America’s biggest health insurers are about to get even bigger, driven into a wave of consolidation by Obamacare’s new regulations and markets. Anthem’s disclosure Saturday that it’s offered about $47 billion for Cigna Corp. is the first public confirmation the deal-making is in full swing. Cigna rejected the offer on Sunday, despite Anthem’s attempt to pressure Cigna’s board by taking the offer public. Anthem, Aetna Inc. and UnitedHealth Group Inc. all are poised to emerge as buyers or sellers when the dust settles. Read article here.