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Both companies are pure-play foundries that make chips for other companies’ designs, so they go after the same chipmakers looking for outside manufacturing capacity. UMC mainly sells wafer fabrication services and also works on specialty and logic processes, which overlaps with TSMC’s foundry business even though TSMC is bigger and more advanced on leading-edge chips.
As of May 4, 2026
For informational purposes only.
Today TSM edged up about 1% to roughly $402. That’s a small move on its own, but it happened on a day when a lot of stocks were red and overall market nerves were ticking higher, which makes the gain more meaningful. Trading volume was a bit lighter than usual, so this looked more like a calm “buyers still interested” day than a big surge.
In plain terms: the current story is still “AI boom + very profitable business,” and nothing in today’s action or recent news changes that. The stock is already up a lot over the past year and sitting not too far below its recent highs, but buyers haven’t walked away. They’re just not chasing it aggressively at this second.
If you’re watching from the sidelines, today’s move says: this is a strong, in-demand stock that’s pausing near the high end of its recent range, not one that’s suddenly fallen out of favor.
Recent articles keep hammering a few points:
