The massive runup from the extreme oversold lows of Mid-August gave me an idea to test. Let’s test a rate of change that just occurred from the lows on the Nasdaq 100 37 days ago. As of Fridays close we were greater than 12% higher than price 37 days ago. A big big move.

100907_ndx.jpg

So if we screen for that condition and enter the next day at the open. (noted in blue dot)

And code an exit logic that looks like this:

We exit no matter what after 22 days (about 1 month) at the following open

or

We hit a 10% profit target

We do this on the Nasdaq 100 Index going back to Feb 1988 (beginning of data)

This condition triggered on 62 occasions - 69.35% were profitable - with an average profit of 2.65% - the dollar profits and drawdown are based on $15,000

100907_stats.jpg

Thats massive. As a matter of fact the average return over any 22 day period would be +1.22% yet we are seeing +2.65% average return.

The 10% profit target probably was only hit once or twice right? Wrong. Out of the 62 trades 16 hit the 10% target before the 22 day timeout exit. That is about 25% of the time. I put a link below where you can download a PDF showing all the trades.

Here is a PDF with all those trades listed

I am not here to expouse a particular bullish or bearish view. I can only show you what I am seeing in this test. I have no bias and I will not make any particular trade based upon this test. This data is very similar to a test I ran on the old blog that everyone dismissed at the time (here and here). Also some of the newer readers may benefit from a post on the old blog that talked about my portfiolio construction. That has changed only slightly from when I wrote that and has done very well for me. But that is another post for another day.

Have a Great Day!

Dave Johnson


2 Responses to “An Interesting Backtest I Ran”

  1. Damian Says:

    Dave - what’s the condition? ROC 12%? From the trades it looks like > 12%….

  2. Dave Says:

    correct a close >12

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