I was looking at a suspicious price. Our primary data feed had a questionable price. When I checked other data feeds, they disagreed with each other. Here are three free examples. Look at the price of the open.http://finance.yahoo.com/q?s=ntap
We also have a video tutorial highlighting this issue.
A lot of people try to be very precise. At one price they buy, at a penny less they don’t. Some people scour the charts, and get excited when we don’t match exactly to what they were expecting. Here’s the reality check. Here’s one I just happened to run into. I’m sure if I spent the time I could find a lot more. If you deal with market data, you have to understand the limits.