Hedge PRD Update - AI, News, Charts

PRD Additions (2026-02-16)

1. AI Integration

Models by Use Case:

• News Sentiment: Claude Haiku / GPT-4o-mini (fast, cheap)
• Strategy Analysis: Claude Sonnet / GPT-4.1 (complex reasoning)
• Pattern Recognition: Custom ML (LSTM/Transformer) - NOT LLM
• Opportunity Spotting: Hybrid (ML signals + LLM explanation)
• Conversational Q&A: Claude Opus

Key Insight: LLMs hallucinate numbers. Use traditional ML for quantitative signals, LLMs for sentiment and explanation.

2. News Engine (Mini Bloomberg)

Alpaca Provides (via Benzinga):

• 250 articles + 900 headlines per day
• Real-time WebSocket: wss://stream.data.alpaca.markets/v1beta1/news
• Historical data back to 2015
• Stock and crypto coverage

Additional Sources to Build:

• X/Twitter API: Breaking news, real-time sentiment
• Reddit API: r/wallstreetbets, r/stocks
• StockTwits: Trader sentiment
• SEC EDGAR: 8-K, 10-Q filings
• Earnings call transcripts

Pipeline:
News Sources → Aggregator → AI Sentiment (Haiku) → Sentiment Score → Trading Signal

3. Charts

Library: TradingView Lightweight Charts

• Open source (Apache 2.0)
• Same tech as TradingView.com
• ~40kb bundle size
• Candlesticks, line, area charts

Technical Indicators:

• Moving Averages: SMA, EMA (20/50/200 day)
• Bollinger Bands
• RSI (Relative Strength Index)
• MACD
• Volume bars
• Support/Resistance lines
• Strategy signal overlays (buy/sell markers)

Alternative: Full TradingView embed widget (more features, less control)