🗄️Developer Resource // JSON Endpoint

WM JSON Data API

Access 153 data points for WM spanning 38 years (1988–Apr 22, 2026). Optimized JSON format (22.4 KB).

Programmable Sovereign Interface — chart this JSON in the Terminal.
Local-first analysis. Stateless data. Your browser is the vault.

Download as CSV

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

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

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

Start Free — Local First
{
  "symbol": "WM",
  "timestamp": "2026-04-22T19:19:37.194Z",
  "price": 224.84,
  "change_24h": 0.6355742547668141,
  "history_sample": [
    {
      "date": "1988-06-01",
      "open": 4.75,
      "high": 4.88,
      "low": 2.63,
      "close": 2.75,
      "volume": 622000
    },
    {
      "date": "1988-09-01",
      "open": 2.75,
      "high": 3.38,
      "low": 2.25,
      "close": 2.63,
      "volume": 1312600
    }
  ]
}
💻

Import via CLI

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

npx pocket-portfolio --import WM
🛡️

Need to archive this data?

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