ETF disallow repurchase

when weekly backtesting an ETF SCREEN or Rolling Backtest ( various weeks )
is it possible to
NOT allow a sold ETF holding to be re-bought at current rebalance (next test period )
as in Port Simulation ?

a rule placed in body of rules to not allow an ETF to be selected in a consecutive test period ?

thanks…

N,

On the General tab, near the bottom, Set “Allow sold holdings to be re-bought at current rebalance” to No.
Alternately, you can add the buy rule; LastSellDays>30,or any number of days you wish.

Denny :sunglasses:

Error near ‘LastSellDays’: Invalid command LastSellDays>30

also, using SCREENER…

no option for
Set “Allow sold holdings to be re-bought at current rebalance”
no general tab.

The correct formula is:

LastSellDaysLT(30)=FALSE

Steve

LastSellDaysLT(30)=FALSE

get Error near ‘LastSellDaysLT’: Invalid command ‘LastSellDaysLT’

Formula not accepted in screener

unable…

N.

This rule can only be used in sims/ports. I guess Denny and I did not read your original post completely…
Steve

N,

The structure for Screens is much simpler than for Sims. Screens sell ALL stocks every rebalance and rebuys the top ranked stocks every rebalance. So normally, most stocks just sold would be rebought if they are sill top ranked. Therefor, a rule that blocked ALL stocks from being rebought would cause the Screen to buy all new stocks every rebalance. That is why a rule to block rebuying stocks is not allowed.

The Sims will hold all stocks every rebalance unless they meet one of the sell rules. In Sims, you may have a rule that sells a stock even though it may still be top ranked. Since you probably designed the sell rules to sell for specific purposes, you may not want a stock that is sold to be rebought. That is the purpose of the rules Steve and I mentioned above.

The Screener is great for a quick look at a list of stocks that are both high ranked and pass your rules, or a quick look at an approximation of the historic performance. The Sim is much better and more accurate for back testing performance, and better at simulating real trading.

Denny :sunglasses: