These UBS announcements over the last year have consistently shown an institutional investor selling and buying stock most days and also shorting the stock regularly. This appears to have been linked to automated trading which I expect has suppressed the trading over the share price over the last 3 months.
The automated trading now appears to have ceased at the same time as this announcement and the large cross on the open yesterday.
WMX Price at posting:
$1.08 Sentiment: Buy Disclosure: Held