SPX Market Breadth — MBAD

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 of2026-08-20 Resolved503 / 504 SPX -0.93%
Stocks Up:157
Stocks Down:342
SPX Daily: -0.93%
Avg Daily:-0.70%
Avg Gain:+1.36%
Avg Decline:-1.65%
Avg Decline -1.65%Avg Daily -0.70%Avg Gain +1.36% -20%-10%+0%+10%+20% NVDA-0.33%AAPL-1.75%MSFT-0.65%AMZN-2.16%GOOGL-1.17%GOOG-1.02%AVGO+0.43%TSLA-1.71%LLY-2.81%META-0.04%MU+3.97%JPM-1.60%WMT-9.15%AMD+0.65%BRK.B-0.55%DE+6.94%ISRG-5.84%MRNA-23.58%LITE+6.24%COIN+7.58%Q+5.93%NDSN+8.00% Unweighted distribution (down / up) Weighted (cap-weighted) Daily return (%)

SPX Constituents Relative Impact By Market Cap

Largest Positive Impact
Top ContributorDaily %Impact Share% Weight
MU+3.97%4.11%1.54%
MRVL+5.79%1.18%0.30%
DE+6.94%1.06%0.23%
AVGO+0.43%0.72%2.51%
XOM+0.84%0.55%0.99%
TMO+2.28%0.51%0.33%
COP+3.30%0.51%0.23%
AMD+0.65%0.48%1.11%
SNDK+2.02%0.46%0.34%
LRCX+1.09%0.41%0.56%
Largest Negative Impact
Top DetractorDaily %Impact Share% Weight
WMT-9.15%8.14%1.33%
AAPL-1.75%7.89%6.74%
AMZN-2.16%6.04%4.18%
LLY-2.81%3.31%1.76%
GOOGL-1.17%2.32%2.95%
TSLA-1.71%2.31%2.02%
MSFT-0.65%2.29%5.24%
GOOG-1.02%1.89%2.75%
NVDA-0.33%1.68%7.67%
MRNA-23.58%1.61%0.10%