Have a look at the little bar (candle) on the 28/10
That bar contained supply, which knocked the shareprice down a little.
You are now moving back up to that level again (84.5) and there are holders who bought that bar (and have been in a losing position for a while) who want to get out.
Whether that supply will be absorbed or not and you get higher prices in the short term, is not known yet.
cheers
BND Price at posting:
80.0¢ Sentiment: None Disclosure: Not Held