In a remarkable turn of events, the demand for photonic chips has skyrocketed amid the ongoing AI optics boom, propelling Yuanjie Semiconductor Technology, based in China, into the spotlight. Over the past year, the company’s shares have surged by approximately 780%, resulting in significant financial gains for its founder, chairman, and CEO, Zhang Xingang.
At 56 years of age, Zhang, a U.S. citizen, has amassed an impressive fortune estimated at $1.7 billion, primarily derived from his stake in the Shanghai-listed company, according to estimates from Forbes. Following a notable rise in shares of optics counterparts Lumentum and Coherent in the U.S., Yuanjie’s stock approached its daily trading limit of 20% on the previous Friday.
While the company has not issued a public statement regarding these developments, the surge can be attributed to the increasing need for Yuanjie’s laser chips, which are essential for transmitting data in the form of light within AI data centres. These photonic chips are becoming increasingly vital as the demands of AI require advanced hardware capabilities.
In early March, Nvidia made headlines by announcing a substantial investment of $2 billion each in both Lumentum and Coherent. This investment is part of a multi-year strategic partnership aimed at bolstering research into advanced AI infrastructure products.
Shen Meng, managing director of boutique investment bank Chanson & Co. based in Beijing, highlighted the competitive landscape, stating, “Optical communication represents a bottleneck in the global AI arms race. Whoever invests more in boosting production capacity might end up getting more market share.” This sentiment is echoed among investors, particularly as Yuanjie, backed by Chinese tech giant Huawei, appears to be making significant plans for growth.
In early March, the company also announced its intention to pursue a separate listing in Hong Kong. The aim is likely to utilise any capital raised to expand production capabilities. In February, Yuanjie revealed a 1.3 billion yuan ($181.3 million) investment in a new production base located in the Xixian New Area of Shaanxi province, which also serves as its headquarters. Furthermore, two years prior, the chipmaker signalled its intent to invest $50 million in the U.S. to enhance its international presence.
Zhang Xingang’s background is noteworthy. He has previously worked in the United States before returning to China. Holding a Ph.D. in materials science from the University of Southern California, he began his career at fiber optic components maker Luminent in 2001. Following its merger in 2007 with China’s Fiberxon to form Source Photonics, which also develops components and transceivers for data centres, Zhang ascended to the role of research director.
However, his journey led him back to China after Source Photonics was sold in 2010 to private equity firm Francisco Partners. In 2013, he founded Yuanjie, and the company went public on the Shanghai Stock Exchange’s Nasdaq-style STAR Market in 2022, successfully raising $219 million.
Initially, Yuanjie faced challenges in its financial performance, primarily catering to the highly competitive telecommunications sector in China. However, with the rising demand driven by advancements in AI, the company has turned a corner. In the first nine months of 2025, the latest financial results available, sales surged by 115% year-on-year, reaching 383.2 million yuan. The company reported a net profit of 117 million yuan, a significant turnaround from a loss of 550,131 yuan during the same period the previous year.
Looking ahead, projections suggest that total sales may more than double to 506 million yuan for the entirety of 2025, with net profit anticipated to reach 138 million yuan, according to S&P Global.
Zhang is now among a growing group of billionaires emerging from the optics sector in China. Notably, Wang Weixiu, the founder of optical device maker Zhongji Innolight, joined this elite group in December. Shares of Innolight, which counts Yuanjie as a customer, have appreciated by 480% over the past year.