Pfizer has reclaimed second place in the November 2011 PharmaDeals Corp-METRx Deal Activity League Table from GlaxoSmithKline, which held the position in October 2011 (PharmaDeals Corp-METRx, Pfizer, November 2011). The two companies rankings have oscillated in recent months although Pfizer emerged as the more prolific dealmaker in October 2011 (the last full month used to compile the November 2011 rankings).