Shanghai Stock Exchange reopens Jan. 5: Shanghai Composite near 4,000 as AI-chip buzz builds
4 January 2026
2 mins read

Shanghai Stock Exchange reopens Jan. 5: Shanghai Composite near 4,000 as AI-chip buzz builds

NEW YORK, January 4, 2026, 08:10 ET — Market closed

  • Mainland China’s A-shares reopen Monday after a New Year holiday halt.
  • Shanghai Composite last closed at 3,968.84, up 0.09%, with the 4,000 level in focus.
  • China data and global macro events, including U.S. jobs figures, are the next tests for risk appetite.

Mainland China’s A-shares — yuan-denominated shares traded on the Shanghai Stock Exchange and Shenzhen bourses — will resume trading on Monday, Jan. 5, after the New Year holiday shut onshore markets. Hong Kong set an upbeat tone on Friday as the Hang Seng Index rose 2.76%, with Baidu jumping 9.5% after it said it planned to spin off its AI-chip unit Kunlunxin for a Hong Kong listing, while chipmaker Hua Hong Semiconductor gained 9.4% after it announced a deal to expand foundry capacity. 1

The Shanghai Composite index (.SSEC) last closed at 3,968.84 on Dec. 31, up 0.09% in its final session of 2025, leaving it just below the psychologically important 4,000 mark. It has climbed about 18% over the past year and is trading near the top of its 52-week range, with the high at 4,034.08, according to LSEG data carried by the Financial Times. 2

That matters because the first full week of onshore trading often sets the tone for January positioning, when funds rebalance and retail participation tends to pick up. With offshore tech sentiment improving, investors will be looking for signs that the AI trade can pull mainland flows into semiconductors and software, rather than peter out as a one-day catch-up move.

A fresh catalyst has come from the IPO market. Shanghai Biren Technology shares closed up 76% in their Hong Kong debut after a HK$5.58 billion initial public offering, with the stock hitting an intraday high of HK$42.88, Reuters reported. Winston Ma, an adjunct professor at New York University School of Law, said Chinese AI startups are “going public faster than U.S. giants.” 3

For Shanghai investors, Biren’s debut is being watched as a sentiment gauge for China’s domestic semiconductor push. Any spillover could concentrate in the STAR Market, Shanghai’s tech-heavy board, where many hardware suppliers and AI-adjacent names are clustered.

The reopening tone may also hinge on whether investors rotate into heavyweight banks and energy companies that dominate the Shanghai benchmark, or chase the higher-volatility technology trade seen offshore. Thin liquidity after a break can amplify early swings, especially in smaller-cap growth shares.

Before the next session begins, investors get a read on services demand. The Caixin services purchasing managers’ index (PMI) — a survey-based gauge of activity where readings above 50 indicate expansion — is scheduled for release late Sunday in New York, with a forecast of 52.0 versus 52.1 previously. 4

China’s consumer price index is next, with December CPI inflation due on Jan. 8; economists tracked by Investing.com expect an annual rise of 0.8%, after 0.7% previously. A firmer print would ease some deflation concerns, while a softer number would keep the focus on demand support and pricing power. 5

Global cues could also set the tone for the Shanghai reopen. A U.S. payrolls report is due on Jan. 9, while an OPEC+ meeting on Sunday and a commodity-index rebalancing starting Jan. 8 are on the near-term calendar; investors are also watching for a U.S. Supreme Court tariff ruling and an announcement of a new Federal Reserve chair, Reuters’ weekly markets preview said. 6

For Shanghai, the transmission channel runs through risk appetite and the yuan: softer U.S. data tends to lift expectations for rate cuts, which can support emerging-market assets. Oil moves matter too, given the weight of resource-linked companies in mainland indices.

Technically, the 4,000 handle on the Shanghai Composite is the immediate test — a round number that often acts as “resistance,” where selling pressure can cap gains. A sustained break would shift attention to momentum buying, while a failure could point to consolidation near recent ranges.

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