🗄️Developer Resource // JSON Endpoint
ESPR JSON Data API
Access 155 data points for ESPR spanning 13 years (2013–Apr 22, 2026). Optimized JSON format (22.7 KB).
Programmable Sovereign Interface — chart this JSON in the Terminal.
Local-first analysis. Stateless data. Your browser is the vault.
Download as CSV
Prefer CSV format? Download ESPR historical data as a CSV file for Excel, Google Sheets, or any spreadsheet application.
GET /api/tickers/ESPR/json● 200 OK (Live)Tired of exporting to Excel? Track ESPR and analyze your portfolio locally with Pocket Portfolio.
Start Free — Local First{
"symbol": "ESPR",
"timestamp": "2026-04-22T15:59:29.430Z",
"price": 1.99,
"change_24h": 3.645833333333337,
"history_sample": [
{
"date": "2013-07-01",
"open": 14.21,
"high": 18.95,
"low": 13.55,
"close": 17.84,
"volume": 1924000
},
{
"date": "2013-08-01",
"open": 18,
"high": 20.1,
"low": 16,
"close": 16.12,
"volume": 883300
}
]
}💻
Import via CLI
Don't scrape. Use our open-source importer to normalize this dataset directly into your local database.
npx pocket-portfolio --import ESPR🛡️
Need to archive this data?
Don't rely on ephemeral endpoints. Automatically sync ESPR.json updates to your private Google Drive for backtesting and compliance.
Enable Sovereign SyncIncludes unlimited API calls & historical CSV exports.
Dataset Specifications
- Format: Standardized JSON (OHLCV)
- Frequency: End-of-Day (EOD) + Real-time delay
- Adjustments: Split-adjusted, Dividend-adjusted
- Source: Multi-provider aggregation (AlphaVantage, Yahoo fallback)