The run from $1.92 to $2.12 in pretty quick time indicates...

The run from $1.92 to $2.12 in pretty quick time indicates someone got a whiff of something.

Yes, $2.12 isn't particularly good. In fact, it is completely idiotic in the context of the company's real position and future prospects, but everything is relative.

A run up of almost 10.5% in a few days is pretty healthy.

The trading halt pertains to the sale of the land. Is it possible that the announcement will include something connected to that sale - such as a buy back, or a POSCO JV? Would that still be within the rules in terms of announcement topics in these situations?

There is something more to this, and looking at the behaviour in the days prior suggests it's good news.