[ASX] ASE Technology: Q3 2026 Earnings Preview on Advanced Packaging Capacity

ASE Technology Holding is the world's largest independent semiconductor packaging and testing provider, and it also runs an electronic manufacturing services (EMS) business through its USI group; the company plans to hold its earnings call on 2026-10-29 to report results for the third quarter of 2026, ending September 30, 2026 [1]. In the latest disclosed quarter, the second quarter of 2026, consolidated revenue was NT$191.06 billion, up 26.7% year over year and 10.0% sequentially, with a 21.0% gross margin, an 11.1% operating margin and net income attributable to the parent of NT$21.07 billion, up 180% [2]. Management's July 30 outlook guided third-quarter consolidated revenue up 21%-22% sequentially (roughly NT$231.19-233.10 billion on the second-quarter base), consolidated gross margin of 20.5%-21.5% and operating margin of 11.5%-12.5%; within that, assembly, testing and materials (ATM) revenue is guided up 11%-13% with a 28%-29% gross margin, and EMS revenue up about 40% with a 3.2%-3.4% operating margin [3]. Seven analysts compiled by Drillr put consensus third-quarter revenue at NT$229.60 billion, slightly below the low end of company guidance, while their consensus EBIT of NT$30.99 billion implies a margin of about 13.5%, above the company's operating-margin guidance, possibly on a different basis [4]. Drillr's earnings calendar shows a revenue estimate of US$7.173 billion and earnings of US$0.339 per ADS for the same quarter [1].

Three things matter most in this ASE Technology Q3 2026 earnings report. First, whether ATM revenue beats the top of the 13% sequential guidance: July and August ATM sales totaled NT$98.81 billion, including NT$51.29 billion in August alone, up 53.1% year over year [5][6], and because management attributes the near-term growth limit to the pace of tool installation and factory construction [7], the quarter directly tests whether the new advanced packaging capacity arrived on schedule. Second, whether ATM gross margin rises from 27.3% in the second quarter to the guided 28%-29% [8]: consolidated depreciation and amortization already climbed from NT$16.53 billion a year earlier to NT$20.00 billion [9], and because EMS component pass-through will make the consolidated gross margin look flat, whether profit keeps outgrowing revenue depends on the ATM segment itself. Third, whether the funding gap for the expansion narrows: second-quarter operating cash flow covered only about 59% of payments for property, plant and equipment, and interest-bearing debt rose from NT$265.33 billion to NT$306.23 billion in a single quarter [9], so whether higher third-quarter profit stops the borrowing from growing decides whether the financial strain of the build-out is easing or accumulating.

Company Background and Business Structure

ASE Technology Holding is a holding platform formed through a statutory share exchange on April 30, 2018, which made Advanced Semiconductor Engineering (ASE) and Siliconware Precision Industries (SPIL) wholly owned subsidiaries at the same time, while its USI group runs the electronic manufacturing services business [10]. The company is listed in Taiwan (3711) and on the New York Stock Exchange (ASX), with one ADS representing two common shares. Since 1997 it has maintained a strategic alliance with TSMC, which designates it as a non-exclusive preferred provider of packaging and testing services for semiconductors that TSMC manufactures [11].

Assembly, testing and materials (ATM) is the group's profit engine, and the company charges chip designers and integrated device manufacturers a service fee based on processing volume. Customers send wafers for bumping, flip chip, wafer-level packaging, system-in-package, wire bonding, wafer probing and final testing; within that, leading-edge advanced packaging and testing (LEAP), built on redistribution layer (RDL), 2.5D/3D and fan-out technologies, serves AI accelerators, ASICs and HBM and requires large amounts of dedicated equipment and new floor space [12]. In 2025 packaging revenue was NT$308.34 billion, up 17.8%, and testing revenue was NT$71.90 billion, up 31.8%; together they made up about 58.9% of the group's NT$645.39 billion in operating revenue [13].

By the second quarter of 2026, ATM had become even more dominant: on a consolidated basis it accounted for 65.5% of revenue [2], and its segment operating income of NT$19.78 billion was about 94% of consolidated operating income [8]. Second-quarter ATM revenue by application was 41% communications, 30% computing and 29% automotive, consumer and other; by type it was 49% bumping, flip chip, wafer-level packaging and system-in-package, 24% wire bonding and 19% testing [8]. The rising computing share shows AI and high-performance computing work taking share from communications.

The EMS business has economics that are entirely different from ATM, because USI builds modules, boards and systems for brand customers and largely passes component costs through to them. In the first quarter of 2026, raw material costs equaled 78% of EMS revenue [14], so the business has large revenue and a gross margin of roughly 9%; 2025 EMS revenue was NT$257.19 billion, down 5.2%, or about 39.9% of the group [13]. Second-quarter 2026 EMS revenue by application was 30% communications, 28% consumer, 16% computing, 16% industrial and 8% automotive [15]. ATM's costs, by contrast, are dominated by equipment depreciation, labor and facilities, and the 20-F explicitly describes testing and leading-edge advanced packaging as businesses with relatively high fixed costs [16].

Financial History and Current Position

On an annual basis, the company has moved past the 2023 semiconductor downturn, and its 2025 gross margin returned to the upper part of its post-2022 range without regaining the 2022 level. Consolidated operating revenue was NT$670.87 billion in 2022 with a gross margin of about 20.1%, fell to NT$581.91 billion in 2023 with a gross margin of about 15.8% [17], and was NT$595.41 billion in 2024 with a gross margin of about 16.3% [18]. In 2025 revenue was NT$645.39 billion, up 8.4%, with gross profit of NT$114.19 billion (a 17.7% margin), operating profit of NT$51.42 billion and pre-tax profit of NT$51.30 billion [19]. Quarterly consolidated gross margin rose from 16.8% in the first quarter of 2025 to 19.5% in the fourth, when packaging gross margin reached 24.3% and testing gross margin 36.0% [18].

The 2025 cash flow statement already showed how much cash the expansion absorbs. Operating cash flow for the year was NT$142.25 billion against NT$164.64 billion of payments for property, plant and equipment, leaving free cash flow of about negative NT$22.4 billion, while the company also paid NT$23.03 billion in dividends [19]. By quarter, equipment capital expenditure was US$892 million, US$992 million, US$779 million and US$733 million, about US$3.396 billion for the year [9]. Depreciation, amortization and rental expense also rose from 9.1% of operating revenue in 2024 to 9.6% in 2025, which the 20-F attributes to higher capital expenditure [16].

In 2026, revenue and profit have both accelerated, with profit growing much faster than revenue. First-quarter consolidated revenue was NT$173.66 billion, up 17.2% year over year and down 2.4% sequentially [14]; second-quarter revenue was NT$191.06 billion with a 21.0% gross margin and an 11.1% operating margin, and net income attributable to the parent of NT$21.07 billion compared with NT$7.52 billion a year earlier and NT$14.13 billion in the first quarter, for basic earnings of NT$4.80 per share (US$0.304 per ADS) [2]. By segment, second-quarter ATM revenue was NT$126.15 billion, up 36%, with a 27.3% gross margin and a 15.7% operating margin [8]; EMS revenue on the USI basis was NT$65.79 billion, up 11.9%, with an 8.9% gross margin and a 2.4% operating margin [15]. In US dollar terms, first-half consolidated revenue rose 24% and ATM revenue rose 35% [20].

The balance sheet took on noticeably more leverage in the first half, while sales in the first two months of the third quarter kept strengthening. First-half operating cash flow was NT$83.40 billion, payments for property, plant and equipment were NT$123.94 billion and net proceeds from borrowings and bonds were NT$39.94 billion; at the end of June interest-bearing debt was NT$306.23 billion, cash was NT$91.29 billion and the net debt to equity ratio was 0.47 [9], up from 0.40 at the end of March and 0.46 at the end of 2025 [21]. Reported third-quarter consolidated monthly sales were NT$73.78 billion in July and NT$82.25 billion in August (up 45.7% year over year and the first month above NT$80 billion), while ATM monthly sales were NT$47.52 billion in July and NT$51.29 billion in August (up 53.1%) [5][6].

Operating Model

ATM revenue is currently set by available capacity rather than by demand. Consolidated revenue is the sum of ATM (packaging, testing and direct materials), EMS and other revenue; ATM recognizes revenue by processing volume once packaging and testing are complete, so the quarterly increment is roughly new usable capacity times utilization times price. Management said blended capacity utilization was 80%-85% in the second quarter, with wire bonding, traditional advanced packaging and test capacity running near full, and that near-term growth is limited by how fast new tools can be installed and factories built [7]. In the second quarter the ATM segment's packaging revenue was NT$100.32 billion and testing revenue NT$23.67 billion, and ATM equipment capital expenditure rose from US$963 million in the first quarter to US$1.646 billion [8]; such spending typically turns into revenue with a lag of one to three quarters.

Operating profit depends almost entirely on ATM gross margin, which is set by three forces together: utilization, pricing and the depreciation ramp. Operating profit equals ATM gross profit plus EMS gross profit minus R&D and selling, general and administrative expense; in the second quarter ATM R&D expense was NT$8.38 billion and SG&A NT$6.33 billion [8]. ATM gross margin rose from 26.3% in the fourth quarter of 2025 [14] to 27.3% in the second quarter of 2026, and management said the fourth-quarter figure could exceed the company's prior 30% structural ceiling [7]. New equipment starts depreciating as soon as it is placed in service, and there can be a lag before it reaches high utilization [16], so the direction in which expansion moves gross margin depends on whether depreciation or utilization arrives first. Consolidated gross margin is a revenue-weighted blend of the two businesses, so when EMS pass-through revenue swells, the consolidated margin can stay flat even as ATM margin rises, which is why the third-quarter guidance of 20.5%-21.5% sits close to the second quarter's 21.0% [3].

The key to the cash model is that capital spending comes before the return, and borrowing fills the gap. Operating cash flow is roughly net income plus depreciation and amortization (NT$20.00 billion in the second quarter) plus working-capital changes, while investing cash flow is dominated by equipment and buildings. On the second-quarter call management raised 2026 capital expenditure guidance by US$2 billion to US$10.5 billion [7], after first-half spending of US$2.7 billion on machinery and US$1.4 billion on buildings, facilities and automation [20]; on the first-quarter call management said this year's funding gap would mostly be covered by additional borrowing and that capital spending would likely continue into next year [22]. The faster the expansion, the earlier depreciation and interest-bearing debt rise, while revenue and cash returns lag by one to three quarters.

Industry and Competitive Position

ASE Technology is the largest independent packaging and testing company with the broadest process coverage, but competition comes from three directions. The first is other independent packaging and testing houses, and the second is integrated device manufacturers with in-house capability, which continuously benchmark the company against their own operations; the third is foundries that have invested heavily in advanced packaging capacity and have already won some customers [23]. The EMS business likewise faces large-scale manufacturers that can respond quickly to market changes [23].

The company's demonstrable advantage lies in leading-edge advanced packaging and test capacity, and its current constraint is that capacity itself. In its 20-F the company presents itself as a leader in bringing advanced ASIC and HBM products to market through RDL, 2.5D/3D and fan-out solutions, with co-packaged optics processing capability [12]. Management said 2026 LEAP services revenue is tracking ahead of the earlier US$3.5 billion guidance [20] and is targeting a doubling in 2027; the company is running 13 greenfield factory projects and 8 brownfield renovations at once, and its fully automated 310x310 panel-level packaging line is scheduled to start production in the first quarter of 2027 [7]. Management also acknowledged that competing packaging technologies such as Intel's EMIB could take share [7].

Customer concentration is the constraint on the company's competitive position that deserves the most attention, and the available materials cannot quantify its share against peers. The five largest customers accounted for about 48.0%, 48.4% and 46.5% of operating revenue in 2023, 2024 and 2025, and one customer (including OEM work done on its behalf) exceeded 10% in each year [11]. In the first quarter of 2026 the top five ATM customers made up 43% of ATM revenue, and the top five EMS customers 64% of EMS revenue (70% in the fourth quarter of 2025) [14]. Because quarterly reports do not break out LEAP revenue and utilization is given only as a range, the available materials do not allow a direct quantitative comparison of the company's advanced packaging share with foundries or other packaging houses.

Core Debates

With July and August ATM sales already running ahead of guidance, can the third quarter beat 13% sequential growth and show the new capacity is coming online on schedule?

This debate decides whether third-quarter revenue can beat guidance, because ATM contributes about 94% of consolidated operating income and management attributes the growth bottleneck to the pace of tool installation and factory construction rather than to demand [7]. Quarterly ATM revenue is the most direct test of whether the 21 expansion projects are turning into output on time, and it also bears on whether the full-year targets of 35% growth in US dollar ATM revenue and more than US$3.5 billion of LEAP services revenue are met [20].

The current evidence shows ATM growth running above guidance for two quarters in a row. Second-quarter ATM revenue was NT$126.15 billion, up 12.2% sequentially [24], above the company's earlier guidance of 9%-11% [22]; testing revenue rose 42% year over year, the computing share rose from 24% a year earlier and 27% in the first quarter to 30%, and the tester count rose from 6,797 a year earlier and 7,585 at the end of the first quarter to 8,348 [8]. July ATM sales were NT$47.52 billion, up 49.5% year over year, and August sales NT$51.29 billion, up 53.1%; the two months together came to NT$98.81 billion, about 70.6% of the roughly NT$140.02 billion low end of third-quarter guidance [5][6][3]. Management also raised its full-year growth estimate for the general business from 13% to 20% [20].

The financial transmission is clear, but the source of the growth is not yet separated. Equipment spending and completed factories first create usable LEAP and test capacity, processing volume (utilization times capacity) times price then yields ATM segment revenue, and because ATM is about 65% of consolidated revenue it drives most of the consolidated growth rate. An alternative explanation is that the strong monthly growth comes mainly from a fully loaded general business and price increases, and that the pace of LEAP tool installation is the real variable for September and the fourth quarter; because quarterly reports do not break out LEAP revenue, readers can judge this only indirectly through the computing share and the tester count.

The third-quarter report can directly confirm or weaken the explanation that demand exceeds capacity. The points to watch are whether ATM segment revenue reaches at least about NT$142.55 billion, whether the computing share stays above 30%, whether the tester count keeps rising, and whether September ATM sales hold near the August level. If third-quarter ATM revenue falls below about NT$140.02 billion, or the computing share slips, the demand-exceeds-capacity explanation will need to be scaled back.

As large amounts of new capacity start depreciating, can ATM gross margin still climb to the guided 28%-29%?

This debate decides whether profit can keep growing faster than revenue. Second-quarter net income attributable to the parent rose 180% year over year [2], driven mainly by ATM gross margin climbing from 21.9% a year earlier to 27.3% [8]; management guided 28%-29% for the third quarter and said the fourth quarter could break 30% [3][7], and whether those two steps happen decides whether the profit leverage continues.

Margin improvement has now run for a year, but depreciation is accelerating at the same time. ATM gross margin was 26.0% in the first quarter, and the second quarter's 27.3% beat the 26%-27% guidance [22]; ATM operating margin rose from 9.5% a year earlier and 14.1% in the first quarter to 15.7% [8], and consolidated operating margin was 11.1%, versus 10.1% in the first quarter and 6.8% a year earlier [2]. Management described a favorable pricing environment, with wire bonding and testing running near full [7]. Meanwhile consolidated depreciation and amortization rose from NT$16.53 billion a year earlier to NT$20.00 billion, and property, plant and equipment grew from NT$459.50 billion to NT$517.82 billion within one quarter [9].

The margin transmission pits utilization and pricing against depreciation, and which side wins is not yet settled. Utilization spreading fixed costs and price increases in LEAP and the general business, minus depreciation and ramp-up losses on new equipment, produce ATM gross margin; after R&D and SG&A, that becomes ATM operating income, which in turn sets the consolidated operating margin. The 20-F states that new equipment starts depreciating as soon as it is placed in service and that there can be a lag before high utilization [16]; an alternative explanation is that second-quarter margins benefited mainly from price increases in the general business, and that gross margin will stall when new lines depreciate in bulk.

Third-quarter ATM gross margin is the most direct test of this relationship. The points to watch are whether ATM gross margin reaches at least 28.5%, whether ATM operating margin rises to about 16.7%, and whether management sticks with its view that fourth-quarter gross margin will exceed 30%. If ATM gross margin comes in below 28% or operating margin fails to rise, the view that profit scales with revenue will need to be scaled back.

EMS revenue is set to jump about 40% on memory price pass-through; will that extra revenue dilute margins?

This debate decides how much of the large jump in third-quarter consolidated revenue turns into profit. EMS is about one-third of consolidated revenue, but its NT$1.57 billion of second-quarter operating income was only about 7% of the consolidated total [15][2]; the larger EMS revenue in the third quarter leaves consolidated gross margin guidance (20.5%-21.5%) flat with the second quarter even as ATM margin keeps rising [3]. Whether EMS operating margin recovers from 2.4% to 3.2%-3.4% decides whether pass-through merely inflates revenue or also contributes profit.

Second-quarter EMS already showed rising revenue alongside a falling margin. EMS revenue on the USI basis was NT$65.79 billion, up 11.9% year over year, but gross margin fell 0.6 percentage points sequentially to 8.9%, which management attributed to an unfavorable product mix and higher component costs; operating margin was 2.4%, slightly below 2.6% a year earlier [15][7]. The computing share rose from 10% a year earlier to 16% on demand for AI accelerator products. Management said third-quarter EMS growth comes mainly from passing through higher memory component prices, with minimal impact on operating margin, that growth excluding this effect follows historical seasonality, and that full-year EMS growth will be below 20% [7].

The direction of the pass-through is clear, but how complete it is cannot be verified directly from the disclosures. When memory and other component prices rise, EMS purchase costs and selling prices move up together, EMS revenue expands and gross margin is diluted, and the mix of seasonal consumer shipments and AI accelerator-related computing products then shapes EMS operating income; a larger EMS revenue share also dilutes consolidated gross margin by itself. An alternative explanation is that pass-through is incomplete or lagged, so revenue grows while margins fail to recover; the company does not disclose pass-through amounts, so price and volume within EMS revenue can be separated only through management's statements.

The third-quarter report needs to be read for margins at both the EMS segment and the consolidated level. The points to watch are whether EMS operating margin returns above 3.2%, whether EMS gross margin holds at 8.9%, and whether consolidated gross margin stays at or above 21.0%. If EMS operating margin is below 3.2% and gross margin below 8.5%, component price increases were not fully passed through.

Capex payments now exceed operating cash flow; can rising third-quarter profits stop the borrowing from growing?

This debate decides whether the financial strain of the expansion shows up before the revenue payoff. The company is running 21 expansion projects at once, and second-quarter payments for property, plant and equipment of NT$79.85 billion were nearly 1.8 times the first quarter's NT$44.09 billion [9][21]; interest-bearing debt rose from NT$265.33 billion at the end of March to NT$306.23 billion at the end of June, an increase of about NT$40.9 billion in one quarter [9]. If operating cash flow cannot keep up, financing costs and balance-sheet pressure will appear before the revenue returns.

Operating cash flow's coverage of expansion payments is falling quickly. In 2025 operating cash flow covered about 86% of payments for property, plant and equipment [19], in the first quarter of 2026 about 83% [21], and in the second quarter about 59% (NT$47.01 billion divided by NT$79.85 billion) [9]. First-half net proceeds from borrowings and bonds were NT$39.94 billion, the net debt to equity ratio was 0.47 at the end of June, and second-quarter EBITDA was NT$45.78 billion [9]; first-half spending was US$2.7 billion on machinery and US$1.4 billion on buildings and facilities [20].

The cash gap transmits through financing first and recovery later, and the timing of the recovery remains uncertain. Equipment and building spending becomes payments for property, plant and equipment, negative free cash flow is covered by new loans and bonds, and interest-bearing debt and interest expense rise; only after capacity enters service does growth in ATM revenue and EBITDA flow back as operating cash flow. On the first-quarter call management said this year's funding gap would mostly be covered by additional borrowing and that capital spending would likely continue into next year [22]; an alternative explanation is that payments keep accelerating in the second half and the cash gap widens further before the new capacity contributes revenue.

The third-quarter cash flow statement and balance sheet can answer this question directly. The points to watch are whether third-quarter operating cash flow covers at least 59% of payments for property, plant and equipment, and whether the net debt to equity ratio at the end of September stays at or below 0.47. If coverage keeps falling and the ratio rises above 0.54, the expansion's dependence on borrowing will deepen.

Risks and Falsifiers

Customer concentration means an order change at one large customer could hit both ATM and EMS at once. The five largest customers made up 46.5% of 2025 operating revenue and one customer (including OEM work done on its behalf) exceeded 10%; on 2025 revenue of NT$645.39 billion, the top five contributed about NT$300.1 billion, and the 20-F notes that the company has cut prices in the past to limit order cancellations [11]. In the first quarter of 2026 the top five EMS customers made up 64% of EMS revenue [14]. If the third-quarter report shows the top five ATM customers at no more than 45% and the top five EMS customers at no more than 70%, with no disclosed order cancellations or price cuts, this risk did not materialize in the quarter.

Shifts in competition and technology could directly weaken LEAP, the largest growth driver. Foundries are expanding their own advanced packaging capacity and competing for customers [23], and other packaging technologies such as Intel's EMIB could divert the CoWoS-type demand that the company is investing in most heavily [7]. On management's US dollar basis, 2026 LEAP revenue is set to exceed US$3.5 billion, more than about one-fifth of ATM revenue [20], and any share loss would hurt both utilization of the new capacity and recovery of its depreciation. If the computing share of ATM revenue stays at 30% or more in the third-quarter report [8] and management keeps its target of doubling LEAP revenue in 2027, this risk has not yet appeared.

Delays in executing the expansion would directly postpone LEAP and test revenue. Thirteen greenfield factories and eight brownfield renovations are under way at once and depend on construction partners delivering on time and to specification [7]; the third-quarter ATM guidance range is about NT$2.5 billion wide (NT$140.02-142.55 billion) [3], and it implies September ATM sales of about NT$41.2-43.7 billion, 15%-20% below August's NT$51.29 billion [6]. If third-quarter ATM segment revenue reaches at least about NT$142.55 billion and the tester count keeps rising, the execution risk is falsified.

Depreciation on new capacity could arrive before utilization ramps up, holding gross margin down. Equipment starts depreciating as soon as it enters service, and tool installation and the consolidation of traditional capacity can cause utilization to fluctuate [16][22]. At the midpoint of third-quarter ATM revenue guidance, about NT$141.28 billion, each percentage point of lower ATM gross margin removes about NT$1.4 billion of gross profit, or about 7% of the second quarter's NT$19.78 billion in ATM operating income [8]. If third-quarter ATM gross margin is at least 28.5% and consolidated depreciation and amortization grows no faster than ATM revenue, this risk has not materialized.

If component cost inflation cannot be fully passed through, EMS gross and operating margins will come under pressure together. On the call management acknowledged that margins could be squeezed if pricing adjustments cannot fully offset higher material and component costs [7]. On third-quarter EMS revenue of about NT$92.1 billion, each 0.5 percentage point of lower operating margin removes about NT$0.46 billion of operating income, about 29% of the second quarter's NT$1.57 billion in EMS operating income [15]. If third-quarter EMS operating margin is at least 3.2% and gross margin at least 8.9%, the risk of incomplete pass-through is falsified.

Reliance on borrowing to fund the expansion will push up interest-bearing debt and interest expense. Equipment and building payments may keep accelerating in the second half while operating cash flow growth lags; the second quarter alone had a cash gap of about NT$32.8 billion, interest-bearing debt rose by about NT$40.9 billion to NT$306.23 billion, first-half net borrowing and bond proceeds were NT$39.94 billion, and second-quarter consolidated net interest expense was not reported separately [9]. Management has said capital spending is likely to continue into next year [22]. If third-quarter operating cash flow covers at least 86% of payments for property, plant and equipment and the net debt to equity ratio stays at or below 0.47, this risk eases materially.

What to Watch Next

• ATM growth from new capacity: second-quarter ATM revenue was NT$126.15 billion, with a 30% computing share and 8,348 testers [8]. Third-quarter revenue of at least about NT$142.55 billion with computing above 30% would confirm the capacity story; revenue below about NT$140.02 billion or a falling computing share would contradict it. September ATM monthly sales are the early read.
• ATM margin versus depreciation: second-quarter ATM gross and operating margins were 27.3% and 15.7% [8]. A gross margin of at least 28.5% and an operating margin near 16.7% would confirm; a gross margin below 28% would falsify. Watch whether management repeats the view that fourth-quarter margin will exceed 30%.
• EMS pass-through and profit: EMS operating margin, EMS gross margin and consolidated gross margin were 2.4%, 8.9% and 21.0% [15][2]. EMS operating margin back above 3.2% would confirm that the roughly 40% revenue jump also adds profit; below 3.2% with gross margin under 8.5% would falsify.
• Expansion cash gap: operating cash flow covered 59% of payments for property, plant and equipment, and net debt to equity was 0.47 [9]. Coverage of at least 59% with the ratio at or below 0.47 would confirm the gap is stabilizing; a ratio above 0.54 would falsify.

Conclusion

ASE Technology's earnings are determined almost entirely by ATM, and ATM is currently constrained by capacity rather than demand. In the second quarter ATM made up 65.5% of consolidated revenue and about 94% of operating income, with a 27.3% gross margin and a 15.7% operating margin; yet in the same quarter NT$47.01 billion of operating cash flow covered only about 59% of NT$79.85 billion in payments for property, plant and equipment, and interest-bearing debt reached NT$306.23 billion at the end of June [2][8][9]. The central unresolved relationship is whether new capacity converts into revenue and margin faster than depreciation and debt rise; EMS pass-through of memory price increases will enlarge revenue while possibly making consolidated margins look stagnant.

Since the second-quarter results were released on 2026-07-30, visible third-party coverage has consisted mainly of results recaps, monthly-sales news and capacity-expansion reports (a factory purchase in Singapore and equipment orders), and the only piece discussing margin sustainability could not be read in full, so there is currently no attributable independent outside interpretation to set against the four debates above. The only outside reference left is the aggregate figure from seven analysts: their revenue estimate of NT$229.60 billion sits slightly below the low end of company guidance, while their EBIT implies a margin of about 13.5%, above the company's operating-margin guidance [4]. The two may be on different bases, and the gap shows only that outside views of revenue and margin are not aligned; it is not a judgment on the result.

The current understanding would be materially strengthened by a set of observations arriving together: third-quarter ATM revenue of at least about NT$142.55 billion with a computing share above 30%, ATM gross margin of at least 28.5%, EMS operating margin back above 3.2%, and operating cash flow coverage no longer below 59% with net debt to equity at or below 0.47. Conversely, ATM revenue below about NT$140.02 billion and ATM gross margin below 28%, together with further declines in coverage and a net debt to equity ratio above 0.54, would show that the costs and financing strain of the expansion are arriving ahead of the returns.

Sources

[1] Drillr earnings calendar (updated 2026-10-02) · ASX 2026-10-29 call · 2026-10-02 · Drillr earnings calendar · https://gateway.drillr.ai/mcp/private

[2] ASX 6-K filed 2026-07-30 · Q2 2026 consolidated income statement · 2026-07-30 · 6-K · https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001122411&type=6-K

[3] ASX 6-K filed 2026-07-30 · Q3 2026 outlook · 2026-07-30 · 6-K · https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001122411&type=6-K

[4] Drillr analyst_financial_estimates (updated 2026-10-02) · ASX quarter ending 2026-09-30 · 2026-10-02 · Drillr analyst_financial_estimates · https://gateway.drillr.ai/mcp/private

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[7] ASX Q2 2026 earnings call 2026-07-30 · guidance, utilization and Q&A · 2026-07-30 · earnings-call · https://gateway.drillr.ai/mcp/private

[8] ASX 6-K filed 2026-07-30 · Q2 2026 ATM income statement and operations · 2026-07-30 · 6-K · https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001122411&type=6-K

[9] ASX 6-K filed 2026-07-30 · Q2 2026 balance sheet, capex and cash flow · 2026-07-30 · 6-K · https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001122411&type=6-K

[10] ASX 20-F filed 2026-04-01 · group structure and SPIL acquisition · 2026-04-01 · 20-F · https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001122411&type=20-F

[11] ASX 20-F filed 2026-04-01 · customer concentration and TSMC alliance · 2026-04-01 · 20-F · https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001122411&type=20-F

[12] ASX 20-F filed 2026-04-01 · leading-edge advanced packages · 2026-04-01 · 20-F · https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001122411&type=20-F

[13] ASX 20-F filed 2026-04-01 · operating revenues by service line · 2026-04-01 · 20-F · https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001122411&type=20-F

[14] ASX 6-K filed 2026-04-29 · Q1 2026 results release · 2026-04-29 · 6-K · https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001122411&type=6-K

[15] ASX 6-K filed 2026-07-30 · Q2 2026 EMS income statement and operations · 2026-07-30 · 6-K · https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001122411&type=6-K

[16] ASX 20-F filed 2026-04-01 · fixed costs and capacity utilization · 2026-04-01 · 20-F · https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001122411&type=20-F

[17] ASX 20-F filed 2024-04-03 · 2022-2023 quarterly revenues and gross margin · 2024-04-03 · 20-F · https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001122411&type=20-F

[18] ASX 20-F filed 2026-04-01 · quarterly revenues and gross margin by service line · 2026-04-01 · 20-F · https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001122411&type=20-F

[19] ASX 20-F filed 2026-04-01 · 2025 consolidated income and cash flow · 2026-04-01 · 20-F · https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001122411&type=20-F

[20] ASX 6-K filed 2026-07-30 · 1H2026 recap and 2026 outlook · 2026-07-30 · 6-K · https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001122411&type=6-K

[21] ASX 6-K filed 2026-04-29 · Q1 2026 balance sheet and cash flow · 2026-04-29 · 6-K · https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001122411&type=6-K

[22] ASX Q1 2026 earnings call 2026-04-29 · LEAP guidance and Q&A · 2026-04-29 · earnings-call · https://gateway.drillr.ai/mcp/private

[23] ASX 20-F filed 2026-04-01 · competition · 2026-04-01 · 20-F · https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001122411&type=20-F

[24] ASX 6-K filed 2026-07-09 · June and Q2 2026 monthly net revenues · 2026-07-09 · 6-K · https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001122411&type=6-K