🗄️Developer Resource // JSON Endpoint
CSPI JSON Data API
Absolute endpoints (copy‑paste)
JSON:
https://www.pocketportfolio.app/api/tickers/CSPI/json?range=maxCSV:
https://www.pocketportfolio.app/api/tickers/CSPI/csv?range=maxAccess 180 data points for CSPI spanning 45 years (1982–Jul 24, 2026). Optimized JSON format (26.4 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 CSPI historical data as a CSV file for Excel, Google Sheets, or any spreadsheet application.
GET /api/tickers/CSPI/json● 200 OK (Live)Tired of exporting to Excel? Track CSPI and analyze your portfolio locally with Pocket Portfolio.
Start Free — Local First{
"symbol": "CSPI",
"timestamp": "2026-07-24T21:39:51.226Z",
"price": 8.13,
"change_24h": 3.3036848792884452,
"history_sample": [
{
"date": "1982-01-01",
"open": 0,
"high": 3.29,
"low": 3.1,
"close": 3.1,
"volume": 224143
},
{
"date": "1982-04-01",
"open": 3.1,
"high": 3.94,
"low": 3.01,
"close": 3.47,
"volume": 624773
}
]
}💻
Import via CLI
Don't scrape. Use our open-source importer to normalize this dataset directly into your local database.
npx pocket-portfolio --import CSPI🛡️
Need to archive this data?
Don't rely on ephemeral endpoints. Automatically sync CSPI.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)