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Beijing curbs quant trading speed as China strategy edge faces rivals
China’s exchanges in Shanghai and Shenzhen cut dedicated local-network queues on July 31, removing the microsecond advantage quant firms used to get on price feeds.
China’s quantitative funds have built trading strategies so tailored to the mainland market that foreign rivals struggle to replicate them, even as Beijing tightens rules that are reshaping how quant trading works, according to the South China Morning Post.
Wiselink Group founder and chief economist Xia Chun said the advantage stems from China’s unique valuation logic for state-owned enterprises, where state-backed financing influences pricing in ways that traditional foreign models fail to capture. He also pointed to frequent administrative interventions, such as IPO suspensions and policy-driven trading halts, which outside models have difficulty turning into usable signals.
Xia said that if top US quant teams were deployed in markets like Japan or India, they could outperform most native quant funds, highlighting that the edge is specific to China’s market structure and policy behavior.
His remarks came as Beijing tightened its grip on the quant trading industry. On the night of July 31, stock exchanges in Shanghai and Shenzhen cut the dedicated local-network queues that had allowed quant funds’ co-located servers to receive price feeds tens to hundreds of microseconds ahead of other participants, according to the report.