Arena stock (ARNA) is long from $16.20.  ARNA is trading at $40.75 as of this writing, up $9.86 for the day.  It has traded as high as $44.44.

The company reported impressive results from a Phase II trial of its ulcerative colitis drug.

Previously we have stated that in a buyout,

In the event of a buyout, a price in the zone of $44 to $52 is possible.

Based on the trial results, we are revising the target zone in a buyout to $75 to $88.

The new buy zone for Arena is $28 to $35.57.