China curbs cross-border trading, affecting HK$250 billion in Hong Kong-linked assets

China’s latest crackdown on cross-border stock trading could affect as much as HK$250 billion, or about $32 billion, of assets linked to Hong Kong, according to Citic Securities, as Beijing moves to tighten control over capital outflows and rein in trading strategies it sees as risky. The measures come amid a broader effort by Chinese authorities to curb volatility in mainland markets and limit channels that allow investors to move money or take positions across borders.