I did a search and also looked at the guide and really couldn't get a good answer to a question I have which really more opinion. From your experience do you (Cone/Eugene) use the Bad Tick Filter and if so what is a reliable value? I know they mention less then 1 % but what would you recommend? I know this is a sunjective question. A few times on the 1 minute bar I noticed that the low or high spiked real quick; hit my stop and then went in my direction after I was out. Specialist taking out stops something all traders need to deal with.

Thanks.

It depends on the market you're trading as well as on data feed quality...

As example QQQ using fidelity as the datafeed. Mostly high volume stocks and ETF's.

I know ttman is using Fidelity streaming (fed by Activ Financial since 6.0) and frankly it's the best/most solid streaming feed I've used.

I'd set it at a multiple of the greatest % spread you'd expect to see for the least-liquid market you're trading. For example, if you trade penny stocks, then the number probalby needs to be higher than 1%. For Nasdaq 100 stocks, less than half that probably (just a guess).