Breadth Chart Analyst

If you're tracking market health through breadth indicators, this skill analyzes two specific charts: the S&P 500 Breadth Index (200-day MA based) for medium-term strategic positioning and the US Stock Market Uptrend Stock Ratio for short-term tactical timing. It fetches CSV data directly from public GitHub sources, so you don't need chart images or API keys, though images add visual context. The analysis applies backtested strategies with clear thresholds: buy when the 8MA reverses from troughs below 23%, sell when the 200MA peaks near 73%, and use color shifts in the uptrend ratio for swing trades. Output is markdown reports with signal identification, scenario probabilities, and positioning recommendations. All analysis happens in English.

skills.sh installs: 3.6K
GitHub stars: 3.7K
last updated: Aug 21, 2026

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Install

$ npx -y skills add tradermonty/claude-trading-skills --skill breadth-chart-analyst --agent claude-code

Installs into .claude/skills of the current project.

Files

Breadth Chart Analyst

Overview

This skill enables specialized analysis of two complementary market breadth charts that provide strategic (medium to long-term) and tactical (short-term) market perspectives. Analyze breadth chart images to assess market health, identify trading signals based on backtested strategies, and develop positioning recommendations. All thinking and output are conducted exclusively in English.

When to Use

Use this skill when:

User provides S&P 500 Breadth Index (200-Day MA based) chart images for analysis
User provides US Stock Market Uptrend Stock Ratio chart images for analysis
User requests market breadth assessment or market health evaluation
User asks about medium-term strategic positioning based on breadth indicators
User needs short-term tactical timing signals for swing trading
User wants combined strategic and tactical market outlook
User requests breadth analysis WITHOUT providing chart images (CSV data mode)

SKILL.md on GitHub