Dell

[Tomcat8]

There is something wrong.

[Tomcat8]

and this.

[Tomcat8]

and this

[ScottJ]

From what I can tell thus far, it looks like after-hours trading kicked-in and that's those gaps you are reporting.

You'll see a similiar gap on this simple Yahoo chart. If you change your time-template to 24 hours, you'll see a much smoother price chart. I don't personally follow Dell but in a quick check on Yahoo, there's plenty of news on Dell from last week including this story reporting that Dell rose 1.7% in after-hours trading.

If you still believe there's a problem in the data, please re-post and try to provide as much information as possible.

Thanks.