沪指失守4000点，存储器大回调，多股跌超9%，海南、福建板块大爆发

Market Overview - On November 14, the A-share market experienced a day of volatility, with the Shanghai Composite Index falling by 0.97% to close at 3990.49, while the Shenzhen Component Index dropped by 1.93% to 13216.03, and the ChiNext Index decreased by 2.82% to 3111.51 [1][2] - The total trading volume in the Shanghai and Shenzhen markets was 1.96 trillion yuan, a decrease of 853 billion yuan compared to the previous trading day [1] Sector Performance - The market showed mixed performance with over 3300 stocks declining. The lithium battery sector continued to perform strongly, with companies like Fujian Holdings and Shida Shenghua achieving multiple consecutive gains [1] - The gas sector also saw gains, with Shouhua Gas hitting the daily limit [1] - Conversely, the computing hardware sector experienced a collective pullback, and the optical module sector faced weakness among its major players [1] Storage Sector - The storage chip sector faced significant declines, with companies such as Tongyou Technology and Baiwei Storage dropping over 10% [4] - The storage index fell by 5.93%, closing at 3527.86 [5] - Notable declines included Jiangbolong down by 10.77%, and several other stocks in the sector also reported losses exceeding 9% [4][5] Regional Highlights - The Hainan Free Trade Zone is set to officially start its full island closure operation on December 18, 2025, which will implement a series of liberalization policies [8] - The number of zero-tariff items is expected to increase from 1900 to approximately 6600, covering about 74% of goods, which will significantly benefit local businesses [8] - The new policies are anticipated to enhance regional economic development and industry upgrades, with a focus on boosting duty-free sales and improving consumer traffic and spending [9]