Pfizer-Allergan rumors intensify

Allergan plc (NYSE:AGN) rallied in after-hours trading Wednesday, gaining $2.20 to $313 after media reports said Pfizer Inc. (NYSE:PFE) is nearing a deal to acquire it for up to $380 per share, or about $150 billion.

Allergan had fallen 6% to $291.50 after hours Wednesday on postmarket news that the U.S. Treasury intends to issue guidance concerning tax inversions (see below). An Allergan-Pfizer merger could result in a tax inversion for Pfizer. Allergan is headquartered in Ireland. ...