%5.01%1.25%
INTC+7.67%3.68%0.76%
AVGO+2.29%3.49%2.40%
TSLA+2.27%3.02%2.10%
GOOGL+1.30%2.47%2.99%
Largest Negative Impact
Top DetractorDaily %Impact Share% Weight
BRK.B-2.04%1.41%1.09%
TMUS-5.57%0.99%0.28%
CRM-3.07%0.60%0.31%
VZ-2.87%0.56%0.31%
WMT-0.66%0.53%1.27%
NFLX-1.44%0.44%0.48%
RTX-1.67%0.42%0.39%
BA-2.46%0.37%0.24%
T-1.82%0.30%0.26%
CMCSA-3.46%0.27%0.12%