The market surged yesterday but experienced a sharp late-day sell-off today, so let's follow the usual process and examine the potential causes.
The Shanghai Composite Index traded sideways throughout the day, while the ChiNext Index opened lower and extended its losses. By the close, the Shanghai Composite was up 0.07%, the Shenzhen Component Index was down 1.42%, the ChiNext Index had plunged 3.23%, and the STAR 50 Index fell over 2%.
Across the broader market, 1,530 stocks advanced with 48 hitting their daily limit-up, while 3,876 stocks declined.
Sectors such as precious metals, coal, power, and oil & gas were among the top gainers.
On the downside, the battery industry chain saw significant declines.
The AI hardware sector plunged in the final trading hour, with optical communication and PCB sectors leading the losses. Stocks like Xinyisheng, Zhongji Xuchuang, and Tianfu Tongxin tumbled sharply.
The semiconductor sector also moved lower.
Now, let's analyze the reasons behind the tech stock sell-off in late trading, which likely resulted from a confluence of factors.
First Catalyst: Regional Market Weakness
Collective declines in Japanese and South Korean stock markets created a ripple effect. The South Korean market, which had surged up to 6% in the morning session, nearly erased all its gains by the close, while Japanese stocks turned negative.
U.S. Nasdaq futures were also declining pre-market.
Second Catalyst: Industry-Specific News Flow
A significant portion of today's tech sell-off appears linked to circulating news regarding the optical module sector. Reports suggest an analyst expressed caution towards optical modules, stating the market has yet to fully price in a potential oversupply of optical chips next year.
Related sectors began falling, and despite the analyst later clarifying the remarks were merely relaying speculation from a listed company executive, the damage to prices was already done.
Third Catalyst: Profit-Taking Pressure
Following yesterday's sharp rally, the tech sector had accumulated substantial short-term profits. Funds pushed prices higher early in the session, enticing investors to chase the momentum, only for many to cash out their positions at elevated levels in the afternoon.
Fourth Catalyst: Risk-Off Sentiment
A risk-averse mood emerged ahead of key earnings. Alphabet Inc., Google's parent company, is scheduled to report quarterly results after the U.S. market closes on Wednesday, July 22, officially kicking off the Q2 earnings season for the "Magnificent Seven" tech giants. As the first mega-cap tech company to report, Alphabet's results will set the tone not only for the tech sector but also for the broader market. Any disappointment in capital expenditure figures could deal a significant blow to the AI industry chain.
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