Time horizons
Available on: Web · iOS · Android
A time horizon is the holding period behind a scan performance number. It answers: if you had bought each stock the day your scan found it, and sold it this long after, how would the scan have done? The metric says what is measured. The horizon says how long each trade is held.
So 1D Sharpe Ratio is the Sharpe ratio of buying every match and selling it one trading day later. Switch to 3M and the same scan's trades are each held for 63 trading days. Switch the metric to Win Rate and you see the share of those trades that ended with a gain.
Create and configure
On My Scans, then Performance, pick the horizon at the top right. It starts on 1 Day. A scan's details page has its own horizon picker.
The horizon applies to every card on the page, and the app remembers it on this device.
Reference
Each trade enters at the open on the day your scan matched the stock, and exits at the close on the horizon's last day. A trade whose exit day hasn't come yet is open, valued at the latest price.
A horizon counts trading days, not calendar days, so 1M is about a month of sessions, not a fixed date range.
A long horizon needs a long record. Until scanr has recorded enough of your scan's matches to cover the horizon, its returns and risk metrics stay blank and the card says "Not enough history yet". YTD never waits: it values every trade at the latest trading day.
Theme cards on the dashboard have their own periods (1D to 1Y), which look back from today rather than forward from a scan.
Tips
- Match the horizon to how you trade. Day and swing traders read 1D to 10D. Position traders read 1M to 6M.
- Read one scan across several horizons. A scan that is strong at 1D and weak at 3M finds short moves that fade. One that improves with time finds trends.
- Start with short horizons on a new scan. They fill with history first.