I was wondering the same. Sounds reasonable on one level - where's the surprise in the share price moving following a price sensitive announcement - that's what rational market theory would expect.
But the recent report was positive and the share price has gone the other way (and as hoots has pointed out - on relatively high volume) - so perhaps it wouldn't be unreasonable to ask if some in the market might be aware of something the rest of the market hasn't heard about.
BTW: I don't expect anything is wrong - I think it's just a marketplace of individuals doing what they do.
