Generally t/o stocks fall just before it is announced, because the person who wants to take it over wants it as low as possible so they don't have to bid as high, they can say hey VBA was trading at 29c and we offer 50c that's a massive premium
CCL was recently taken over offer, it was pushed down, ran up a bit and fell the day before it was taken over.
I don't know if VBA is going to be taken over, but there have been rumours in the media about REX being interested, and Singapore owns a substantial portion of REX
VBA Price at posting:
26.2¢ Sentiment: Buy Disclosure: Held