China’s CSI 300 Enters Bear Market as Weak Profits and Investor Pessimism Deepen Sell-Off

China's benchmark CSI 300 index has entered bear-market territory, falling 20% from its June peak as persistent selling pressure exposes deeper concerns about corporate profitability, domestic demand and investor confidence in the world's second-largest economy.

The index, which tracks 300 of the largest companies listed in Shanghai and Shenzhen, has declined for 10 consecutive weeks and is down 2.6% so far this week, according to LSEG data. It fell more than 1% on Thursday, extending a retreat that has weighed on Chinese equities despite the country's strength in several export-oriented industries.

The downturn highlights a difficult disconnect in China's economic outlook. The country remains competitive in areas such as batteries and artificial intelligence, but those capabilities have not translated into sufficiently broad improvements in corporate earnings or investor sentiment. Years of investment and capacity expansion have left some industries facing intense competition, putting pressure on prices, profit margins and returns on capital.

Jordan Cvetanovski, chairman and chief investment officer at Pella Funds, said China continued to struggle with the consequences of excessive investment and the build-up of industrial capacity.

"I think China is really struggling with reining in the problems that they've had in the past from the overbuild of capacity and other things," Cvetanovski told CNBC.

He pointed to the challenges confronting companies even in globally competitive industries such as batteries, although he continues to see opportunities in selected Chinese businesses.

Manufacturing strength and export competitiveness do not necessarily translate into attractive equity returns when numerous producers compete for market share, forcing companies to cut prices or accept lower margins. The situation has exposed shareholders to the critical question: can businesses convert their production capacity and technological advantages into sustainable earnings growth?

Chinese companies have faced slowing profit growth as competition intensifies across several industrial sectors. The pressure has become sufficiently pronounced to prompt government intervention in some industries, where excessive competition has contributed to price reductions and weakened profitability.

In September, China recorded its weakest industrial-profit growth of the year, adding to concerns that the recovery in corporate earnings remains fragile.

The broader economic backdrop has also complicated the outlook. China's economy grew at its slowest pace in more than three years in the second quarter, according to the supplied figures, as a prolonged property-sector downturn and subdued consumer demand continued to constrain activity.

The property market remains particularly important because of its influence on household wealth and confidence. When property values weaken, households may become more reluctant to spend, while businesses face a less supportive domestic market. Weak consumption, in turn, makes it harder for companies to increase sales without relying on exports or competing more aggressively on price.

These pressures create a difficult environment for equity valuations. Even where companies continue to expand production or develop new technologies, investors may remain reluctant to pay higher prices for their shares if earnings visibility is limited.

Shaun Rein, managing director at China Market Research Group, expects further selling pressure as geopolitical uncertainty, concerns about an artificial intelligence bubble and deteriorating consumer confidence weigh on market sentiment.

China's investor base could amplify the decline. Retail investors account for about 90% of daily trading in the country, according to data provided by HSBC, compared with approximately 20% to 25% of trading volumes on major markets such as the New York Stock Exchange.

The high participation of individual investors can make market movements more sensitive to changes in confidence. During periods of uncertainty, investors may respond quickly to losses or negative headlines, intensifying selling pressure and increasing volatility.

"For Chinese, it's about wealth preservation," Rein said, pointing to the growing preference for safer assets such as time deposits amid weakness in the property market and sluggish labor conditions.

That preference presents a challenge for policymakers and companies seeking to restore confidence in equities. Lower interest in risk assets can limit demand for shares even when individual businesses retain strong competitive positions. It also suggests that improving stock-market performance may require more than a rebound in headline economic growth; investors need greater confidence in household wealth, corporate earnings and the reliability of future returns.

Despite expecting further pressure on the market, Rein believes the sell-off has gone too far. He cited resilient exports and signs of a recovery in property prices in China's largest cities as reasons for a more constructive outlook.

"It's a crisis of confidence right now not a crisis in the economy," he said, predicting a strong rebound in Chinese equities in 2027.

His assessment points to a possible gap between current investor pessimism and the underlying performance of parts of the economy. Strong exports can support manufacturing activity and earnings in internationally competitive sectors, while a sustained improvement in property prices could help stabilize household confidence.

However, these factors do not guarantee a broad recovery in share prices. Export strength can coexist with weak domestic demand, and improvements in selected property markets may not be sufficient to reverse the effects of a prolonged nationwide downturn. A durable rebound would also depend on whether companies can improve profitability rather than simply increase output.

Daniel Gerard, senior multi-asset strategist at State Street Markets, offered another potential source of support, arguing that China's growing artificial intelligence capabilities could eventually attract global investors back into its equity market, even before corporate earnings recover.

AI could provide investors with a reason to reassess Chinese technology companies and related industries, particularly if local firms demonstrate that they can develop commercially viable products and compete internationally. But the prospect of technological progress must be weighed against concerns about valuations, capital spending, and the ability of companies to generate adequate returns.