TSMC: Recalculating U.S. Investment and Foundry Dominance - 2026.09.08

Hi, it’s Peanut, starting with the numbers—this time, let’s first recalculate whether TSMC’s U.S. investment and foundry dominance are really moving in the same direction. Taken together, reports from September 7 highlighted TSMC as a diplomatic and industrial pillar pursuing investment worth $265 Billion in the U.S., while also bringing cost variables such as 2nm competition and manufacturing automation into focus ^[1]. The company’s footprint is growing, but whether investment efficiency is keeping pace requires a separate calculation.

💼 U.S. Investment Is Both a Growth Card and a Burden

TradingView reported that TSMC’s $265 Billion U.S. investment is playing an important role in Taiwan’s semiconductor diplomacy ^[1]. What can be confirmed here is the investment scale and its geopolitical significance. However, this report alone cannot verify when the investment will translate into what kind of returns or how cash flow will change.

From a fundamental perspective, the larger the number, the more coldly it should be viewed. If expanding investment broadens the production base and external cooperation, capital deployment and execution burdens may also increase. Is that really the case? The key is whether the U.S. investment represents a qualitative expansion of foundry dominance or makes the cost structure heavier—something that follow-up results and utilization efficiency will have to show.

📉 73% Share, Between Dominance and Competitive Pressure

Another TradingView article analyzed whether to buy the stock based on the claim that TSMC maintained a 73% share of the foundry market ^[5]. This 73% must be treated only as a claim presented in that article, not expanded into a forecast or result directly confirmed by the company.

Even so, the question raised by this figure is clear. The assumption that TSMC’s current market position will hold exists alongside competitive pressure from Samsung Electronics and Arm’s 2nm cooperation. An article on Samsung Electronics and Arm’s partnership presented 2nm process yield as the key test ^[2]. In advanced processes, actual productivity matters more than the name. If a process announcement is a flashy menu, yield is closer to the number of plates that actually come out of the kitchen.

⚠️ New Variables in AI Connectivity and Manufacturing Automation

Reports also said that TSMC and Taiwan’s industry had launched a silicon photonics alliance to secure leadership in the AI era ^[3]. It was introduced as a move to broaden industry cooperation in next-generation optical communications technology linked to AI semiconductors. Compared with the repeated simple demand narrative, the new element is that this is technological cooperation aimed at addressing bottlenecks in AI data transmission.

There was also news that TSMC developed a centralized robotic system for semiconductor production ^[4]. Because this news directly touches production processes and manufacturing automation, it takes on added meaning when viewed alongside the U.S. investment. However, the development of a robotic system alone cannot confirm lower costs or improved profitability. Verifiable numbers will emerge only when its actual scope of application and productivity changes are disclosed.

🛑 Bearish Scenario Remaining for Short- to Medium-Term Swings

The bullish case connects market share, U.S. investment, and silicon photonics cooperation. On the other side are the 2nm yield race and the burden of executing large-scale investments. Even if TSMC widens its technological lead, whether profits and cash flow keep up with the pace of expanding investment is a separate issue.

When looking at TSMC, Peanut believes we should recalculate the capital and yields required to maintain its dominance before focusing on the word “dominance” itself. Even in short- to medium-term swings, a value trap remains possible if market expectations run ahead of earnings. It is still unresolved which will first be confirmed in the numbers: U.S. investment efficiency, 2nm yield, or the actual productivity of automated systems.

📰 Reference News (5)

1

TSMC's $265 Billion U.S. Bet Is Becoming Part of Taiwan's Chip Diplomacy - TradingView

TradingView · 2026.09.07

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2

Samsung Electronics·Arm Form 2nm Alliance… TSMC Chase Faces a Yield Test - Global Economic

글로벌이코노믹 · 2026.09.07

📰 View original

3

TSMC and Taiwan industry launch silicon photonics alliance to lead AI era - CHOSUNBIZ - Chosunbiz

Chosunbiz · 2026.09.07

📰 View original

4

TSMC Develops a 'Centralized Robotic System' for Semiconductor Production - Robot News

로봇신문 · 2026.09.06

📰 View original

5

Taiwan Semiconductor Retains 73% Foundry Share: Is the Stock a Buy? - TradingView

TradingView · 2026.09.07

📰 View original