Warren Buffett makes big investment in U.S. pharmaceutical firms

The investment company run by billionaire investor Warren Buffett bet $5.7bn (£4.3bn) on pharmaceutical companies during the third quarter of 2020, as the sector takes centre stage in the fight against the coronavirus pandemic. Berkshire Hathaway bought shares in drug companies AbbVie, Bristol-Myers Squibb, Merck and Pfizer between July and September, according to filings with the US regulator.