🗄️Developer Resource // JSON Endpoint

ATI JSON Data API

Access 318 data points for ATI spanning 27 years (1999–Apr 22, 2026). Optimized JSON format (46.6 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 ATI historical data as a CSV file for Excel, Google Sheets, or any spreadsheet application.

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

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

Start Free — Local First
{
  "symbol": "ATI",
  "timestamp": "2026-04-22T19:23:45.632Z",
  "price": 152.56,
  "change_24h": -4.020132117017922,
  "history_sample": [
    {
      "date": "1999-12-01",
      "open": 25.19,
      "high": 25.19,
      "low": 20.25,
      "close": 22.44,
      "volume": 11567000
    },
    {
      "date": "2000-01-01",
      "open": 22.31,
      "high": 23.75,
      "low": 20.75,
      "close": 20.88,
      "volume": 6972100
    }
  ]
}
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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 ATI
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Need to archive this data?

Don't rely on ephemeral endpoints. Automatically sync ATI.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