Warren Buffett tumbles to his lowest ever position on the list of the world's richest people after a $2.9 billion charity donation

7:20am PDT - July 9th, 2020    microsoft stock - Business Insider

• Billionaire investor Warren Buffett donated $2.9 billion worth of Class B shares in his Berkshire Hathaway charity this week, taking his total philanthropic contributions to $37 billion in 14 years.
• The donation, however, has pushed him to h…