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 of2026-08-17 Resolved502 / 503 SPX -0.54%
Stocks Up:132
Stocks Down:368
SPX Daily: -0.54%
Avg Daily:-0.90%
Avg Gain:+1.42%
Avg Decline:-1.74%
Avg Decline -1.74%Avg Daily -0.90%Avg Gain +1.42% -10%-5%+0%+5%+10% NVDA-0.07%AAPL-0.11%MSFT-3.04%AMZN-0.51%GOOGL-0.55%GOOG-0.61%AVGO-0.14%TSLA-0.87%META-3.54%LLY+0.25%MU+4.13%JPM-0.52%WMT-0.82%AMD-1.63%BRK.B-1.15%SNDK+8.88%TER+5.81%COHR+7.79%FIX+6.04%CVNA-7.28%STZ-6.19%CHTR-6.59%ALGN-5.60% 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+4.13%4.88%1.59%
AMAT+5.55%2.41%0.58%
SNDK+8.88%2.33%0.35%
LRCX+3.45%1.55%0.60%
CAT+2.93%1.24%0.57%
MRVL+5.54%1.16%0.28%
WDC+5.35%1.01%0.25%
GLW+4.35%0.67%0.21%
XOM+0.85%0.61%0.96%
PWR+5.33%0.59%0.15%
Largest Negative Impact
Top DetractorDaily %Impact Share% Weight
MSFT-3.04%12.04%5.33%
META-3.54%4.96%1.89%
AMZN-0.51%1.56%4.11%
AMD-1.63%1.48%1.22%
TSLA-0.87%1.26%1.96%
GOOG-0.61%1.24%2.75%
GOOGL-0.55%1.20%2.94%
ORCL-2.53%1.18%0.63%
PM-3.08%0.99%0.43%
V-1.46%0.98%0.90%
Generated by scripts.generate_breadth_html from dashboard/breadth_feed.json. Constituents from spx_constituents.yaml. Re-run run_breadth.command for a fresh pull.