glgene
613 posts
msg #96941
- Ignore glgene |
10/15/2010 12:20:31 AM
Just read about the SF inertia filter (page 61 in the User Guide). Not much write-up on that page.
From another source I researched, it says when the Inertia indicator is above 50, positive inertia is indicated, and the long-term trend (of a stock) is up and should remain up as long as the indicator stays above. Vice versa for below 50.
So I wrote a SF script to test it. I used the Intertia parameters (14,10,20) as shown in the example on page 61 of the SF User Guide. I used a simple Symlist, not a scan of stocks.
From end-of-day data on 10-14-2010, for example, it shows that VTI would have fired a 'sell' on 10-13-2010. That's because Intertia went from 50.01 on 10-12-2010 to 48.25 on 10-13-2010. That may prove to be correct.
But if you do a Chart view of the 6 stocks, you'll see the 14,10,10 parameters (overall) don't seem to work well. Too fast, or too slow. Maybe I didn't code properly on days back. ???
In the script, I added columns to not only show today's Inertia, but also 1-5, and 10 days back, along with 1-2 mos. back.
Since Intertia is a new topic to me, I was wondering if anybody here who uses or has experimented with the settings of Inertia, please step forward and share your thoughts.
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