Our latest roundup of deals worth $1 billion or more includes Valeant Pharmaceuticals International Inc.'s purchase of Salix Pharmaceuticals Ltd. for $10.1 billion; Asahi Kasei Corp.'s buy of Polypore International Inc. for $3.2 billion; and a merger between silicon producers Grupo FerroAtlántica and Globe Specialty Metals Inc. for a combined value of $3.1 billion.

Latham & Watkins advised on the most number of deals, with four, while Sullivan & Cromwell led the way in terms of transaction value.

Valeant Pharmaceuticals International Inc. /Salix Pharmaceuticals Ltd.