Warren Buffett’s Berkshire Hathaway invests in troubled insurer UnitedHealth

Berkshire Hathaway, the multinational conglomerate led by legendary investor Warren Buffett, acquired a stake valued at approximately $1.6 billion in insurer UnitedHealth Group, a regulatory filing revealed. The deal, made in late June, involved the purchase of more than 5 million shares of the company, making UnitedHealth the 18th- largest investment in…