Understanding the rising importance of indium in the tech sector is crucial for investors looking to navigate the evolving landscape of artificial intelligence. The metal commonly unknown to many is emerging as a vital component in the AI revolution due to its role in high-speed optical chips essential for data centers. China’s increased regulation of indium exports has considerable implications.
China currently controls about 70% of the global indium supply, making its export policies pivotal to the international tech supply chain. When China slows down export approvals for indium, it creates ripple effects across the technology sector worldwide.
This situation began in February 2025, when China added indium phosphide, a semiconductor material vital for manufacturing optical chips, to its export control list. As a result of these restrictions, international companies relying on Chinese indium have experienced significant delays in securing their supplies. The price of 6-inch InP wafers skyrocketed by around 250%, jumping from approximately $1,429 to about $5,000 since the implementation of these controls.
The urgency of the situation prompted discussions at the highest levels of government. In May 2026, a US delegation, led by President Donald Trump, included Coherent’s CEO to address supply concerns regarding indium. Coherent, a major producer in this space, highlights the wider stakes.
Indium’s significance extends beyond AI. It plays a critical role in various electronic applications, including LCD displays and soldering materials. The burgeoning AI sector has only heightened this importance, turning indium phosphide into a strategic chokepoint in tech supply lines. This reliance makes it challenging for companies to source alternatives.
For investors, the implications are profound. Soaring wafer prices feed into the costs of optical transceivers and, ultimately, infrastructure budgets of firms like Microsoft, Google, Amazon, and Meta, which are heavily investing in data center expansions. As prices rise dramatically, these companies face the dual challenge of rising costs and potential supply instability, dependent on geopolitical tensions.
Going forward, monitoring how governments respond is vital. It remains to be seen if Western nations will accelerate investments in alternative sources for indium or advancements in recycling. Additionally, we may observe a shift among chip designers toward materials that minimize reliance on indium, such as silicon photonics. These developments could reshape the landscape for investors in technology and resources moving ahead.