The Direxion Daily FTSE China Bull 3X Shares (YINN) surged nearly 9% in pre-market trading on Monday, following a massive rally in the Chinese stock market. The Chinese equity markets experienced their biggest single-day gain since 2008, with the Shanghai Composite Index (SHCOMP) soaring around 8% and the blue-chip CSI 300 Index (SHSZ300) rallying 8.5%.

The rally was fueled by better-than-expected manufacturing data and rising hopes for significant stimulus measures from the Chinese government. China's official Manufacturing PMI improved slightly in September, albeit remaining in contraction territory, while a private survey showed a sharper-than-expected decline in manufacturing activity.

Investors cheered the prospect of further economic support from Beijing, with the People's Bank of China recently announcing measures to reduce mortgage rates for existing home loans and lower reserve requirements for major banks. These actions aim to bolster the struggling property sector and stimulate economic growth.