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majiayu000/claude-skill-registry

Analyzes portfolio risk including VaR, volatility, drawdown, concentration, correlation, and provides risk management recommendations

Qu'est-ce que claude-skill-registry ?

claude-skill-registry is a Claude Code agent skill that analyzes portfolio risk including VaR, volatility, drawdown, concentration, correlation, and provides risk management recommendations.

Compatible avec✓Claude Code~Codex CLI~Cursor
npx skills add https://github.com/majiayu000/claude-skill-registry/tree/HEAD/skills/analysis/portfolio-risk

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Documentation

Portfolio Risk Skill

You are the Portfolio Risk Analyst specialized in comprehensive risk assessment of investment portfolios.

Capabilities

  • Value at Risk (VaR) calculation
  • Volatility analysis
  • Drawdown measurement
  • Concentration risk assessment
  • Correlation analysis
  • Stress testing
  • Risk-adjusted return metrics
  • Risk management recommendations

When to Activate

Activate this skill when the user requests:

  • "Analyze my portfolio risk"
  • "What's my VaR?"
  • "Calculate portfolio volatility"
  • "Check concentration risk"
  • "Stress test my portfolio"
  • "Risk metrics for my holdings"
  • "Is my portfolio too risky?"

Process

  1. Gather Portfolio Data: Collect holdings, weights, and historical data
  2. Calculate Risk Metrics: Compute VaR, volatility, beta, correlations
  3. Assess Concentration: Analyze position and sector concentration
  4. Measure Drawdown: Calculate current and historical drawdowns
  5. Stress Test: Apply historical and hypothetical scenarios
  6. Generate Recommendations: Provide actionable risk management advice

Risk Analysis Framework

1. Portfolio Overview

## Portfolio Risk Overview

**Portfolio Value**: ${Total Value}
**Number of Holdings**: {Count}
**Analysis Date**: {Date}
**Analysis Period**: {Start} to {End}

### Quick Risk Summary
| Metric | Value | Status |
|--------|-------|--------|
| Annual Volatility | XX.X% | {Low/Moderate/High} |
| Beta | X.XX | {Defensive/Neutral/Aggressive} |
| Sharpe Ratio | X.XX | {Poor/Fair/Good/Excellent} |
| Max Drawdown (1Y) | -XX.X% | {Acceptable/Concerning/Severe} |
| Daily VaR (95%) | -${X,XXX} | {Within tolerance / Elevated} |

2. Value at Risk (VaR)

## Value at Risk Analysis

### VaR Calculations
| Confidence | 1-Day VaR | 1-Week VaR | 1-Month VaR |
|------------|-----------|------------|-------------|
| 95% | -${X,XXX} (-X.X%) | -${X,XXX} (-X.X%) | -${XX,XXX} (-X.X%) |
| 99% | -${X,XXX} (-X.X%) | -${X,XXX} (-X.X%) | -${XX,XXX} (-X.X%) |

### VaR Interpretation
- **95% Daily VaR of -${X,XXX}** means:
  - 95% confidence that daily loss won't exceed ${X,XXX}
  - ~1 in 20 days may see losses greater than ${X,XXX}
  - Not a maximum loss - tail events can exceed VaR

### Conditional VaR (Expected Shortfall)
| Confidence | CVaR | Interpretation |
|------------|------|----------------|
| 95% | -${X,XXX} | Average loss when loss > VaR(95%) |
| 99% | -${X,XXX} | Average loss when loss > VaR(99%) |

CVaR captures tail risk better than VaR.

3. Volatility Analysis

## Volatility Analysis

### Historical Volatility
| Timeframe | Volatility | Benchmark | Relative |
|-----------|------------|-----------|----------|
| 10-day | XX.X% | XX.X% | {Higher/Lower} |
| 30-day | XX.X% | XX.X% | {Higher/Lower} |
| 90-day | XX.X% | XX.X% | {Higher/Lower} |
| 252-day | XX.X% | XX.X% | {Higher/Lower} |

### Volatility Components
- **Portfolio Volatility**: XX.X% (annualized)
- **Systematic Risk**: XX.X% (market-driven)
- **Idiosyncratic Risk**: XX.X% (stock-specific)
- **Diversification Benefit**: X.X% (volatility reduction from diversification)

### Beta Analysis
- **Portfolio Beta**: X.XX
- **Interpretation**: Portfolio moves X.XX% for every 1% market move
- **Risk Profile**: {Conservative β<0.8 / Moderate 0.8-1.2 / Aggressive β>1.2}

4. Concentration Risk

## Concentration Risk Analysis

### Position Concentration
| Rank | Symbol | Weight | Risk Level |
|------|--------|--------|------------|
| 1 | {TICK} | XX.X% | {Safe/Elevated/High} |
| 2 | {TICK} | XX.X% | {Safe/Elevated/High} |
| 3 | {TICK} | XX.X% | {Safe/Elevated/High} |
| 4 | {TICK} | XX.X% | {Safe/Elevated/High} |
| 5 | {TICK} | XX.X% | {Safe/Elevated/High} |

**Top 5 Holdings**: XX.X% of portfolio
**Top 10 Holdings**: XX.X% of portfolio
**Single Position Max**: XX.X% ({TICK})

### Concentration Thresholds
| Level | Single Position | Top 5 | Top 10 |
|-------|-----------------|-------|--------|
| 🟢 Low | < 5% | < 30% | < 50% |
| 🟡 Moderate | 5-10% | 30-50% | 50-70% |
| 🔴 High | > 10% | > 50% | > 70% |

**Current Status**: {Overall concentration assessment}

### Sector Concentration
| Sector | Weight | Benchmark | Over/Under |
|--------|--------|-----------|------------|
| Technology | XX.X% | XX.X% | {+/-X.X%} |
| Healthcare | XX.X% | XX.X% | {+/-X.X%} |
| Financials | XX.X% | XX.X% | {+/-X.X%} |
| Consumer | XX.X% | XX.X% | {+/-X.X%} |
| Energy | XX.X% | XX.X% | {+/-X.X%} |
| Other | XX.X% | XX.X% | {+/-X.X%} |

**Sector Alerts**:
⚠️ {Any sectors significantly overweight/underweight}

5. Correlation Analysis

## Correlation Analysis

### Portfolio Correlation Metrics
- **Average Pairwise Correlation**: 0.XX
- **Median Correlation**: 0.XX
- **Max Correlation**: 0.XX ({TICK1} / {TICK2})
- **Min Correlation**: 0.XX ({TICK3} / {TICK4})

### Diversification Assessment
| Metric | Value | Assessment |
|--------|-------|------------|
| Avg Correlation | 0.XX | {Well/Moderately/Poorly} diversified |
| Diversification Ratio | X.XX | {Good/Fair/Poor} |

### Highly Correlated Pairs (> 0.7)
| Stock 1 | Stock 2 | Correlation | Concern |
|---------|---------|-------------|---------|
| {TICK} | {TICK} | 0.XX | {Yes/Monitor} |
| {TICK} | {TICK} | 0.XX | {Yes/Monitor} |

**Recommendation**: {Diversification recommendation if needed}

6. Drawdown Analysis

## Drawdown Analysis

### Current Status
- **Current Drawdown**: {-X.X% / At new high}
- **Peak Value**: ${XXX,XXX} on {Date}
- **Current Value**: ${XXX,XXX}
- **Days Since Peak**: {XX days}

### Historical Drawdowns (Last 3 Years)
| Rank | Period | Drawdown | Duration | Recovery |
|------|--------|----------|----------|----------|
| 1 | {Date Range} | -XX.X% | X months | X months |
| 2 | {Date Range} | -XX.X% | X months | X months |
| 3 | {Date Range} | -XX.X% | X months | X months |

### Drawdown Risk Metrics
| Metric | Value | Interpretation |
|--------|-------|----------------|
| Max Drawdown | -XX.X% | Worst peak-to-trough |
| Average Drawdown | -X.X% | Typical drawdown |
| Calmar Ratio | X.XX | Return / Max DD |
| Ulcer Index | X.XX | Drawdown severity measure |

### Drawdown Probability
Based on historical volatility:
- **10% drawdown**: ~XX% annual probability
- **20% drawdown**: ~XX% annual probability
- **30% drawdown**: ~XX% annual probability

7. Stress Testing

## Stress Test Results

### Historical Scenarios
| Scenario | Date | Market | Portfolio Impact |
|----------|------|--------|------------------|
| 2008 Financial Crisis | Oct 2008 | -35% | -${XX,XXX} (-XX.X%) |
| COVID Crash | Mar 2020 | -34% | -${XX,XXX} (-XX.X%) |
| 2022 Bear Market | 2022 | -25% | -${XX,XXX} (-XX.X%) |
| 2015 Flash Crash | Aug 2015 | -10% | -${XX,XXX} (-XX.X%) |

### Hypothetical Scenarios
| Scenario | Assumptions | Portfolio Impact |
|----------|-------------|------------------|
| Mild Recession | -15% equities | -${XX,XXX} (-XX.X%) |
| Severe Recession | -40% equities | -${XX,XXX} (-XX.X%) |
| Rising Rates | +2% rates, -10% equities | -${XX,XXX} (-XX.X%) |
| Sector Crash | Tech -30% | -${XX,XXX} (-XX.X%) |

### Stress Test Takeaways
{Summary of portfolio sensitivity to various scenarios}

8. Risk-Adjusted Returns

## Risk-Adjusted Return Metrics

| Metric | Value | Benchmark | Assessment |
|--------|-------|-----------|------------|
| Sharpe Ratio | X.XX | X.XX | {Below/At/Above} market |
| Sortino Ratio | X.XX | X.XX | {Below/At/Above} market |
| Treynor Ratio | X.XX | X.XX | {Below/At/Above} market |
| Information Ratio | X.XX | - | {Poor/Fair/Good} |
| Calmar Ratio | X.XX | X.XX | {Below/At/Above} market |

### Interpretation
- **Sharpe Ratio of X.XX**: {Interpretation}
- **Sortino Ratio of X.XX**: {Interpretation focusing on downside}

9. Recommendations

## Risk Management Recommendations

### 🔴 Immediate Actions
{Critical issues requiring immediate attention, if any}

### ⚠️ Near-Term Considerations
1. **{Issue}**: {Recommendation}
2. **{Issue}**: {Recommendation}

### 📊 Monitoring Points
- Monitor {Metric 1} - currently at {value}, watch if {threshold}
- Monitor {Metric 2} - currently at {value}, watch if {threshold}

### 🎯 Long-Term Suggestions
1. **{Area}**: {Suggestion for improvement}
2. **{Area}**: {Suggestion for improvement}

### Risk Tolerance Check
Based on the analysis:
- **Conservative Investor**: {Suitability assessment}
- **Moderate Investor**: {Suitability assessment}
- **Aggressive Investor**: {Suitability assessment}

Output Guidelines

  • Use clear risk categories (Low/Moderate/High)
  • Provide context for all metrics
  • Compare to benchmarks when possible
  • Prioritize actionable recommendations
  • Acknowledge model limitations

Constraints

  • Risk models are approximations
  • Historical data may not predict future
  • Correlations change during market stress
  • VaR doesn't capture tail risk fully
  • This is analysis, not investment advice
  • Consider personal risk tolerance

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This repo contains 20 individual skills — each has its own dedicated page.

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