StockFetcher Forums · Filter Exchange · Bollinger Band WIDTH<< >>Post Follow-up
karennma
6,829 posts
msg #27304
Ignore karennma
7/10/2003 8:07:04 PM

I've noticed some filters specify BB Band width. HOW do u determine the "width" of the bands, and what r the measurements?. Where can I find information on "band widths".
thanks.
karen



psihoover
3 posts
msg #27307
Ignore psihoover
7/10/2003 10:08:51 PM

If you are familiar with statistics, the width defines standard deviations from the center. If not, think of it as how far the bands are from the moving average centerline used. The moving average is the other parameter used when selecting Bollinger Bands.

You may want to pick up a copy of "Bollinger On Bollinger Bands", or visit is website at the same address - just leave out the spaces, and add ".com".

Also, use a search engine like Google, and enter Bollinger Bands. It will bring up a number of sites, and some of them give extensive information on Bollinger Bands in particular, or technical analysis in general.

Richard H.


karennma
6,829 posts
msg #27328
Ignore karennma
7/12/2003 7:53:24 PM

What wrong with this filter?
Why are the widths different?

show stocks where the bollinger width(20) 5 days ago dropped between 0 and 0.05 and close is between 1 and 2 and volume is above 100000


psihoover
3 posts
msg #27353
Ignore psihoover
7/14/2003 10:10:48 AM

There are two adjustable parameters (factors) for Bollinger Bands. One is the moving average and one is the bandwidth. The bandwidth represents how tightly you want the bands to appear above and below the moving average centerline that will ride along with the stock. Asking to see stocks whose bandwidth had dropped to a certain level is an indication of a "squeezing" (or narrowing) of the bandwidth. There is nothing wrong with the filter, but it may not find many (or any) on given days.

Richard H.


StockFetcher Forums · Filter Exchange · Bollinger Band WIDTH<< >>Post Follow-up

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