According to Foresight News, crypto KOL and former FTX community partner Benson Sun analyzed that "At 18:30 today, ACT suddenly plummeted 50%. The reason was Binance's adjustment of ACT's leverage position limit, where a 1x leverage can now open a maximum position of $4.5 million. Some market makers' positions exceeded the limit and were directly liquidated at market price. After the contract price collapsed, a huge price difference emerged with spot prices, causing the spot market to crash as well. Binance issued the announcement on April 1st at 15:32, with the effective time being 18:30, giving users less than 3 hours to react. On March 31st, Binance had already modified ACT's position limit once, and on April 1st, they further cut the position limit for low leverage by 50%. Before modifying the rules, Binance should have first assessed how many positions would be liquidated. If market makers have large positions, they should have been notified in advance. As an industry leader, we hope Binance can handle this incident properly."