Finance & Fintech

Stock Portfolio Tracker

Build a portfolio tracking app with holdings, performance charts, and latest market news.

Build a stock portfolio tracker:

Portfolio management:
- Add holdings: ticker symbol, number of shares, purchase price, and purchase date
- Support for stocks, ETFs, and mutual funds
- Multiple portfolios (e.g., retirement, brokerage, fun money)
- Edit or close positions

Performance tracking:
- Current value vs. cost basis per holding
- Total portfolio value with gains/losses (absolute and percentage)
- Daily change indicators (up/down)
- Performance charts: 1D, 1W, 1M, 3M, 1Y, all-time
- Dividend tracking and yield

Portfolio analysis:
- Asset allocation breakdown (by sector, geography, asset type)
- Diversification score
- Top gainers and losers
- Portfolio vs. benchmark comparison (S&P 500)

News and alerts:
- Latest news for stocks in your portfolio
- Price alerts: notify when a stock hits a target price
- Earnings calendar for portfolio holdings

The app should have user authentication. All portfolio data is private per user.

Visual style:
- Color palette: dark mode (#111827) with green (#22C55E) for gains, red (#EF4444) for losses, and blue (#3B82F6) chart lines
- Dashboard layout with ticker cards, portfolio chart, and news feed sidebar
- Financial data typography — monospace for prices, sans-serif for labels
- Investment platform aesthetic — like Robinhood or Yahoo Finance, data-rich and real-time

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