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Quantum Trader

Data Collection

Data Providers

Section titled “Data Providers”

Quantum Trader supports multiple data providers for redundancy and coverage.

Polygon.io (Primary)

Section titled “Polygon.io (Primary)”

Features:

  • Real-time and historical data
  • 2+ years of minute data on free tier
  • Reliable and fast

Rate Limits:

  • Free: 5 calls/minute
  • Starter: 100 calls/minute

Setup:

Terminal window
POLYGON_API_KEY=your_key_here

Alpha Vantage (Backup)

Section titled “Alpha Vantage (Backup)”

Features:

  • 20+ years of daily data
  • Fundamental data available
  • Good for historical backfills

Rate Limits:

  • Free: 25 calls/day
  • Premium: 75 calls/minute

Setup:

Terminal window
ALPHA_VANTAGE_API_KEY=your_key_here

yfinance (Fallback)

Section titled “yfinance (Fallback)”

Features:

  • No API key required
  • Good for quick tests
  • May be rate-limited

Collection Strategies

Section titled “Collection Strategies”

Manual Collection

Section titled “Manual Collection”

Trigger data collection on-demand:

  1. Go to Tickers
  2. Click Collect on a ticker
  3. Select interval and date range

Scheduled Collection

Section titled “Scheduled Collection”

Set up automatic data collection:

  • Daily data: After market close (4:30 PM ET)
  • Intraday: Every 15 minutes during market hours

Bulk Collection

Section titled “Bulk Collection”

For initial setup or backfills:

  1. Go to Tickers > Bulk Collect
  2. Select tickers
  3. Choose intervals
  4. Start collection

Rate Limit Management

Section titled “Rate Limit Management”

The system automatically manages rate limits:

  • Queues requests when limit reached
  • Rotates between providers
  • Retries failed requests

Host-Based Collectors

Section titled “Host-Based Collectors”

For advanced users, run collectors outside Docker:

from quantum_trader import DataCollector


collector = DataCollector(api_url="http://localhost:8501")
collector.collect("AAPL", interval="1d", start="2020-01-01")

Next Steps

Section titled “Next Steps”