🗄️Developer Resource // JSON Endpoint
ERSX JSON Data API
Access 272 data points for ERSX spanning 6 years (2018–Mar 4, 2024). Optimized JSON format (39.8 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 ERSX historical data as a CSV file for Excel, Google Sheets, or any spreadsheet application.
GET /api/tickers/ERSX/json● 200 OK (Live)Tired of exporting to Excel? Track ERSX and analyze your portfolio locally with Pocket Portfolio.
Start Free — Local First{
"symbol": "ERSX",
"timestamp": "2026-04-22T20:51:22.471Z",
"price": 11.27,
"change_24h": -0.35543138052377904,
"history_sample": [
{
"date": "2018-12-24",
"open": 15.18,
"high": 15.18,
"low": 15.11,
"close": 15.18,
"volume": 100395
},
{
"date": "2018-12-31",
"open": 15.26,
"high": 15.62,
"low": 15.15,
"close": 15.62,
"volume": 17728
}
]
}💻
Import via CLI
Don't scrape. Use our open-source importer to normalize this dataset directly into your local database.
npx pocket-portfolio --import ERSX🛡️
Need to archive this data?
Don't rely on ephemeral endpoints. Automatically sync ERSX.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)