Surprisingly, (to those who believe everything they read in text books), price frequently rises sharply on very little volume - quite contrary to what almost everyone believes.
There are a lot of myths in trading and people tend to believe them as they appear sensible, logical and are repeated so often they become accepted.
Sometimes there is a modicum of truth and reality in them, but the problem is that the exceptions often are more frequent than the accepted norm......
Most people would dispute that and I'm not going to argue with them, I just have 10 years experience of trading for a living so I know what works and what doesn't in this probability business - and it is a matter of probabilities, not certainties - and you do need to treat trading as a business.
This chart of a trade I did yesterday illustrates the point about price rising on falling volume.
Richard