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StockFetcher Forums · Filter Exchange · Need help with Bollinger Band filter

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trendscanner 265 posts msg #86938 - Ignore trendscanner	1/24/2010 8:58:39 PM I'm trying to find stocks with a certain maximum ratio between the difference between the maximum Bollinger Band width over a past period and the minimum Bollinger Band width during that same period. I tried the approach below with no success. Any ideas how to code something like this? This is what I tried that didn't work. set{diff, upper Bollinger band(20,2) - lower bollinger band(20,2)} set{diffmax, high 12 month high diff} set{diffmin, low 12 month low diff} ratio{diffmax / diffmin} ratio < 5 thanks
chetron 2,817 posts msg #86943 - Ignore chetron modified	1/24/2010 9:18:32 PM MAYBE... Fetcher[ set{Vdiff, upper Bollinger band(20,2) - lower bollinger band(20,2)} set{diffmax, VDIFF 200 DAY high} set{diffmin, VDIFF 200 DAY low} SET{Vratio,diffmax / diffmin} Vratio < 5 ]
trendscanner 265 posts msg #86944 - Ignore trendscanner	1/24/2010 9:32:12 PM Thanks Chetron. Using your suggestions and fidddling with it, the version below seems to get at what I was looking for Fetcher[ set{diff, upper Bollinger band(20,2) - lower bollinger band(20,2)} set{diffmax, DIFF 12 month high} set{diffmin, DIFF 12 month low} diffmin > 0.1 SET{ratio,diffmax / diffmin} close > 0.1 Count(ratio > 5, 100) < 1 draw diff draw diffmax draw diffmin ]
chetron 2,817 posts msg #86946 - Ignore chetron	1/24/2010 9:37:29 PM I CHANGED THE MONTHLY THING TO AN EQUIVELANT DAILY THING.
trendscanner 265 posts msg #86947 - Ignore trendscanner	1/24/2010 9:43:28 PM Yes, thanks, I think the daily approach works better. This is my basic working version now Fetcher[ set{diff, upper Bollinger band(20,2) - lower bollinger band(20,2)} set{diffmax, DIFF 200 day high} set{diffmin, DIFF 200 day low} diffmin > 0.1 SET{ratio,diffmax / diffmin} close > 0.1 not etf Count(ratio > 5, 100) < 1 draw bollinger bands(20,2) draw diff draw diffmax draw diffmin chart-length is 6 months ]

StockFetcher Forums · Filter Exchange · Need help with Bollinger Band filter

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