Breadth Chart Analyst

在分析市场广度图表，特别是 S&P 500 广度指数（基于 200 天移动平均线）和美国股市上升趋势股票比率图表时，应使用此技能。当用户提供广度图表图像进行分析、请求市场广度评估、定位策略建议或希望根据广度指标了解中期战略和短期战术市场前景时，可以使用此技能。所有分析和输出均以英语进行。

## 概述（中文）

在分析市场广度图表，特别是 S&P 500 广度指数（基于 200 天移动平均线）和美国股市上升趋势股票比率图表时，应使用此技能。当用户提供广度图表图像进行分析、请求市场广度评估、定位策略建议或希望根据广度指标了解中期战略和短期战术市场前景时，可以使用此技能。所有分析和输出均以英语进行。

## 原文

# 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.

## Core Principles

1. **Dual-Timeframe Analysis**: Combine strategic (Chart 1: 200MA Breadth) and tactical (Chart 2: Uptrend Ratio) perspectives
2. **Backtested Strategy Focus**: Apply proven systematic strategies based on historical patterns
3. **Objective Signal Identification**: Focus on clearly defined thresholds, transitions, and markers
4. **English Communication**: Conduct all analysis and generate all reports in English
5. **Actionable Recommendations**: Provide specific positioning guidance for different investor types

## Chart Types and Purposes

### Chart 1: S&P 500 Breadth Index (200-Day MA Based)

**Purpose**: Medium to long-term strategic market positioning

**Key Elements**:
- **8-Day MA (Orange Line)**: Short-term breadth trend, primary entry signal generator
- **200-Day MA (Green Line)**: Long-term breadth trend, primary exit signal generator
- **Red Dashed Line (73%)**: Average peak level - market overheating threshold
- **Blue Dashed Line (23%)**: Average 8MA trough level - extreme oversold, excellent buying opportunity
- **Triangles**:
  - Purple ▼ = 8MA troughs (buy signal when reverses)
  - Blue ▼ = 200MA troughs (major cycle lows)
  - Red ▲ = 200MA peaks (sell signal)
- **Pink Background**: Downtrend periods

**Backtested Strategy**:
- **BUY**: When 8MA reverses from a trough (especially below 23%)
- **SELL**: When 200MA forms a peak (typically near/above 73%)
- **Result**: Historically high performance, avoids bear markets

### Chart 2: US Stock Market - Uptrend Stock Ratio

**Purpose**: Short-term tactical timing and swing trading

**Key Elements**:
- **Uptrend Stock Definition**: Stocks above 200MA/50MA/20MA with positive 1-month performance
- **Green Regions**: Market in uptrend phase
- **Red Regions**: Market in downtrend phase
- **~10% Level (Lower Orange Dashed)**: Short-term bottom, extreme oversold
- **~40% Level (Upper Orange Dashed)**: Short-term top, market overheating

**Swing Trading Strategy**:
- **ENTER LONG**: When color changes from red to green (especially from <10-15% levels)
- **EXIT LONG**: When color changes from green to red (especially from >35-40% levels)
- **Timeframe**: Days to weeks

## Analysis Workflow

### Step 1: Receive Chart Images and Prepare Analysis

When the user provides breadth chart images for analysis:

1. Confirm receipt of chart image(s)
2. Identify which chart(s) are provided:
   - Chart 1 only (200MA Breadth)
   - Chart 2 only (Uptrend Ratio)
   - Both charts
3. Note any specific focus areas or questions from the user
4. Proceed with systematic analysis

**Language Note**: All subsequent thinking, analysis, and output will be in English.

### Step 2: Load Breadth Chart Methodology

Before beginning analysis, read the comprehensive breadth chart methodology:

```
Read: references/breadth_chart_methodology.md
```

This reference contains detailed guidance on:
- Chart 1: 200MA-based breadth index interpretation and strategy
- Chart 2: Uptrend stock ratio interpretation and strategy
- Signal identification and threshold significance
- Strategy rules and risk management
- Combining both charts for optimal decision-making
- Common pitfalls to avoid

### Step 3: Examine Sample Charts (First Time or for Reference)

To understand the chart format and visual elements, review the sample charts included in this skill:

```
View: assets/SP500_Breadth_Index_200MA_8MA.jpeg
View: assets/US_Stock_Market_Uptrend_Ratio.jpeg
```

These samples demonstrate:
- Visual appearance and structure of each chart type
- How signals and thresholds are displayed
- Color coding and marker systems
- Historical patterns and cycles

### Step 4: Analyze Chart 1 (200MA-Based Breadth Index)

If Chart 1 is provided, conduct systematic analysis:

#### 4.1 Extract Current Readings

From the chart image, identify:
- **Current 8MA level** (orange line): Specific percentage
- **Current 200MA level** (green line): Specific percentage
- **8MA slope**: Rising, falling, or flat
- **200MA slope**: Rising, falling, or flat
- **Distance from 73% threshold**: How close to overheating
- **Distance from 23% threshold**: How close to extreme oversold
- **Most recent date** visible on the chart

#### 4.1.5 CRITICAL: Latest Data Point Detailed Trend Analysis

**This step is MANDATORY to avoid misreading recent trend changes.**

**CRITICAL WARNING**: Charts can be deceptive. The MAJORITY of analysis errors occur because the analyst:
1. Confuses the 8MA (orange) with the 200MA (green)
2. Reads historical trends instead of the CURRENT rightmost data points
3. Misidentifies which line is rising vs falling

**BEFORE analyzing trend direction, FIRST confirm line colors**:
- ✓ **8MA = ORANGE line** (fast-moving, more volatile)
- ✓ **200MA = GREEN line** (slow-moving, smoother)
- If unsure which is which, STOP and re-examine the chart legend/colors

Focus intensively on the **rightmost 3-5 data points** of the chart (most recent weeks):

**For 8MA (Orange Line) - Analyze the very latest trajectory**:
1. **Identify the absolute latest position**: Where is the 8MA at the rightmost edge of the chart?
2. **Trace back 3-5 data points** (approximately 3-5 weeks):
   - What was the 8MA level 1 week ago?
   - What was the 8MA level 2 weeks ago?
   - What was the 8MA level 3 weeks ago?
3. **Calculate the directional change**:
   - Is the latest value HIGHER or LOWER than 1 week ago?
   - Is the latest value HIGHER or LOWER than 2 weeks ago?
   - What is the trend: consistently rising, consistently falling, or mixed?
4. **Determine the CURRENT slope** (not historical slope):
   - **Rising**: Latest data point is higher than previous 2-3 points AND shows upward curvature
   - **Falling**: Latest data point is lower than previous 2-3 points AND shows downward curvature
   - **Flat**: Latest data point is approximately equal to previous points (within 2-3%)

**Critical Questions to Answer**:
- [ ] Is the 8MA currently moving UP or DOWN at the rightmost edge?
- [ ] If there was a recent trough, has the 8MA **sustained** the upward move, or has it rolled over?
- [ ] Count consecutive periods of increase: How many consecutive periods has 8MA risen? (Need 2-3 for confirmation)
- [ ] Count consecutive periods of decrease: How many consecutive periods has 8MA fallen? (Indicates failed reversal if declining after trough)

**For 200MA (Green Line) - Analyze the very latest trajectory**:
1. **Identify the absolute latest position**: Where is the 200MA at the rightmost edge?
2. **Trace back 4-6 weeks**:
   - What was the 200MA level 2 weeks ago?
   - What was the 200MA level 4 weeks ago?
3. **Determine the CURRENT slope**:
   - Is it rising, falling, or flat in the most recent period?

**Failed Reversal Detection** (CRITICAL):
If an 8MA trough (purple ▼) was recently identified:
- [ ] Did the 8MA rise for only 1-2 periods and then turn back down?
- [ ] Did the 8MA fail to reach 60% before turning down?
- [ ] Is the 8MA currently declining again after the bounce?
- **If YES to any**: This is a **FAILED REVERSAL** - DO NOT ENTER, signal is INVALID

**Example Analysis Format**:
```
Latest 8MA Data Points (rightmost to left):
- Current (Week 0): 48%
- 1 week ago: 52%
- 2 weeks ago: 55%
- 3 weeks ago: 50%

Analysis: 8MA is FALLING. It rose from 50% to 55% (weeks 3-2), but has since declined to 48%.
This shows a failed reversal pattern - bounce was temporary, downtrend has resumed.
SLOPE: F