🗄️Developer Resource // JSON Endpoint

BIIB JSON Data API

Absolute endpoints (copy‑paste)
JSON:https://www.pocketportfolio.app/api/tickers/BIIB/json?range=max
CSV:https://www.pocketportfolio.app/api/tickers/BIIB/csv?range=max

Access 419 data points for BIIB spanning 35 years (1991–Jul 24, 2026). Optimized JSON format (61.4 KB).

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Download as CSV

Prefer CSV format? Download BIIB historical data as a CSV file for Excel, Google Sheets, or any spreadsheet application.

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

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{
  "symbol": "BIIB",
  "timestamp": "2026-07-24T21:39:35.341Z",
  "price": 202.19,
  "change_24h": 0.7825740205363338,
  "history_sample": [
    {
      "date": "1991-10-01",
      "open": 3.17,
      "high": 3.54,
      "low": 2.46,
      "close": 3.08,
      "volume": 14941800
    },
    {
      "date": "1991-11-01",
      "open": 3,
      "high": 3.13,
      "low": 1.83,
      "close": 2,
      "volume": 17532600
    }
  ]
}
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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 BIIB
🛡️

Need to archive this data?

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