🗄️Developer Resource // JSON Endpoint
CPSS JSON Data API
Access 403 data points for CPSS spanning 34 years (1992–Apr 22, 2026). Optimized JSON format (59.0 KB).
Private ledger analysis — connect this API slice to the Terminal.
Keep sensitive rows off shared analyst lakes — bounded, explicit flows.
Download as CSV
Prefer CSV format? Download CPSS historical data as a CSV file for Excel, Google Sheets, or any spreadsheet application.
GET /api/tickers/CPSS/json● 200 OK (Live)Tired of exporting to Excel? Track CPSS and analyze your portfolio locally with Pocket Portfolio.
Start Free — Local First{
"symbol": "CPSS",
"timestamp": "2026-04-22T20:51:48.311Z",
"price": 8.65,
"change_24h": 1.0514018691588767,
"history_sample": [
{
"date": "1992-11-01",
"open": 2.56,
"high": 2.69,
"low": 2.38,
"close": 2.5,
"volume": 501400
},
{
"date": "1992-12-01",
"open": 2.5,
"high": 3.31,
"low": 2.44,
"close": 3.31,
"volume": 609600
}
]
}💻
Import via CLI
Don't scrape. Use our open-source importer to normalize this dataset directly into your local database.
npx pocket-portfolio --import CPSS🛡️
Need to archive this data?
Don't rely on ephemeral endpoints. Automatically sync CPSS.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)