Rolling Risk Analyzer

Rolling Risk Analyzer

The Rolling Risk Analyzer calculates sliding-window statistical metrics—comparing short-term (20-day) against long-term (252-day) volatility, drawdowns, and returns—to identify changing market regimes and risk-adjusted efficiency.

What is Rolling Risk Analysis?

Standard risk metrics (like static annual standard deviation or beta) only capture a snapshot in time. They often miss sudden regime shifts, such as volatility contraction before an earnings move or rapid volatility expansion during a market correction.

Rolling risk analysis evaluates quantitative behavior over moving time windows. By contrasting a 20-day window (short-term monthly risk) against a 252-day window (annual trading baseline), investors can see whether a stock's risk is compressing, expanding, or deteriorating relative to its returns.

How Pierce AI Executes It

When you ask Pierce to analyze rolling risk for one or more tickers, it runs a quantitative sliding-window evaluation:

1. Short-Term Risk Window (20 Days): Pierce queries historical prices over a 20-day window to calculate mean daily return, daily standard deviation, annualized volatility (daily_stddev * sqrt(252)), and maximum drawdown.
2. Long-Term Risk Baseline (252 Days): Pierce queries the full 1-year (252 trading days) history to establish baseline volatility, annual maximum drawdown, and long-term risk parameters.
3. Volatility Regime Classification: It evaluates annualized volatility into four defined regimes:
   • Low Volatility: < 15% annualized
   • Moderate Volatility: 15% – 30% annualized
   • High Volatility: 30% – 50% annualized
   • Extreme Volatility: > 50% annualized
4. Sharpe Ratio Efficiency Proxy: Pierce computes the risk-adjusted return ratio (MEAN / STDDEV) for both windows to determine whether risk-adjusted performance is accelerating or decaying.
5. Regime Shift Detection: By comparing 20-day and 252-day standard deviations, Pierce flags volatility compression (squeeze setups) or volatility expansion (breakout or panic regimes).

Key Metrics & Deliverables

By running the Rolling Risk Analyzer, you receive:

• Sliding Window Comparison Table: Side-by-side comparison of 20-day vs. 252-day annualized volatility, average daily return, maximum drawdown, and Sharpe ratio proxy.
• Current Volatility Regime Rating: Clear rating of the stock's current volatility profile.
• Drawdown Assessment: Evaluation of recent maximum drawdown vs. 52-week worst-case drawdowns.
• Portfolio & Risk Suitability: Actionable takeaways on position sizing, stop placement, and trade suitability.

Example Prompts & Use Cases

You can invoke this skill using natural prompts such as:

• "Analyze rolling risk for MSFT. Compare short-term 20-day vs long-term 252-day volatility."
• "What is the current volatility regime for NVDA over the last month vs the past year?"
• "Evaluate rolling drawdowns and risk-adjusted returns for AAPL and GOOGL."
• "Is Tesla experiencing a volatility squeeze or expansion right now?"

Methodology Notes & Limitations

• Window Sizing: 20 trading days captures approximately one calendar month of market action, while 252 trading days represents one calendar trading year.
• Historical Nature: Rolling statistics measure past price action. Sudden geopolitical shocks, unexpected earnings releases, or macro events can alter volatility regimes immediately.
• Asset Suitability: Best suited for liquid equities, index ETFs, and commodities with continuous daily price histories.

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Note: Rolling Risk Analyzer is available on the PayGo tier and above.