Chinese regulators move to limit high-frequency trading by removing a key structural advantage used by major quantitative funds: direct server access inside exchange data centers. Brokers are now required to relocate trading equipment offsite, introducing artificial latency measured in milliseconds.
The measures affect both domestic quant firms and global trading giants including Citadel Securities, Jane Street, and Jump Trading, where execution speed is central to profitability. Even minimal delays can materially reduce arbitrage and market-making returns in high-frequency strategies.
Authorities frame the crackdown as an effort to level the playing field for long-term and retail investors, signaling a broader push to rein in ultra-fast trading practices. The decision may reduce liquidity provision efficiency while reshaping how global funds approach China’s equity and derivatives markets.
