I think trading was suspended for a few mins. I note that the last sale was $2.89 and the offer was $2.92 and the bid $2.91 and the Commsec status was "Pre-Open" (at 12:25).
The Commsec status now, at 10:32 is "Normal"
BTA Price at posting:
$2.94 Sentiment: Hold Disclosure: Held
