🗄️Developer Resource // JSON Endpoint
CMSC JSON Data API
Access 396 data points for CMSC spanning 8 years (2018–Apr 22, 2026). Optimized JSON format (58.0 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 CMSC historical data as a CSV file for Excel, Google Sheets, or any spreadsheet application.
GET /api/tickers/CMSC/json● 200 OK (Live)Tired of exporting to Excel? Track CMSC and analyze your portfolio locally with Pocket Portfolio.
Start Free — Local First{
"symbol": "CMSC",
"timestamp": "2026-04-22T19:18:21.136Z",
"price": 22.849,
"change_24h": 0.834068843777582,
"history_sample": [
{
"date": "2018-10-01",
"open": 24.94,
"high": 25,
"low": 24.25,
"close": 24.72,
"volume": 323400
},
{
"date": "2018-10-08",
"open": 24.98,
"high": 24.98,
"low": 24.66,
"close": 24.91,
"volume": 102100
}
]
}💻
Import via CLI
Don't scrape. Use our open-source importer to normalize this dataset directly into your local database.
npx pocket-portfolio --import CMSC🛡️
Need to archive this data?
Don't rely on ephemeral endpoints. Automatically sync CMSC.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)