Musk’s US$130 Billion Reversal and China’s New Technology Wealth Boom

Musk’s fortune fell below the US$1 trillion threshold as shares of Tesla and SpaceX came under simultaneous selling pressure. SpaceX had raised a record US$75 billion in its June initial public offering, briefly making Musk the first individual whose estimated wealth exceeded US$1 trillion. However, the company’s shares subsequently retreated amid profit-taking, concerns about its valuation and uncertainty over whether future earnings from Starlink, launch services and artificial intelligence could justify its enormous market capitalisation. Tesla’s disappointing second-quarter earnings added to the pressure. The electric-vehicle maker reported weaker-than-expected profitability, narrowing automotive margins and negative free cash flow as investment in robotaxis, artificial intelligence, humanoid robots and chip manufacturing increased. Because Musk’s wealth is concentrated in equity stakes rather than cash, relatively small percentage changes in these companies can add or erase tens of billions of dollars from his estimated net worth.

The movement in the opposite direction was especially dramatic in China. ChangXin Memory Technologies, or CXMT, surged 466 per cent on its first day of trading in Shanghai, lifting its market value to approximately 3.28 trillion yuan, or US$484.5 billion. The rally transformed the value of shares indirectly held by CXMT’s executives, technical personnel and their relatives. Chairman Zhu Yiming’s holding was valued at nearly 80 billion yuan, while president and core technical expert Cao Kanyu’s stake exceeded 10 billion yuan. Fourteen directors, senior executives and technical personnel, together with close relatives, indirectly control more than two billion shares, demonstrating how a landmark listing can instantly turn entrepreneurial and technical ownership into enormous market wealth.

CXMT’s valuation also reflects its importance to China’s semiconductor strategy. The company is the country’s leading producer of dynamic random-access memory, or DRAM, and has become the world’s fourth-largest supplier behind Samsung Electronics, SK Hynix and Micron Technology. Demand for memory chips has accelerated as AI data centres, servers and advanced consumer devices require greater storage and computing capacity. Meanwhile, restrictions on China’s access to advanced foreign chipmaking equipment have increased the strategic premium attached to domestic suppliers. CXMT’s listing therefore represents both a commercial technology story and an industrial-policy story: investors are assigning significant value to companies capable of reducing China’s dependence on overseas semiconductor producers. Nevertheless, the memory industry remains highly cyclical, and CXMT still faces limitations in accessing leading-edge production equipment, making its post-listing valuation vulnerable to changes in chip prices, capacity and investor sentiment.

Chinese AI developers have produced a similar wave of paper wealth. Tang Jie, founder and chief technology officer of Z.ai, also known as Zhipu, held shares worth approximately HK$35.8 billion, or US$4.6 billion, based on the company’s latest market price. Zhipu and MiniMax, both listed in Hong Kong in January, have attracted investors seeking publicly traded exposure to China’s large-language-model industry. Their rallies have enabled the companies to raise substantial capital for model training, computing infrastructure, recruitment and international expansion. However, previous declines surrounding shareholder lock-up expirations show that these valuations can reverse sharply when more shares become available for sale or expectations about commercialisation weaken.

The contrasting fortunes do not necessarily indicate a permanent transfer of financial power from American technology leaders to Chinese entrepreneurs. Instead, they demonstrate how global capital markets are rapidly repricing exposure to AI, semiconductors, autonomous systems and space technology. The central financial lesson is that billionaire rankings increasingly measure ownership of volatile technological expectations rather than immediately accessible wealth. Public listings give investors access to emerging industries and give founders capital to expand, but they also expose both sides to daily changes in sentiment. Musk’s US$130 billion loss and the new fortunes created by CXMT, Zhipu and MiniMax are therefore two sides of the same phenomenon: technology markets can generate unprecedented wealth, but much of that wealth remains conditional on valuations that can change almost overnight.