BYD COMPANY LIMITED 
The announcements come as China's securities regulator ordered shareholders with stakes of more than 5 percent to refrain from selling in the next six months in a bid to ease pressure on its stock markets.
China's stock markets have suffered from major sell-offs losing around a third of their value since June, prompting the government to unveil a series of market-supporting moves.
On Wednesday, the CSI300 index <.CSI300> of the largest listed companies in Shanghai and Shenzhen closed down 6.8 percent, while the Shanghai Composite Index <.SSEC> dropped 5.9 percent.
China's finance ministry and state investor Central Huijin Investment Ltd pledged not to reduce their shareholdings in the country's Big Four banks - Industrial and Commercial Bank of China Ltd (ICBC) (>> Industrial and Coml Bank of China Ltd)<1398.HK>, China Construction Bank <0939.HK> (>> China Construction Bank Corporation), Agricultural Bank of China Ltd <1288.HK> (>> Agricultural Bank of China Ltd) and Bank of China Ltd (>> Bank of China Limited)<3988.HK>.
Sinopec Corp <0386.HK> (>> China Petroleum & Chemical Corp)
China Railway Construction Corp Ltd's (>> China Railway Construction Corp Limited)<1186.HK> controlling shareholder bought 1.15 million shares in the secondary market, lifting its stake in the company to 61.34 percent, the company said in a filing on Wednesday.
Electric vehicle maker and Warren Buffett-backed BYD Co Ltd's (>> BYD Company Limited)<1211.HK> controlling shareholder and executives plan to lift holdings in the company.
In a bid to boost market confidence, China's fourth-largest broker Haitong Securities Co Ltd (>> HAITONG Securities Company Limited)<6837.HK> said it planned to buy back shares for up to 21.6 billion yuan($3.5 billion) within six months.
(Reporting by Lee Chyen Yee in Singapore, Twinnie Siu and Christina Lo in Hong Kong,Editing by Elaine Hardcastle)
