Shiller vs Gold

Historical Market Valuations: CAPE Ratio, Home Prices, and Gold

Note: Different data sources have different date ranges available. Custom tickers from Polygon.io (free tier) are limited to 2 years of historical data.

Chart & Calculator Configuration

Display Settings

Current CAPE Ratio

Loading...

Current Gold Price

Loading...

CAPE/Gold Ratio

Loading...

Historical Percentile

Loading...

About This Chart

This visualization combines Robert Shiller's CAPE (Cyclically Adjusted Price-to-Earnings) ratio and home price data with historical gold prices to show relative valuations over time. The CAPE ratio helps identify periods of stock market overvaluation or undervaluation, while comparing it to gold provides additional context about real value.

📊 Data Sources & Availability

🏛️ Shiller CAPE Ratio

  • Date Range: 1871 - Present
  • Update Frequency: Monthly
  • Source: Shiller Wrapper Data
  • Coverage: US Stock Market (S&P 500 and predecessors)

🏠 Home Price Index

  • Date Range: 1890 - Present
  • Update Frequency: Quarterly
  • Source: Shiller Wrapper Data
  • Coverage: US National Average Home Prices

📈 S&P 500 Index

  • Date Range: 1871 - Present
  • Update Frequency: Monthly
  • Source: Shiller Wrapper Data
  • Coverage: US Stock Market (nominal and real prices)

🥇 Gold Prices

  • Date Range: 1258 - Present
  • Update Frequency: Daily (updated 6 AM UTC)
  • Source: FreeGoldAPI
  • Coverage: Historical gold prices in USD (includes medieval British data)

₿ Bitcoin Price

  • Date Range: 2013 - Present
  • Update Frequency: Daily
  • Source: DailySatPrice
  • Coverage: Bitcoin spot price in USD

📊 Custom Tickers (Stocks, Crypto, ETFs)

  • Date Range: Last 2 Years Only (Free Tier Limitation)
  • Update Frequency: Daily
  • Source: Polygon.io API
  • Rate Limit: 5 API calls per minute (free tier)
  • Requirements: Free API key (setup via ⚙️ Settings button)
  • Coverage: Any US stock ticker, crypto pairs (BTC-USD), and ETFs
  • Why 2 years? This is a Polygon.io free tier restriction. Users provide their own free API keys, so we haven't implemented paid tier support. However, if you sponsor the project, we'll add paid account integration for full historical data!

💡 Tips for Using Custom Tickers