The tool
Pairs trading software for your own research.
Screen relationships, examine their history and follow the spread. PairScanner brings the calculations into one browser workspace.
From a shortlist to a pair you understand
Start with the scan table to compare pairs by their statistical relationship and current divergence. Open a pair to examine normalized paths, spread, Z-score and historical reversion. Add promising relationships to your watchlist and set a Z-score email alert.
The work stays in your browser. You do not need to install a desktop application or write Python to read the results. You remain responsible for choosing a model, deciding whether to trade and placing orders with your broker.
What the scanner gives you
Screening. US-listed stocks and ETFs, with separate forex and cryptocurrency groups and a fixed cross-asset selection. Coverage depends on available history and liquidity filters; it is not a list of every instrument worldwide.
Statistical evidence. Return correlation, Engle–Granger cointegration, multiple-testing adjustment, hedge coefficient, half-life and out-of-sample checks. Inspect several measures together instead of interpreting one green result as certainty.
Follow-up. Watchlists and email alerts on a chosen Z-score threshold. Alerts are sent once per arming. For stocks, SEC filings and news activity provide context when available.
Know which time you are looking at
The full scan is recalculated after the US market close. During a session, supported pairs also show an intraday Z-score refreshed approximately every 30 seconds from quotes delayed by about 15 minutes. A refresh interval is not a guarantee of real-time market data.
Pairs across different exchanges use closing-data Z-scores. Check the timestamp, market and available history on each pair before comparing values.
See a complete analysis before signing up
The public KMI/WMB study walks through charts, a hedge coefficient, a chronological test and issuer context. Its final Z-score was −2.38 using the September 9, 2026 close, archived on September 10. This is a frozen research example, not a live opportunity.
Discover pairs beyond the names you know
You do not need to know which companies to pair. PairScanner’s algorithm finds candidates within its supported universe and performs the statistical calculations automatically. Open the scanner: the pair analyses are already there.
| What you get | Professional software | Other retail software | PairScannerReady-to-use pair analysis |
|---|---|---|---|
| Access | SubscriptionLicence and data costs depend on the offer | Free + paidFeatures depend on the plan | $0Sign up with just your email |
| Finding pairs | Market screening and quantitative research tools. | Screeners, charts and indicators, depending on the software. | Pairs discovered automatically. Including companies you have never searched for. |
| Calculations | Advanced analytics and customizable models. | Built-in indicators and analysis tools; pair features vary. | The algorithm does the calculations automatically: cointegration, hedge ratio, spread and Z-score. |
| Historical depth | Historical datasets, with coverage depending on the licence. | History varies by market, data provider and plan. | Five years of daily data for pair analysis, subject to available common history. |
| Getting results | Research workflows and automation options. | Scans, scripts and alerts, depending on the software. | Results calculated daily. No code to write, no pair to enter manually. |
| Your workflow | Broad market research and analysis tools. | Charting, technical analysis or specialized tools. | Pair scanner, analysis and monitoring in one place. Watchlists and Z-score email alerts included. |
PairScanner: no card required. Creating a free account does not start a paid subscription or authorize automatic charges.
General overview: features vary by software and plan. PairScanner is an analysis tool; orders stay with your broker.
Research, execution and backtesting
PairScanner provides analytics, watchlists and alerts. It does not connect to your broker to execute orders. Its historical reversion statistics and out-of-sample checks are not a configurable portfolio backtester reporting net performance after trading costs.
If you need automated order execution, broker position reconciliation or a migration of PTL portfolios, assess those requirements separately. Read the Pair Trading Lab comparison.
Free access
PairScanner is currently free. Sign up with just your email; no card is required. Creating a free account does not start a paid subscription or authorize automatic charges. Create your free account.
New to the strategy? Start with What is pair trading? and a public example.
Educational content. Historical relationships can break. Trading and short selling involve a risk of loss.
Open PairScanner