Taiwan Semiconductor Manufacturing Company Limited (NYSE:TSM) is expanding overseas production while retaining a highly profitable manufacturing base. The investment question is how much lower-margin capacity it can absorb without weakening the earnings that support the stock’s valuation. Customers may value geographic diversification even when the first units made in a new factory cost more.
TSMC reported a 67.7% gross margin and a 60.3% operating margin in the second quarter. Those levels provide a substantial cushion. At the September 30 market-data snapshot, the stock nevertheless traded at roughly 29 times trailing earnings and 57 times trailing free cash flow. The price therefore deserves a test against both lower margins and continued factory spending.
Spending on a better factory comes before proof of its returns. Our analysis of TSMC’s next manufacturing transition and the different payoff timelines for supplier and foundry examines that gap.
Image: TSMC
On the demand side, our analysis asks why TSMC can collect revenue even when competing AI chip designs trade market share.
Two margin pressures need separate treatment
Management described overseas-factory dilution starting at about two to three percentage points of gross margin and moving toward three to four points in later years. It separately expected the N2 ramp to dilute gross margin by three to four points in the second half of 2026. The two pressures have different causes and timelines. They should not be stacked mechanically on top of management’s quarterly margin guidance as though that guidance excluded known costs.
On second-quarter revenue of NT$1.27 trillion, a three-point gross-margin reduction represents approximately NT$38.1 billion of gross profit. Four points represent NT$50.8 billion. Relative to reported net income of NT$706.6 billion, those pretax amounts equal about 5.4% and 7.2%, respectively. Actual net-income effects would also depend on taxes, operating costs, revenue growth and other income.
This sensitivity suggests that overseas dilution alone need not destroy the profit base. The more consequential scenario combines persistent cost pressure with slower demand or lower factory utilization. Fixed manufacturing costs make that combination harder to absorb than a margin calculation holding sales constant.
Insider Monkey’s hedge fund database showed 249 TSMC holders in Q2 2026, up from 234 in Q1. Fisher Asset Management increased its share position 2% to 18,866,198; Coatue reduced its position 4% to 8,914,995. Those long-side holdings predate the July 16 results and do not disclose the managers’ reasons.
Earnings quality and capital spending both matter
Reported quarterly EPS was NT$27.25, but NT$2.24 came from a Vanguard-related disposal and valuation gain. Excluding that contribution produces NT$25.01 as a simple earnings-quality adjustment, roughly 8% below reported EPS. It is not a complete normalized earnings estimate. It prevents a nonrecurring contribution from silently supporting a manufacturing valuation.
TSMC also raised its annual capital-spending outlook to $60 billion to $64 billion. More capacity can generate future sales, but cash leaves before the full revenue benefit appears. That helps explain why the free-cash-flow multiple was much higher than the earnings multiple at the market-data snapshot.
At the September 15 settlement, the US-listed shares had short interest of 27,789,695 and 2.84 days to cover. That US listing snapshot is distinct from worldwide ownership and the Taiwanese ordinary-share market.
For an illustrative valuation stress, a 10% reduction in sustainable earnings would turn a 29-times multiple into about 32 times at an unchanged stock price. A 20% reduction would lift it to roughly 36. Recovering those earnings through more sales requires competitive manufacturing, favorable product mix and high utilization, not simply a larger installed capacity base.
The bull case is that leading processes command enough demand and pricing to offset overseas costs, while geographically diversified capacity strengthens customer relationships. The bear case is that new factories remain expensive and underused just as process transitions require more capital. In that outcome, earnings and free cash flow would weaken together.
Taiwan Semiconductor Manufacturing Company Limited has enough profitability to carry some overseas dilution. The investment case depends on how efficiently the new capacity fills and what cash remains after process investment. Normalized manufacturing earnings and utilization deserve more weight than a quarter aided by a disposal gain.
