Tracking investment performance typically means opening a brokerage app or financial website. Both involve authentication (or at least navigation through a homepage) and ads before reaching the numbers that matter.
For a daily portfolio check, this is 30-60 seconds of overhead for 10 seconds of information.
Browser-native portfolio tracking
Stock Market and Finance Dashboard for Firefox puts your watchlist on a new tab. Configure once — stocks, ETFs, indices — and every new tab shows current prices and day changes.
What you see:
- Current price for each symbol
- Day change (absolute and percentage)
- Color coding: green for positive, red for negative
What is not there:
- Position sizing (the extension does not know your shares)
- P&L calculations
- Charts
- News
This is a ticker, not a portfolio management tool. The difference: a ticker shows what the market is doing; a portfolio management tool tracks your specific positions.
For a morning check on market status, the ticker is the right level of detail.
Stock Market and Finance Dashboard — Firefox Add-ons
Setup
- Install the extension
- Click the new tab page
- Enter your symbols in the input field: AAPL, MSFT, VOO, ^GSPC, whatever you watch
- The dashboard saves your symbols locally
The symbols are stored in Firefox's extension storage — not synced to any server.
Supported symbol types
The extension uses a public market data API that covers:
- US stocks (AAPL, TSLA, NVDA, etc.)
- ETFs (VOO, QQQ, SPY, etc.)
- Indices (^GSPC for S&P 500, ^DJI for Dow, ^IXIC for Nasdaq)
Coverage for international stocks varies by the data provider's coverage.
Stock Market Dashboard is one of 11 Firefox extensions I built — see the full series.
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