Buffett's Berkshire reveals over $6B investment in Chubb, sending shares higher

Warren Buffett's Berkshire Hathaway disclosed a $6.72 billion investment in insurance company Chubb, boosting its shares to a record high. Owning 25.92 million shares as of March 31, the news caused Chubb's stock to surge over 7.5% in after-hours trading. The investment reflects Berkshire's confidence in the property-casualty insurance sector, a familiar field for Buffett.