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Thursday, April 25th 2019

Backtester New Feature: Long & Short Stock Strategies

Backtesting Long Stock And Short Stock Strategies and combining with options strategies like a short call to simulate a covered call or buywrite.


The Backtester now allows for Long Stock and Short Stock strategies to be run on a symbol or list of symbols with weights and defined start and end dates. This feature is useful for combining stock strategies with other options strategies, such as a short call to simulate a covered call or buywrite. The process involves running a Long Stock and Short Call strategy backtest, selecting both, clicking 'Combine', entering the desired weights, and clicking 'Submit'. The combined strategy will calculate and produce a new backtest. Pricing and subscription information can be found on the ORATS website.

We have added the ability to run a Long Stock and Short Stock strategy to the backtester. You can run the strategies on a symbol, list of symbols with weights, and with defined start and end dates.

This new feature is important 1) to see the results of a stock (or group of stocks) and 2) to combine stock strategies with other options strategies.

Let's look at an example from one of our clients: Sell 2 calls for every 100 shares of long SPY.

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First run a Long Stock strategy and a Short Call strategy backtest. When those tests are complete, check the box next to each name. A 'Combine' button should appear above the backtest list as seen below. If the Combine does not appear you may have to upgrade your subscription which you can do here.

When the Combine Backtest dialog appears enter 2 for the Short Call (indicating a weighting of 200%) and 1 for the Long Stock. Click Submit and the combined strategy will calculate and come up with a new backtest. The results appear like this.

You can check your work like this: The Short Call return is 0.18% times 2 is 0.36% plus the Long Stock return of 9.72% = 10.08% as we see.

Go to to try it out!

To see pricing for various levels of the backtester, go HERE.

If you need to upgrade or cancel your subscription you can do that HERE.

Check out backtesting blogs HERE

Check out the new features youtube of the backtester HERE

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