Access 150+ Years of Market Data
Free REST API providing Robert Shiller's Nobel Prize-winning research data including the S&P 500, CAPE ratio, earnings, dividends, and U.S. home prices.
API Endpoints
All endpoints return JSON data. No authentication required.
Latest Values
Get the most recent data points for quick access
GET /data/latest.json
View Response
{
"stock_market": {
"date": "2025-12-01",
"sp500": 6812.63,
"cape": 39.41935320301406,
"dividend_yield": 1.34,
"earnings": 197.45,
"cpi": 310.33
},
"home_prices": {
"date": "2024-01-01",
"real_home_price_index": 206.85,
"building_cost_index": 140.21
}
}Stock Market Data (Full History)
Complete S&P 500 data including prices, earnings, dividends, and CAPE ratio since 1871
GET /data/stock_market_data.json
View Fields
- date_string: Date in YYYY-MM-DD format
- sp500: S&P 500 Composite Index
- dividend: Dividends per share
- earnings: Earnings per share
- cpi: Consumer Price Index
- cape: Cyclically Adjusted PE Ratio (Shiller PE)
- real_price: Inflation-adjusted S&P 500 price
- real_dividend: Inflation-adjusted dividends
- real_earnings: Inflation-adjusted earnings
- long_interest_rate: 10-Year Treasury Rate
Home Price Data
U.S. real home price index and related data since 1890
GET /data/home_price_data.json
View Fields
- date_string: Date in YYYY-MM-DD format
- real_home_price_index: Inflation-adjusted home price index
- building_cost_index: Construction cost index
- us_population_millions: U.S. population in millions
- long_rate: Long-term interest rate
Usage Examples
JavaScript / Fetch
fetch('https://yourusername.github.io/shiller_wrapper_data/data/latest.json')
.then(response => response.json())
.then(data => {
console.log('Current CAPE Ratio:', data.stock_market.cape);
console.log('S&P 500:', data.stock_market.sp500);
});Python
import requests
response = requests.get('https://yourusername.github.io/shiller_wrapper_data/data/stock_market_data.json')
data = response.json()
# Get the latest CAPE ratio
latest = data['data'][-1]
print(f"CAPE Ratio: {latest['cape']}")
print(f"S&P 500: {latest['sp500']}")curl
curl https://yourusername.github.io/shiller_wrapper_data/data/latest.jsonAbout the Data
This API provides free access to data compiled by Robert J. Shiller, Sterling Professor of Economics at Yale University and Nobel Laureate in Economics (2013).
Data Sources
- Stock Market Data: Monthly S&P 500 data since 1871, including the famous CAPE (Cyclically Adjusted PE) ratio used for market valuation
- Home Price Data: U.S. real estate prices since 1890, forming the basis of the Case-Shiller Home Price Index
Update Frequency
Data is automatically updated weekly from Professor Shiller's official sources at Yale University.
Academic Use
This data is widely used in academic research and has been featured in Shiller's book "Irrational Exuberance" and numerous economic studies.