G'day Kenny,
I can't predict the future but I should point out that of the 80k traded today less than 10k were under the 150 and 6k of those were a cross trade. Somebody dropped a small block on the buyers at end of day that makes the close look bad.
IMO CST is just range trading, biding it's time till the news starts rolling (very very soon). It never seems to have much trouble in finding buyers.