On June 29, 2026, Susquehanna International Group (SIG), one of the largest options market makers in the U.S., filed a lawsuit in the Federal Court of Manhattan, New York, alleging that hundreds of individuals had prior knowledge of China's regulatory actions against illegal cross-border stock trading announced on May 22. They reportedly made unusually large purchases of put options for Tiger Brokers (NASDAQ: TIGR) and Futu Holdings (NASDAQ: FUTU), which faced heavy penalties, earning over $100 million in profit. According to the latest reports from Bloomberg, a judge in the Manhattan Federal Court has ordered the freezing of certain related accounts held by three brokerage firms and has issued subpoenas to each brokerage to obtain the identity information of the account holders.
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Early Knowledge of China's Regulatory Actions: Hundreds Short Tiger Brokers and Futu Sued
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