Here is the single most useful thing to know before you open a TSMC earnings release: by the time the company hosts its quarterly investor conference, essentially the entire quarter’s revenue is already public, because Taiwan-listed companies must file monthly sales by the 10th of the following month. The quarterly event is therefore not a revenue reveal — it is a guidance and mix reveal, and the items that move the stock are gross-margin guidance, the capital expenditure plan, the advanced-node revenue mix, and the share of revenue coming from AI-driven high-performance computing. Read those four in that order and you will extract most of the signal in a fraction of the time.
Interest in this mechanic tends to spike around reporting season. As of early October 2026, the September monthly revenue filing is due by October 10, and foreign institutions logged NT$30.86 billion of net purchases in Taiwan equities on September 30. The rest of this guide, however, is timeless: it is about how the disclosure machinery works, in any quarter.
The reporting rhythm: monthly filings first, quarterly conference second
TSMC’s disclosure calendar has two layers, and understanding the gap between them is the core skill.
- Monthly revenue filings. Like all Taiwan-listed companies, TSMC reports net revenue for each month by the 10th of the following month, filed on MOPS (Gongkai Zixun Guancezhan, the Market Observation Post System — Taiwan’s official corporate disclosure platform) and posted to the company’s investor relations site. Three filings per quarter mean the quarterly top line can be summed in advance to within rounding and FX-translation noise.
- The quarterly investor conference. Full results — gross margin, platform mix, node mix, guidance — arrive at a webcast investor conference held several weeks after the quarter closes. As a dated example of the format: the Q2 2026 conference was held on July 16, 2026, starting at 14:00 Taipei time. Materials and a replay are posted on TSMC’s IR site.
Note the time of day. The Taiwan Stock Exchange (TWSE) cash session closes at 13:30 Taipei time, so the local market is already shut when the conference begins. The first tradable reaction happens in the US-listed ADR that evening (Taipei time), and the Taipei share — ticker 2330 — responds the following morning. More on that asymmetry below.
The five things to read, in order
1. Revenue by platform: AI/HPC versus smartphone
TSMC breaks revenue into platforms — high-performance computing (HPC, which houses AI accelerators and server CPUs), smartphone, IoT, automotive, and others. The structural story of recent years has been HPC overtaking smartphone as the dominant platform, driven by AI accelerator demand and the advanced packaging (CoWoS) that pairs those chips with high-bandwidth memory. What to do with the table:
- Track the HPC share of revenue quarter over quarter, not just its growth rate. A rising share tells you the AI cycle is still absorbing capacity; a stalling share with smartphone picking up tells you the mix is rotating, which has margin implications.
- Watch smartphone for seasonality, not trend. Smartphone revenue is lumpy around major handset launches; a sequential jump in the second half of the year is normal, not news.
2. Gross-margin guidance — and the currency trap
Management guides the next quarter’s revenue and gross margin as ranges: revenue guidance is stated in US dollars, gross margin is guided as a percentage range, and reported financials are in New Taiwan dollars. Most of TSMC’s billing is in USD, so the USD/TWD rate (31.85 at the September 30, 2026 close, for reference) directly moves reported NT$ revenue and margin. The most common retail mistake in reading TSMC results is calling a “miss” or “beat” that is actually an FX translation effect: a stronger TWD depresses reported NT$ figures even when the underlying USD business performed exactly as guided. Always check the exchange-rate assumption stated alongside guidance before judging the quarter.
3. Capex plans
TSMC’s annual capital budget runs to tens of billions of US dollars, and updates to it are among the most market-moving lines of any call — for TSMC’s suppliers and equipment makers even more than for TSMC itself. Two reading rules:
- A raised capex budget is management’s highest-conviction demand signal, because the company commits capital years ahead of revenue.
- A trimmed or deferred budget is ambiguous: it can reflect demand caution, but it can equally reflect tool-delivery timing or construction schedules. Listen for which explanation management gives before drawing conclusions about the cycle.
4. Advanced-node mix: 3nm and 2nm
The results deck discloses revenue by process node. The share contributed by the leading nodes (3-nanometer, and 2-nanometer as it ramps) is the cleanest public measure of two things at once: customer willingness to pay for the newest technology, and the maturity of the ramp. Early in a node’s life, its growing share can actually dilute gross margin, because new fabs run below optimal yield and utilization; management typically flags this dilution explicitly. So read node mix together with margin guidance: a rising leading-node share plus steady margin guidance is a strong combination, since it means the ramp is being absorbed without profitability damage.
5. The housekeeping items worth 60 seconds
Inventory days, the revenue share of the top customers (disclosed annually), and any commentary on overseas fab economics. None of these usually moves the stock on the day, but they compound into the long-term margin story.
Why the earnings “surprise” is smaller than in other markets
In the US, a quarterly revenue number can be a genuine shock. In Taiwan, the monthly filing regime means the top-line surprise is largely pre-released: anyone summing the three monthly filings knows the quarter’s revenue weeks before the conference. The practical consequences:
- The stock reacts to monthly filings too. The filing due by the 10th of each month is a mini-event; a strong final month of a quarter often gets priced immediately, leaving less for conference day.
- Conference-day moves are about guidance and margins, because that is the only genuinely new information. A “revenue beat” headline on TSMC’s quarterly release is usually stale news dressed up as a surprise.
- Consensus drift matters. Analyst estimates converge toward the monthly run-rate as the quarter progresses, so the useful comparison on conference day is guidance versus expectations, not results versus estimates.
Worked example: reading the ADR premium, step by step
TSMC trades in two places: as 2330 on the TWSE in New Taiwan dollars, and as the ADR (American Depositary Receipt — a US-listed certificate representing foreign shares) under ticker TSM in New York, where one ADR represents five Taipei shares. The two prices are linked but not arbitrage-equal, because converting between them is restricted in practice (limited fungibility). Here is an actual calculation using verified closes, pairing the ADR and Taipei closes from the same calendar date (September 30, 2026):
| Step | Figure | Source / date |
|---|---|---|
| 1. TSM ADR close | US$456.19 | US session, 2026-09-30 |
| 2. Divide by 5 (ADR ratio) | US$91.24 per Taipei-share equivalent | — |
| 3. Convert at USD/TWD 31.85 | ≈ NT$2,906 implied price | FX as of 2026-09-30 close |
| 4. Compare with Taipei close | NT$2,480 | TWSE, 2026-09-30 |
| 5. Implied premium | ≈ 17% | — |
Be precise about which closes you pair. The ≈17% above compares the two September 30 closes; measuring the same ADR close against the next Taipei session’s close (October 1, 2026) instead gives about 16.6%. The pairing choice shifts the figure by a point or so, which is one more reason to compute the premium the same way every day rather than treating any single reading as exact. How to interpret a number in that zone: it sits inside the roughly 15–25% band the ADR premium has occupied in recent years, so the level itself is not a signal. The level persists because foreign access to the Taipei line involves frictions, while the ADR offers unlimited dollar-denominated access — note that foreign investors already held 69.18% of TSMC’s Taipei shares as of end-September 2026, among the highest of any major Taiwan listing. What carries information is the day-to-day change in the gap: a sharply widening premium around results suggests global investors are re-rating the stock faster than the local market can respond (or than local limits allow), while a compressing premium suggests the enthusiasm is fading at the margin. Also mind the sessions: the ADR close and the Taipei close are from different time zones, so a same-day comparison always embeds several hours of news that only one market has traded on.
TAIEX versus the ADR: who reacts first, and why they differ
Because the investor conference begins after the Taipei close, the reaction sequence around results is fixed: the ADR reacts first (US hours), and the Taipei line and the TAIEX (Taiwan Capitalization Weighted Stock Index, the main Taipei benchmark — 47,940.13 at the completed September 30, 2026 session) react together the next morning, since 2330’s heavy index weight transmits the stock’s move market-wide the moment Taipei trading opens. Three structural reasons the magnitudes differ:
- Price limits. Taipei-listed shares face a 10% daily up/down price limit; the ADR has none. On extreme news the ADR can express the full repricing in one session while the Taipei line takes longer.
- Index drag. TSMC is by far the largest TAIEX constituent, so a TSMC-specific move mechanically moves the index — but the index also contains non-semiconductor sectors that dampen it. Never read a TAIEX move as a pure TSMC verdict.
- Different investor bases. The ADR prices global AI sentiment in dollars; the Taipei line adds local institutional flows — the san da faren (“three major institutional investors”: foreign investors, investment trusts, and dealers), whose daily net figures the TWSE publishes each afternoon — plus retail margin activity. Divergence between the two lines on the day after results is itself a readable signal about which investor base is driving.
FAQ
Where do I find TSMC’s results and the monthly revenue filings?
Quarterly decks, webcasts, and replays are on TSMC’s investor relations site (investor.tsmc.com). Monthly revenue and all statutory filings are on MOPS (emops.twse.com.tw), the official disclosure system — filings there are the legally authoritative version.
Is the quarterly release pointless if monthly revenue is already public?
No — it is where margins, platform and node mix, capex, and forward guidance appear, none of which is in the monthly filings. The monthly data only removes the top-line surprise; the quarterly conference supplies everything that determines profitability and the forward view.
Should I buy the Taipei shares instead of the ADR because they are “cheaper”?
The gap is structural, not a mispricing you can harvest: limited fungibility means it does not reliably close, and it has persisted at roughly 15–25% for years. The two lines also differ in currency exposure, trading hours, and dividend mechanics. Treat the premium’s changes as a sentiment gauge, not its level as a discount. (Nothing here is investment advice.)
Why do TSMC’s reported numbers sometimes diverge from its own guidance?
Most often it is currency: revenue guidance is set in US dollars at a stated USD/TWD assumption (with gross margin guided as a percentage range), while reported accounts are in NT dollars. Check the actual average exchange rate for the quarter against the guidance assumption before concluding the business over- or under-delivered.
Sources
- TSMC Investor Relations — quarterly results, investor conference webcasts and decks (investor.tsmc.com)
- MOPS / Market Observation Post System — monthly revenue and statutory filings (emops.twse.com.tw)
- Taiwan Stock Exchange — institutional flow data, foreign ownership, market statistics (www.twse.com.tw/en, openapi.twse.com.tw)
- TAIFEX — futures and options positioning data (www.taifex.com.tw)
Disclaimer: This is an information and analysis publication, not investment advice. See our Methodology for data sources, standards, and our corrections policy.