TSMC demand and supply stress

Taiwan Semiconductor Manufacturing just posted March revenue of about NT$415.19 billion, up 30.7% from February and 45.2% from a year earlier, which is the kind of jump you get when the biggest artificial-intelligence chip customers are all trying to ship at once. For the full January-through-March quarter, Taiwan Semiconductor Manufacturing reported NT$1.134 trillion in revenue, up 35.1% from a year earlier, and its investor page shows first-quarter sales of US$34.6 billion to US$35.8 billion were above the guidance it gave in January. That sounds like a company with no problems. The catch is that the choke point is no longer just making the chips on silicon wafers, but packing those chips together afterward in the advanced modules used for artificial-intelligence processors. Advanced packaging is the part where separate chip pieces get stacked or linked on a shared base so they can act like one giant processor. It is closer to assembling a high-rise out of finished rooms than pouring one giant block of concrete. The packaging system drawing the most attention is called Chip-on-Wafer-on-Substrate, which puts multiple chip parts and high-bandwidth memory close together on one platform. That is the layout used by many top-end artificial-intelligence accelerators because moving data a few millimeters is much faster than moving it across a circuit board. Taiwan Semiconductor Manufacturing has spent years building a supplier-verification system around this work, and DigiTimes reports that Samsung Electronics, Intel, Rapidus, and Semiconductor Manufacturing International Corporation are now studying or adopting similar methods. When one company’s checklist becomes the model for its rivals, it usually means the bottleneck has shifted from design to execution. That system matters because advanced packaging depends on a long chain of substrates, chemicals, tools, testing, and specialty materials, and one weak supplier can slow the whole line. A chip factory can add machines, but it cannot instantly create a trusted network of packaging vendors that all meet the same yield and reliability targets. The strain is visible enough that Digital Today says Taiwan Semiconductor Manufacturing’s dominance is showing cracks, not because demand is weak, but because packaging bottlenecks are limiting how much of that demand it can convert into shipped product. In other words, the order book is full while the final assembly lane is crowded. That is where Samsung Electronics sees an opening. Samsung has been pitching a package deal that combines its 2-nanometer foundry process with its own 2.5D packaging, called Interposer-Cube S, so customers can buy manufacturing and packaging from one place instead of waiting for space in Taiwan Semiconductor Manufacturing’s line. The market backdrop helps explain why even a small opening matters. Counterpoint Research said Taiwan Semiconductor Manufacturing held 72% of the pure-play foundry market in the third quarter of 2025, while TrendForce data cited by Taipei Times put its full-year 2025 share at 69.9%, so any capacity shortfall at the leader sends customers looking for alternatives fast. So the story in April 2026 is not that Taiwan Semiconductor Manufacturing is slowing down. It is that the world’s biggest chipmaker is growing so fast that the hardest part of the business is becoming the last step, and once packaging becomes the scarce resource, rivals do not need to beat Taiwan Semiconductor Manufacturing everywhere to win business.