🗄️Developer Resource // JSON Endpoint
COPJ JSON Data API
Access 170 data points for COPJ spanning 4 years (2023–Apr 22, 2026). Optimized JSON format (24.9 KB).
Local-first charts from this JSON — open the Terminal.
Parse and visualize without shipping raw ledgers to a vendor database.
Download as CSV
Prefer CSV format? Download COPJ historical data as a CSV file for Excel, Google Sheets, or any spreadsheet application.
GET /api/tickers/COPJ/json● 200 OK (Live)Tired of exporting to Excel? Track COPJ and analyze your portfolio locally with Pocket Portfolio.
Start Free — Local First{
"symbol": "COPJ",
"timestamp": "2026-04-22T20:51:58.762Z",
"price": 43.79,
"change_24h": 4.823459006582886,
"history_sample": [
{
"date": "2023-01-30",
"open": 20.2,
"high": 20.38,
"low": 19.5,
"close": 19.5,
"volume": 20600
},
{
"date": "2023-02-06",
"open": 20.45,
"high": 20.45,
"low": 18.74,
"close": 18.86,
"volume": 53700
}
]
}💻
Import via CLI
Don't scrape. Use our open-source importer to normalize this dataset directly into your local database.
npx pocket-portfolio --import COPJ🛡️
Need to archive this data?
Don't rely on ephemeral endpoints. Automatically sync COPJ.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)