🗄️Developer Resource // JSON Endpoint

CII JSON Data API

Access 264 data points for CII spanning 22 years (2004–Apr 22, 2026). Optimized JSON format (38.7 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 CII historical data as a CSV file for Excel, Google Sheets, or any spreadsheet application.

GET /api/tickers/CII/json● 200 OK (Live)

Tired of exporting to Excel? Track CII and analyze your portfolio locally with Pocket Portfolio.

Start Free — Local First
{
  "symbol": "CII",
  "timestamp": "2026-04-22T20:38:31.910Z",
  "price": 23.58,
  "change_24h": 0.5543710021321919,
  "history_sample": [
    {
      "date": "2004-06-01",
      "open": 20,
      "high": 20.01,
      "low": 17.3,
      "close": 17.5,
      "volume": 795700
    },
    {
      "date": "2004-07-01",
      "open": 17.51,
      "high": 18.45,
      "low": 16.34,
      "close": 16.81,
      "volume": 573800
    }
  ]
}
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Import via CLI

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

npx pocket-portfolio --import CII
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Need to archive this data?

Don't rely on ephemeral endpoints. Automatically sync CII.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)
> system_ready. Initialize Sovereign reasoning for this asset?[Y]— open Terminal