Understand any stock in simple English
Enter a ticker to learn what the company does and how it makes money.
IQE makes the specialty semiconductor wafers that other companies use to build chips for phones, lasers, and other advanced electronics.
IQE makes the raw material that sits underneath some of the most advanced electronics in the world. It grows crystalline layers of compound semiconductors — materials like gallium arsenide and indium phosphide — onto wafers, which are thin discs that chipmakers then turn into finished devices. These materials do things ordinary silicon cannot do well, like emit light or handle very high-frequency signals, so they show up in phone radios, optical fiber networks, laser systems, and infrared sensors.
The business splits into a few main markets. In wireless, IQE's wafers go into the radio chips inside smartphones and network equipment. In photonics, they feed into lasers and optical components used in data centers and telecom networks. There is also a silicon-based business, where IQE supplies specialty wafers for advanced silicon chips. The company does not build the final chips itself; it sells the engineered wafers to chipmakers and device manufacturers, who pay for consistent quality and the ability to hit very tight technical specs. IQE is headquartered in Cardiff, Wales, and it has grown into one of the larger independent suppliers of compound semiconductor wafers. That independence is part of its pitch: customers who compete with each other can buy from a supplier that is not tied to a rival. But the business is cyclical and capital-hungry. Building and running wafer fabrication plants costs a lot of money, and when demand for phones or network gear softens, orders can fall quickly. The company has had stretches of losses and heavy spending, and its share price has been volatile as investors waited for a recovery in its end markets.
A big part of the IQE story is about betting on the next wave of technology. The company has invested in capacity for things like gallium nitride power devices and advanced photonics, betting that demand for faster communications and more efficient power electronics will grow. Whether those bets pay off depends on how quickly customers adopt the technology and how much pricing pressure comes from larger rivals. It is a real, technically deep business, but one where the profits swing with the chip cycle and the cost of keeping those factories running.
Saved answer · last researched 15 Nov 2026