Real-Time US Stock Screener

I need a full-featured website—think FastGraphs, only focused on every publicly traded company in the United States—that delivers real-time insight the moment a ticker is entered. Live feeds must pull from both NASDAQ and NYSE so price, volume, and any intraday movement appear instantly without a manual refresh.

The core of the site is detailed stock analysis, not just basic filters. When a user clicks on a symbol, I want them to see:

• Technical indicators rendered on interactive charts
• Multi-period historical performance overlays
• Downloadable financial statements with line-item drill-downs
• Key valuation ratios such as P/E and forward P/E, plus EBITA and similar metrics

Anything commonly reviewed by professional investors—dividend history, insider transactions, short interest, you name it—should be available or architected so we can add it quickly.

I am open to the stack, but whatever you choose must integrate reliably with real-time market data APIs, handle hundreds of concurrent users without lag, and present charts that are crisp on desktop and mobile. Please outline:

• The data provider(s) you recommend for both exchanges
• Your preferred framework for high-frequency chart rendering
• A timeline with milestones from prototype to launch

Production-ready, well-documented code and a staging URL will be the final deliverables.