Hi Sanjay, A "bad tick" is just some erroneous information or noise that has sent through as trading data.
In the data it appears as a spike that is "way off the scale". It just looks unreasonable. Sometimes however traders do make mistakes or stops going off take some prices to a ridculous levels and it is can be hard to tell bad ticks from bad trading. Robert Z ________________________________ From: Sanjay Arora <[email protected]> To: [email protected] Cc: [email protected] Sent: Sunday, 7 June, 2009 12:23:54 AM Subject: [amibroker] What's a Bad Tick? What issues to look for in data feed? Hello All I have come across the term "Bad Tick" a lot. Can someone tell me how a data tick can be bad? What to look for in a data feed? How to compare one feed to another? Comments, Resources/Links please. Sanjay. Need a Holiday? Win a $10,000 Holiday of your choice. Enter now.http://us.lrd.yahoo.com/_ylc=X3oDMTJxN2x2ZmNpBF9zAzIwMjM2MTY2MTMEdG1fZG1lY2gDVGV4dCBMaW5rBHRtX2xuawNVMTEwMzk3NwR0bV9uZXQDWWFob28hBHRtX3BvcwN0YWdsaW5lBHRtX3BwdHkDYXVueg--/SIG=14600t3ni/**http%3A//au.rd.yahoo.com/mail/tagline/creativeholidays/*http%3A//au.docs.yahoo.com/homepageset/%3Fp1=other%26p2=au%26p3=mailtagline
