🗄️Developer Resource // JSON Endpoint
CLST JSON Data API
Access 239 data points for CLST spanning 5 years (2021–May 1, 2026). Optimized JSON format (35.0 KB).
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Download as CSV
Prefer CSV format? Download CLST historical data as a CSV file for Excel, Google Sheets, or any spreadsheet application.
GET /api/tickers/CLST/json● 200 OK (Live)Tired of exporting to Excel? Track CLST and analyze your portfolio locally with Pocket Portfolio.
Start Free — Local First{
"symbol": "CLST",
"timestamp": "2026-05-02T16:36:34.698Z",
"price": 15.95,
"change_24h": -0.0626566416040198,
"history_sample": [
{
"date": "2021-10-11",
"open": 13.33,
"high": 13.89,
"low": 13.31,
"close": 13.89,
"volume": 1690300
},
{
"date": "2021-10-18",
"open": 13.89,
"high": 13.95,
"low": 13.63,
"close": 13.7,
"volume": 344200
}
]
}💻
Import via CLI
Don't scrape. Use our open-source importer to normalize this dataset directly into your local database.
npx pocket-portfolio --import CLST🛡️
Need to archive this data?
Don't rely on ephemeral endpoints. Automatically sync CLST.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)