This stocks portfolio tracker saves your portfolio on your browser. If you delete cache it disappears. To delete any item scrow to the right and you will find a box with a red X in it. Click on it and the stock is deleted.
Add Position
Holdings
| Symbol | Price | Change | Shares | Avg Cost | Market Value | P&L | |
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| No positions yet. Add a stock above. | |||||||
Free Stock Portfolio Tracker — Track Your Investments in Real Time, No Sign-Up Required
If you’re looking for a free stock portfolio tracker that gives you instant access to live market data without the hassle of creating an account, downloading software, or paying a monthly subscription, the Market Investigation Portfolio Tracker is exactly what you need. Designed for self-directed investors, day traders, swing traders, and long-term stock market enthusiasts, this browser-based portfolio management tool makes it effortless to monitor your holdings, track your gains and losses, and stay on top of your investment performance — all from a single, clean interface.
What Is the Market Investigation Portfolio Tracker?
The Market Investigation Portfolio Tracker is a free, browser-based stock tracking tool that allows you to build and monitor a personalised watchlist of equity positions in real time. Whether you hold shares in US-listed stocks, track a paper trading portfolio, or want a fast and simple way to monitor your current investment positions, this tool delivers live price data, profit and loss calculations, and total portfolio value at a glance.
Unlike traditional portfolio management apps that require logins, email verification, or expensive premium plans, this tracker works entirely within your web browser. Your portfolio data is saved locally using your browser’s cache, meaning there’s no server, no database, and no third party storing your financial information. It’s completely private, completely free, and completely instant to set up.
Key Features of the Stock Portfolio Tracker
Live Market Data — The tracker pulls real-time stock price data so your portfolio value is always up to date. As prices move throughout the trading session, your total portfolio value, individual position values, and overall gain or loss figures update automatically.
Total Portfolio Value — At the top of the dashboard, you’ll see your aggregated portfolio value displayed clearly, giving you an instant snapshot of what your investments are worth right now.
Total Gain / Loss — The tracker calculates your total profit or loss across all positions in your portfolio, based on the difference between your average cost per share and the current market price.
Return Percentage — Alongside the absolute gain or loss figure, the tool displays your overall return as a percentage, helping you benchmark your performance quickly.
Individual Holdings Table — Each stock position is displayed in a clean table showing the ticker symbol, current price, price change, number of shares held, average cost per share, current market value, and profit and loss per position. This gives you full visibility across every holding in your investment portfolio.
Add New Positions — Adding a new stock to your tracker is simple. Enter the ticker symbol and the number of shares you hold, along with your average purchase price, and the tool does the rest.
Delete Positions — To remove a stock from your tracker, scroll to the right on that row and you will see a button with a red X. Click it to delete the position instantly.
How to Use the Stock Portfolio Tracker
Getting started with the Market Investigation Portfolio Tracker takes less than a minute. Here’s a step-by-step guide:
Step 1 — Visit the Tool Navigate to marketinvestigation.com/portfolio-tracker. The tool loads instantly in your browser with no installation, no registration, and no API key required for this particular feature.
Step 2 — Add Your First Stock Position In the “Add Position” section, type the ticker symbol of the stock you want to track (for example, AAPL for Apple, TSLA for Tesla, or NVDA for Nvidia). Enter the number of shares you hold and your average cost per share, then click the “+ Add” button.
Step 3 — View Your Live Portfolio Your position will appear immediately in the Holdings table. The tracker will fetch the current live price and calculate your market value, gain or loss, and return percentage automatically.
Step 4 — Add More Positions Repeat the process for each stock in your portfolio. There is no limit to the number of positions you can track.
Step 5 — Monitor Your Returns The dashboard at the top of the page will update in real time to reflect your total portfolio value, total gain or loss in dollars, and your overall percentage return across all holdings.
Step 6 — Delete Positions When Needed If you sell a stock or want to remove it from your tracker, scroll right on that row to find the red X delete button and click it.
Important Note on Data Storage: Because your portfolio is saved in your browser’s local cache, it will persist between visits as long as you do not clear your browser cache or cookies. If you clear your cache, your portfolio data will be lost and you will need to re-enter your positions. For this reason, it’s a good idea to keep a simple record of your holdings externally as a backup.
Where to Get the Anthropic API Key (For Other Market Investigation Tools)
While the Portfolio Tracker itself does not require an API key, several other powerful tools on Market Investigation — including the AI Stock Analyser, the Stock News Sentiment Analysis tool, the Buffett Screen, and the LEAPS Options Screener — are powered by Claude AI from Anthropic and require an Anthropic API key to function.
Getting your Anthropic API key is straightforward:
- Go to console.anthropic.com
- Create a free Anthropic account or log in if you already have one
- Navigate to the API Keys section in your dashboard
- Click Create Key, give it a name, and copy the key to your clipboard
- Paste the key into the relevant Market Investigation tool when prompted
Anthropic offers a free tier with usage credits to get you started, making it accessible for individual investors who want to leverage the power of large language model AI for stock research, fundamental analysis, and news sentiment scoring without committing to a paid plan upfront.
Why Use the Market Investigation Portfolio Tracker?
For investors who want a simple, private, no-nonsense stock portfolio tracker without the bloat of complex financial platforms, this tool hits the sweet spot. It’s ideal for beginners learning to track their first investments, experienced traders who want a fast secondary dashboard, and anyone who values privacy since your data never leaves your browser.
Pair the portfolio tracker with the site’s AI-powered fundamental analysis tool, value investing screener, and stock news sentiment analyser to build a complete, data-driven research and monitoring workflow — all in one place, all built for the self-directed investor.