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🗄️Developer Resource // JSON Endpoint

GRTX JSON Data API

Access 326 data points for GRTX spanning 7 years (2019–Jan 21, 2026). Optimized JSON format (47.8 KB).

GET /api/tickers/GRTX/json● 200 OK (Live)
{
  "symbol": "GRTX",
  "timestamp": "2026-01-22T05:44:14.074Z",
  "price": 0.024,
  "change_24h": -4.0000000000000036,
  "history_sample": [
    {
      "date": "2019-11-04",
      "open": 12.5,
      "high": 13.43,
      "low": 11.5,
      "close": 12,
      "volume": 1736700
    },
    {
      "date": "2019-11-11",
      "open": 11.85,
      "high": 14.49,
      "low": 11.67,
      "close": 11.79,
      "volume": 675800
    }
  ]
}
💻

Import via CLI

Don't scrape. Use our open-source importer to normalize this dataset directly into your local database.

npx pocket-portfolio --import GRTX
🛡️

Need to archive this data?

Don't rely on ephemeral endpoints. Automatically sync GRTX.json updates to your private Google Drive for backtesting and compliance.

Enable Sovereign Sync

Includes 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)