🗄️Developer Resource // JSON Endpoint
EFOI JSON Data API
Access 381 data points for EFOI spanning 32 years (1994–Apr 22, 2026). Optimized JSON format (55.8 KB).
Route this JSON into your sovereign workspace — command the Terminal.
Endpoint-first sovereignty: no shared warehouse of your raw ledger.
Download as CSV
Prefer CSV format? Download EFOI historical data as a CSV file for Excel, Google Sheets, or any spreadsheet application.
GET /api/tickers/EFOI/json● 200 OK (Live)Tired of exporting to Excel? Track EFOI and analyze your portfolio locally with Pocket Portfolio.
Start Free — Local First{
"symbol": "EFOI",
"timestamp": "2026-04-22T20:49:35.411Z",
"price": 4.51,
"change_24h": -0.4415011037527695,
"history_sample": [
{
"date": "1994-09-01",
"open": 1918.14,
"high": 2489.51,
"low": 1714.09,
"close": 2326.26,
"volume": 1037
},
{
"date": "1994-10-01",
"open": 2326.26,
"high": 2326.26,
"low": 1877.33,
"close": 1877.33,
"volume": 488
}
]
}💻
Import via CLI
Don't scrape. Use our open-source importer to normalize this dataset directly into your local database.
npx pocket-portfolio --import EFOI🛡️
Need to archive this data?
Don't rely on ephemeral endpoints. Automatically sync EFOI.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)