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Preview of Stock Monitor

Stock Monitor by Cenk Tekin

Stock Monitor is the Firefox port of the KDE Plasma stock-monitor-widget. It tracks stocks, crypto and FX symbols using Yahoo Finance data, entirely in your browser and in the background.

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Screenshots
Popup — XU100.IS (BIST 100) single-symbol view: gradient chart, previous-close line, live price and a 3-character green badge; 1D/5D/1M…Max range buttons.Popup — XU100.IS over a one-month range: chart and badge turn red on a decline, updating live with the previous-close line.Settings › General — Single/Multi view, single ticker, data range, refresh interval, market hours, weekend and value formatting options.Settings › Search — search symbols via Yahoo Finance; set as single with SS or add to the multi-stock list with MSL.Settings › Panel — option to hide the stock change percentage from the panel.Settings › Portfolio — track profit/loss with shares + average cost; add/update/remove holdings and export CSV.Settings › Appearance — light/dark theme, positive/negative colours, background opacity; ticker and price text colour/opacitySettings › Backup — export/import all settings (tickers, colours, portfolio) as JSON; export the portfolio as CSV.
About this extension
Stock Monitor is the Firefox port of the KDE Plasma stock-monitor-widget. It tracks stocks, crypto and FX symbols using Yahoo Finance data, entirely in your browser and in the background.

HIGHLIGHTS
• Single / multi-stock — toggle between one symbol or a multi-stock list in the popup
• Live chart — gradient chart plus a previous-close line (1D, 5D, 1M, 6M, YTD, 1Y, 5Y, Max)
• Toolbar badge — up to 3-character change percentage (e.g. 2.5), green/red colouring, full value on hover
• Auto refresh — 1–360 min, with market-hours and weekend awareness and a battery saver
• Symbol search — search Yahoo Finance; add as single (SS) or to the list (MSL)
• Portfolio — shares + average cost profit/loss, CSV export
• Customisation — light/dark theme, colours, opacity, decimals and value formatting
• Backup — export/import all settings as JSON
• Clicks — left-click opens the Yahoo Finance page, middle-click refreshes

SYMBOLS
US: AAPL · TSLA · MSFT | Crypto: BTC-USD · ETH-USD | Index: ^GSPC · ^NSEI
FX: EURUSD=X · INR=X | BIST: THYAO.IS · GARAN.IS · XU100.IS

PRIVACY
No personal data is collected, stored or transmitted. Settings live only in the browser's local storage. The only network request


is to the Yahoo Finance API for price data.

OPEN SOURCE
Licensed GPL-3.0. Source: https://github.com/cenktekin/stock-monitor-ff
Original KDE widget: https://github.com/vpsone/stock-monitor-widget
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Permissions and data

Required permissions:

  • Display notifications to you

Optional permissions:

  • Access your data for query1.finance.yahoo.com
  • Access your data for query2.finance.yahoo.com

Data collection:

  • The developer says this extension doesn't require data collection.
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More information
Version
2.3.7
Size
152.02 KB
Last updated
18 days ago (Oct 5, 2026)
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