Shanghai Composite Just Hit a One-Month High — While the ChiNext Index Broke Through Its Best Level Since 2015

On Wednesday, the ticker tape on a trading floor in Pudong, Shanghai, revealed a story that no one in New York was paying enough attention to. The Shanghai Composite closed at 4,106, a new one-month high, up 0.52 percent. At its highest level since December 2021, the Shenzhen Component increased by 1.3%. Additionally, China’s growth stock benchmark, the ChiNext Index, reached a new all-time high after rising 1.73 percent and surpassing its June 2015 peak. Together, more than 2,900 stocks saw gains, and the overall market turnover reached 2.58 trillion yuan, up 152 billion yuan from the previous day. China’s stock market was quietly enjoying one of its best days in months during a week that was dominated by American ceasefire diplomacy and Iranian shipping seizures.

IMPORTANT INFORMATION — SSE COMPOSITE INDEX (SHANGHAI COMPOSITE)

The industries that are contributing to the gains are sufficiently specific to provide insight. Co-packaged optics (CPO), a technology that incorporates optical transceivers directly into chip packages for AI data centers, saw a sharp increase, with several stocks reaching their daily limit-up of 10%. Jing Sai Technology experienced a 30% increase. Changguang Huaxin saw a 20% increase. Ten percent was added by Sanan Optoelectronics. The TrendForce research estimate that the global market for AI-dedicated optical transceiver modules would increase by 57%, from $16.5 billion in 2025 to $26 billion in 2026, served as the catalyst. China’s optoelectronics producers are well-positioned to take a sizable share of that growth, as many of them are globally competitive in this market. After the State Council released new policy language that specifically called for the acceleration of 6G technology research and development as well as the deployment of mobile IoT infrastructure, the 6G theme also gained significant traction. The market usually reacts quickly and visibly when the Chinese government releases a policy document with specific sector targets.

The 24 percent one-year return of the Shanghai Composite is a figure that merits greater consideration than it usually receives in Western financial reporting. After spending several years in a range that disappointed investors who recalled the 2007 peak above 6,000 or the 2015 peak near 5,000, the index was sitting close to 3,270 in late April 2025. A combination of domestic policy support, improving consumer sentiment in some industries, and the particular AI and semiconductor investment cycle that China’s government has been promoting through state-backed industrial policy are responsible for the recovery from that April 2025 low to the current level above 4,100. It’s still unclear how long the recovery will last because China’s economy is dealing with real issues like a property sector that hasn’t fully stabilized, youth unemployment that is close to four-month highs, and the kind of imported inflation brought on by $101 oil and a partially closed Strait of Hormuz.

The final point—imported inflation brought on by the Iran War—is worth considering. One of the biggest importers of Middle Eastern energy worldwide is China. Growing crude prices are an expense rather than an advantage. However, according to a CNBC report, some domestic investors are actively embracing the “imported inflation” theme, finding investable ideas about commodity stocks, energy security, and state-owned businesses with pricing power. Over the previous year, Zijin Mining has increased by 94%. PetroChina has increased by 46%. The market is finding winners even in the face of a geopolitical disruption that puts real economic pressure on the economy, and in certain instances, the disruption itself is what makes those winners successful.

There is conflict between two opposing impulses as April draws to a close. Strong Q1 domestic economic data, the continuing momentum of the AI sector, and the cooling of immediate US-Iran conflict risks are all positive indicators. On the cautious side, there are a number of factors to consider, including the fact that geopolitical tail risks still exist even with a ceasefire ostensibly in place, the fact that equity markets are getting close to their pre-conflict recovery highs, and the upcoming two weeks’ worth of earnings reports that could drastically affect sentiment in either direction. The strong rebound phase may be coming to an end, and the index is likely to consolidate around current levels pending new directional cues, according to a Chinese brokerage. It is a thorough, qualified, and most likely accurate read.

There is a sense that the market is in the middle of repricing a China that has been widely undervalued by international investors for the better part of three years as the Shanghai Composite moves through 4,100 and briefly touches higher. The real question is whether the current level of repricing represents a reasonable equilibrium given the structural uncertainties still present, or if there is more to be done. The answer most likely depends on whether the investment cycle in AI and semiconductors maintains its momentum and whether Chinese consumers, who are currently frugal but still engage in discretionary spending, determine that the economy is stable enough to make more confident purchases.