• Download software • Tutorial videos
• Subscription & data-feed pricing • Class schedule


• New account application • Trading resources
• Margin rates • Stock & option commissions

Attention: Discussion forums are read-only for extended maintenance until further notice.
Welcome Guest, please sign in to participate in a discussion. Search | Active Topics |

Worden Discussion Forum » Customer Training & Support » Ask a Trainer - TC2000 version 7 » bollinger bands

bollinger bands Rate this Topic:
Previous Topic · Next Topic Watch this topic · Print this topic ·
hs1935
Posted : Saturday, March 13, 2010 10:56:28 AM
Registered User
Joined: 10/7/2004
Posts: 7

Can I scan for when a stock starts to  come out of a narrow bollinger band squeeze and the upper band starts to point up. If this has already been discussed could you point me to it. Thanks 
Back to top
Bruce_L
Posted : Monday, March 15, 2010 11:19:50 AM


Worden Trainer

Joined: 10/7/2004
Posts: 65,138
 A Personal Criteria Formula for a Bollinger Band 20,20 that was going down and is now going up would be (the formula would need to be changed for different BB settings):

Modelling Bollinger Bands (& Standard Deviation) in a TC PCF

AVGC20 + 2 * SQR(ABS(C ^ 2 + C1 ^ 2 + C2 ^ 2 + C3 ^ 2 + C4 ^ 2 + C5 ^ 2 + C6 ^ 2 + C7 ^ 2 + C8 ^ 2 + C9 ^ 2 + C10 ^ 2 + C11 ^ 2 + C12 ^ 2 + C13 ^ 2 + C14 ^ 2 + C15 ^ 2 + C16 ^ 2 + C17 ^ 2 + C18 ^ 2 + C19 ^ 2 - 20 * AVGC20 ^ 2) / 19) > AVGC20.1 + 2 * SQR(ABS(C1 ^ 2 + C2 ^ 2 + C3 ^ 2 + C4 ^ 2 + C5 ^ 2 + C6 ^ 2 + C7 ^ 2 + C8 ^ 2 + C9 ^ 2 + C10 ^ 2 + C11 ^ 2 + C12 ^ 2 + C13 ^ 2 + C14 ^ 2 + C15 ^ 2 + C16 ^ 2 + C17 ^ 2 + C18 ^ 2 + C19 ^ 2 + C20 ^ 2 - 20 * AVGC20.1 ^ 2) / 19) AND AVGC20.1 + 2 * SQR(ABS(C1 ^ 2 + C2 ^ 2 + C3 ^ 2 + C4 ^ 2 + C5 ^ 2 + C6 ^ 2 + C7 ^ 2 + C8 ^ 2 + C9 ^ 2 + C10 ^ 2 + C11 ^ 2 + C12 ^ 2 + C13 ^ 2 + C14 ^ 2 + C15 ^ 2 + C16 ^ 2 + C17 ^ 2 + C18 ^ 2 + C19 ^ 2 + C20 ^ 2 - 20 * AVGC20.1 ^ 2) / 19) < AVGC20.2 + 2 * SQR(ABS(C2 ^ 2 + C3 ^ 2 + C4 ^ 2 + C5 ^ 2 + C6 ^ 2 + C7 ^ 2 + C8 ^ 2 + C9 ^ 2 + C10 ^ 2 + C11 ^ 2 + C12 ^ 2 + C13 ^ 2 + C14 ^ 2 + C15 ^ 2 + C16 ^ 2 + C17 ^ 2 + C18 ^ 2 + C19 ^ 2 + C20 ^ 2 + C21 ^ 2 - 20 * AVGC20.2 ^ 2) / 19)

I'd need an unambiguous objective definition of "narrow Bollinger Band squeeze" to help you with that portion as well.

Finding Expanding or Contracting Bollinger Bands

You would probably want to use the Personal Criteria Formula as an EasyScan Condition to identify the symbols with the desired characteristics.

How to create a Personal Criteria Forumula (PCF)
Using EasyScan to find stocks that meet your own criteria
PCF Formula Descriptions
-Bruce
Personal Criteria Formulas
TC2000 Support Articles
Back to top
hs1935
Posted : Tuesday, March 16, 2010 11:57:01 AM
Registered User
Joined: 10/7/2004
Posts: 7
 Thanks, Bruce. Regarding an unambiguous definition of BB squeeze, I don't know how to express it in mathematical terms....... but an example would be a stock like TRIB in the weeks before it broke out on 2/23/10, with an expansion in the BB and breakout in price. Is it possible to scan for something like that?
Back to top
Bruce_L
Posted : Tuesday, March 16, 2010 12:10:29 PM


Worden Trainer

Joined: 10/7/2004
Posts: 65,138
 I really can't help you develop a formula without a unambiguous objective definition. An example can be a great help in understanding such a definition but isn't a substitute for a definition.
-Bruce
Personal Criteria Formulas
TC2000 Support Articles
Back to top
Users browsing this topic
Guest-1

Forum Jump
You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.