Free Stock Portfolio Tracker for US & European Markets
Keep your portfolio — and the market — in view.
Track stocks across US and European markets, screen for quality across 12 exchanges, build with model portfolios, gauge whether the market is expensive, and monitor your returns in any currency — all in one private, secure app.
st-ox.com
Invested
€14,820
8 lots
Current Value
€17,340
current prices
Total Return
+€2,520
+17.0%
Daily Change
−€84
−0.48%
Holdings
Ticker
Shares
Value
Return
Status
AAPL
Apple Inc.
10
€2,840
+12.4%
Live
MSFT
Microsoft Corp.
5
€2,190
+8.7%
Live
IBCH.DE
iShares MSCI World EUR Hedged
20
€4,620
+22.1%
Live
Portfolio tracking, stock screening and rebalancing in one app
Everything you need, nothing you don't — built for self-directed investors who want clarity without complexity.
New
Smart Screen
Find stocks across 12 markets — US, Europe, Tokyo, Hong Kong — ranked 0–100 on quality, growth, value and momentum — or by Joel Greenblatt's Magic Formula. Five presets, from Quality Compounder to Microcap Survivors, plus opt-in day-trading scans (high risk).
Multi-market quotes
US, European, and global stocks. Prices fetched from Yahoo Finance with automatic currency conversion.
Multi-currency portfolio
Buy in USD, EUR, GBP — view everything in your chosen display currency. FX rates updated daily.
Technical analysis
RSI, RVI, Relative Volatility, OBV, HV, 200-day MA, 52-week range — 7 signals summarised into a single actionable verdict.
Trailing stop monitor
Trailing stop (15% by default, adjustable) measured from the highest close since your buy date. The row turns red when a position falls below it.
Rebalancing tool
Set target allocations and instantly see how much to buy or sell to bring your portfolio back into balance.
New
Model portfolios & What-if
Seven ready-made allocations — All-Weather, Permanent, Income and more. Load one into Rebalance, or use the What-if tab to project a lump sum or monthly plan into pessimistic / expected / optimistic outcomes.
New
Market valuation
See whether the market is expensive vs. its own history — price-vs-trend across the US, Europe and Japan, plus the Buffett Indicator and Tobin's Q for the US, rolled into one verdict.
Private and secure
Your data is stored securely in your account. No ads, no third-party login, no selling of your data — just you and your portfolio.
Portfolio tracker FAQ
Everything you need to know before you start.
Yes, completely free. No credit card required, no ads, no hidden fees. Create an account and start tracking immediately.
st-ox uses Yahoo Finance ticker format and supports all major exchanges: US (Nasdaq, NYSE), Germany (Xetra, Frankfurt and the regional exchanges), UK (London), France (Paris), the Netherlands (Amsterdam), Italy (Milan), Spain (Madrid), Switzerland (SIX), the Nordics (Stockholm, Copenhagen, Oslo, Helsinki), the Baltics (Tallinn, Riga, Vilnius), Canada, Australia, Tokyo, Hong Kong and more.
Quotes come from Yahoo Finance; on many exchanges they are delayed by about 15 minutes. Prices refresh when you open the app, when you return to its tab and when you press Refresh. A quote older than your chosen freshness window (5 minutes to 6 hours) is marked stale.
Smart Screen is a built-in stock screener that finds companies across 12 markets — the US, London, Paris, Frankfurt, Amsterdam, Milan, Switzerland, Stockholm, Copenhagen, Helsinki, Tokyo, and Hong Kong. Each stock must pass a set of hard gates. Most presets then rank the survivors 0–100 on four weighted factors, with no more than four per sector so one industry can't dominate; the Magic Formula preset instead follows Joel Greenblatt's book, ranking every company on return on capital and on earnings yield and adding the two ranks. Five presets — Quality Compounder, Emerging Growth, Capital Preservation (defensive, low-volatility dividend payers), Microcap Survivors (the penny/microcap end, filtered for companies that can fund themselves) and Magic Formula (Joel Greenblatt's rank on return on capital plus earnings yield) — let you choose the style, and there are opt-in day-trading scans (high risk) too. It's an idea generator, not investment advice.
Yes. The Magic Formula preset in Smart Screen follows Joel Greenblatt's The Little Book That Beats the Market: every company above the market-cap floor, excluding financials and utilities, is ranked on return on capital (operating profit ÷ net working capital plus net fixed assets) and on earnings yield (operating profit ÷ enterprise value), and the 30 with the lowest combined rank are shown. It runs on all 12 markets. Unlike the other presets it has no uptrend filter and no sector limit, because the formula deliberately buys good businesses the market has marked down. Greenblatt warned that it can trail the market for one to three years at a time, so it suits investors prepared to stick with it. The Magic Formula guide explains the method and its caveats in full.
The Models page offers seven ready-made example allocations — Wealth Preservation, Growth, Ivy Portfolio, All-Weather, Income, Permanent Portfolio and EUR-Hedged Global — that you can load straight into the Rebalance tool. An EU / US investor toggle switches the models between euro-listed UCITS and the equivalent US-listed ETFs, so you can build the same strategy with whichever instruments you can buy (the Ivy Portfolio keeps its original US ETFs). The What-if tab projects a lump sum (and optional monthly contributions) over a chosen horizon, showing pessimistic / expected / optimistic outcomes for each model with an inflation-adjustable view. These are hypothetical illustrations, not forecasts or advice.
The Valuation page shows long-horizon gauges of whether the market is expensive versus its own history: a price-vs-trend chart you can switch between the US, Europe, Germany, France, the UK and Japan, plus the US Buffett Indicator (market cap to GDP) and Tobin's Q ratio. Each is shown with standard-deviation bands; for the US all three roll into one verdict, for other regions the price-vs-trend gauge stands alone. They're useful for setting long-run return expectations, not for market timing.
Yes. Each lot stores its own cost currency — you can hold USD stocks, EUR ETFs, and GBP shares all in the same portfolio. Daily exchange rates (ECB reference rates) convert everything into your chosen display currency automatically.
Yes. Dividends paid since your buy date are fetched automatically from Yahoo Finance, shown per position in the holdings table, and folded into your Total Return (with the capital-only and dividend portions broken out in the card's sub-text). Amounts are gross, before any withholding tax.
The ticker detail chart computes RSI (14), RVI (10), Relative Volatility (14), OBV, Historical Volatility, 200-day moving average, and 52-week range position — combined into a single Buy / Hold / Caution signal for buying after a dip. The signal follows fixed rules; it is not investment advice.
Your portfolio data is stored in a private cloud database tied to your account. Passwords are hashed with PBKDF2 (100,000 iterations). No third-party login, no ads, and your data is never sold or shared for marketing. Visits are counted with Cloudflare Web Analytics, which sets no cookies and doesn't follow you across other sites — details are in the Privacy Policy.
Yes. st-ox is fully responsive and works in any modern mobile browser — no app download required.
For each position, st-ox tracks the highest close since your buy date and alerts you (red left border on the row) if the current price drops more than your trailing-stop percentage below it (15% by default, adjustable from 1% to 50% in Settings) — a classic risk management signal.
Yes. You can import holdings from a CSV file in the format: ticker, shares, avgPrice, buyDate, currency. A missing price is filled in from Yahoo Finance's close on the buy date (or today's price for a lot with no date).
Start tracking your portfolio for free
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