Don't understand the meaning of "made a brave move up on good volume"?

Question

The whole sentence is:

{{The market made a brave move up on good volume despite more signs of slow economic growth and a lot of investor uncertainty.}}

I don't know whether it should be [make a brave move] [up on good volume], or [make a brave move up] [on good volume], and I just don't know what "on good volume" means. Can anybody here help me? Appreciate your help!

Answer 1

[make a brave move up][on good volume]

on good volume means a good amount.