Effective 6 July 2026, China’s stock exchanges implemented three significant trading rule changes aimed at improving market quality and enhancing price discovery.
The reforms represent a further step in the continued evolution of China’s capital market microstructure, introducing features broadly consistent with practices in more mature international markets.
The first reform expands after-hours fixed-price trading from its previous scope, which covered SSE 50, CSI 300, and CSI 500 constituent stocks and selected ETFs, to all A-shares and all ETFs.
This expansion significantly broadens the universe of securities available for after-hours transactions linked to closing prices, giving institutional investors much greater flexibility.
The second reform requires public funds to determine their closing prices through the existing closing call auction mechanism, rather than through continuous trading.
This change anchors public fund pricing directly to the auction-determined closing price, a structural shift with meaningful consequences for how funds are valued and traded.
Together, the two reforms are expected to concentrate more trading activity around common closing prices and enhance the importance of the closing-auction process in China’s equity markets.
Institutional investors should benefit from greater flexibility to execute after-hours transactions at prices linked to the market close, assisting portfolio rebalancing, benchmark tracking, and fund creation and redemption activities.
For ETFs, the impact of these two reforms could be especially meaningful, as increased trading liquidity and volume at the close could improve the representativeness of closing prices and facilitate more efficient portfolio rebalancing.
The third reform increases the daily price movement limit for ST and risk-warning stocks on the Main Board from 5% to 10%, a change that may raise short-term volatility but should improve pricing efficiency by allowing the market to incorporate information more quickly.
Taken together, these reforms are likely to strengthen closing-price trading and enhance price discovery, which should support long-term institutional participation in China’s capital markets and improve the broader ecosystem for ETFs.
The analysis was produced by Chloe Duan and Amigo L. Xie of K&L Gates LLP, writing for the firm’s Global Investment Law practice.