Willis announced the acquisition of PMI Health Group, an independent healthcare adviser and broker in the U.K. The deal will  raise Willis’s presence in the U.K. employee benefits and healthcare market, and  enhance its product offerings and skills base.

Aetna will acquire Humana for cash and stock valued at $37 billion. The acquisition will push Aetna’s Medicare Advantage membership to  4.4 million and make it possible for the two companies to share knowledge and innovations in order to create better healthcare products, the company said. The deal is subject to regulatory and other approvals; it is expected to be completed in late 2015.

AIG in early May 2015 announced that it has acquired a controlling stake in Brussels-based ING Employee Benefits Global Network and renamed it AIG Global Benefits Network (AIG GBN). AIG’s American General Life Insurance Company unit joined the pooling network as the new US partner, taking the place of ING USA, recently spun-off and renamed VOYA. VOYA, in turn, exits the US global employee benefits market in order to

Willis combines with Towers Watson to create a new $18 billion insurance, personnel, and risk company. Willis shareholders will own 50.1% of the new Ireland-based company, Willis Towers Watson. The new $18-billion company has annual revenue of about $8.2 billion and 39,000 staff in 120 countries, and advises more than 80% of the world’s top 1,000 companies.

Mansard Insurance, a leader in the Nigerian employee benefits market, joins the MAXIS Global Benefits Network as a result of the acquisition by AXA of 100%  of Assur African holdings, which holds a 77% stake in Mansard Insurance plc. Through this acquisition, AXA has become the #4 insurance player in Nigeria. Interestingly, Mansard announced its joining of the Insurope pooling network on May 29, 2015.