The next upward cycle for the semiconductor silicon wafer market is now taking shape.
This recovery is being driven by two powerful, parallel forces. First is the surging demand for epitaxial wafers, which are essential for advanced logic chips. TSMC, a key industry player, recently announced a massive capital expenditure plan of $52-56 billion, primarily for 2-nanometer chips and advanced packaging (CoWoS). This move signals a strong increase in production for high-performance chips, directly boosting the need for these high-quality wafers.
At the same time, the AI boom is creating huge demand for High-Bandwidth Memory (HBM). HBM production consumes about three times more polished wafer area per gigabyte compared to standard DDR5 memory. This intense consumption is rapidly drawing down inventories of polished wafers, creating another strong demand driver for the market.
However, the supply side cannot respond quickly to this rising demand. The primary reason is that most wafer production is already committed through Long-Term Agreements (LTAs), which lock in prices and volumes until around 2026 or 2027. Furthermore, even if companies wanted to expand, the lead time for critical manufacturing equipment is over six months, making it impossible to ramp up capacity in the short term. This supply rigidity is a key feature of the current market.
This dynamic creates a "volume before price" recovery pattern. We are already seeing shipment volumes increase—data from SEMI shows a 5.8% rise in 2025 shipments. However, revenue actually declined slightly, indicating that prices have not yet caught up. This is a direct result of the existing LTAs suppressing current prices. The real price increase is expected to occur around 2027, when negotiations for new LTAs begin and suppliers can adjust prices to reflect the strong demand.
In conclusion, while the market may seem quiet on the price front, the underlying conditions are set for a significant shift. The drivers have changed from the memory-led cycle of 2016-2017 to a new AI-led cycle, but the fundamental rhythm—volume recovering first, followed by price hikes dictated by LTA renewals—remains remarkably similar.
- Epitaxial (Epi) Wafer: A silicon wafer with an extra, ultra-pure layer of silicon grown on its surface. It's used for high-performance logic and microprocessor chips.
- Polished Wafer: A standard, highly polished silicon wafer that serves as the base substrate for a wide range of semiconductors, including memory chips like HBM and DRAM.
- Long-Term Agreement (LTA): A multi-year contract between a supplier and a customer that pre-defines sales volumes and pricing mechanisms, providing stability for both parties.