证券时报·2025-10-23 09:39Market Overview - A-shares experienced a weak downward trend in the morning but stabilized and rebounded in the afternoon, with all three major indices turning positive by the end of the day. The Shanghai Composite Index closed up 0.22% at 3922.41 points, while the Shenzhen Component Index also rose 0.22% to 13025.45 points. The ChiNext Index saw a slight increase of 0.09% to 3062.16 points [1][2]. Quantum Technology Sector - The quantum technology sector saw significant gains, with stocks like Keda Guochuang and Dahua Intelligent reaching their daily limit of 20% increase. Other companies such as Dipu Technology and Guandun Quantum also experienced substantial rises, with Dipu Technology increasing over 14% [3][4][5]. - Recent advancements in quantum communication technology, including a successful experiment by China Telecom's Quantum Research Institute, have bolstered confidence in the sector. The experiment achieved a transmission rate exceeding 10Tb/s over a distance of more than 80 kilometers [5]. Coal Sector - The coal sector experienced a surge, with several stocks hitting their daily limit. Notable performers included Daya Energy, which has seen a cumulative increase of nearly 150% over the past ten trading days, and other companies like Shanxi Coking Coal and Yunnan Coal Energy also reached their limits [14][16]. - Analysts predict that coal prices may continue to rise due to a combination of supply constraints and increased demand during the winter heating season. The supply-demand relationship is expected to shift from structural surplus to a tighter balance [16]. Shenzhen State-Owned Enterprises - Shenzhen state-owned enterprises saw a collective surge, with stocks like Jian Ke Yuan and Te Fa Information reaching their daily limit. This follows the release of a new action plan aimed at promoting high-quality development in mergers and acquisitions within the region [17][18].