In early Asian trade, Hong Kong, Singapore and Taipei were all down more than one percent, while there were also losses in Seoul, Jakarta and Wellington, though Sydney and Manila edged up.
BYD reported 4.23 billion yuan ($643.75 million) net profit in 2020, up from 1.61 billion yuan in 2019. That compared with a 4.6 billion yuan net profit estimated by 22 analysts, according to Refinitiv data.
The Shenzhen-based car company, which has partnerships with Japan's top automaker Toyota and German Daimler in China, sold 426,972 vehicles in 2020, 7.5% lower from a year earlier.
In 2010, Buffett and Gates launched the "Giving Pledge," which called on billionaires to commit to giving at least half of their wealth to charitable organizations.