Buy the stocks at the top ranks of a screen, and keep them until they are
no longer on the screen, or ranked too low.
Run the tester over the specified range of years. Available data
runs from 2003 through 2017 for most screens. You may
start at any month of the year, but other than January can only run
Stocks are picked from the screens every holding period (between
1 and 120 months) and held for that period.
If you want to simulate actual trading, you can enter more parameters
in the trading simulator.
You may give your backtest a name for convenience. If you use
this backtest code in other testers, its name will be shown instead of
a full description.
Select the screen to choose from, and which ranks to buy
on that screen. Specify to sell when a stock falls below
a rank. Whenever a stock falls too low, it will be replaced with
the highest-ranked stock (among those ranks chosen) not already held.
You may also select a transition screen. In that case, stocks
that drop off the main screen are retained until they also drop off
the transition screen, or fall below a rank on it. New stocks are
never picked from the transition screen, only from the main screen.