Hyosung Heavy Industries Company Analysis — Why Q2 Operating Profit Hit a New Record Again
I had been looking into the power equipment sector when I checked Hyosung Heavy Industries’ DART filings, and what caught my eye was that Q2 results set a new all-time record once again. Q2 2026 operating profit came in at KRW 264.3 billion, up 60.9% year-over-year, and on a cumulative first-half basis the company posted revenue of KRW 3.0451 trillion (YoY +17.1%) and operating profit of KRW 416.6 billion (YoY +56.2%). Given that full-year operating profit in 2023 was KRW 257.8 billion, the company’s half-year results now comfortably exceed its full-year results from just three years ago.
This company holds close to half the installed base of 765kV ultra-high-voltage (UHV) transformers on the US grid and has held the No. 1 market share position in that segment since the early 2010s. It recently signed a KRW 787 billion contract with a major US transmission operator for 765kV transformers, reactors, and related equipment — the largest single project ever won by a Korean power equipment company in the US market. There are three questions I wanted to answer in this piece. First, what drove the operating margin to more than double, from 6.0% to 13.7%, in just three years? Second, inventory and the debt ratio are both rising together — is this healthy growing pains or a warning sign? Third, how many years of results does the KRW 17.5 trillion order backlog actually secure? This analysis is based on Hyosung Heavy Industries’ 2026 semi-annual report and its 2023–2025 annual business reports filed with DART.
Hyosung Heavy Industries Company Overview — Key Data at a Glance
| Ticker Name | Hyosung Heavy Industries | Ticker Code | 298040 (KOSPI) |
| Industry | Heavy Electrical Equipment (UHV transformers, circuit breakers, switchgear) · Rotating Machinery · Construction | CEO | Takeshi Yokota & Dong-gi Yang (Co-CEOs) |
| Major Shareholder | Hyosung Corporation and related parties (largest shareholder: Hyosung Corporation) | Listed On | KRX KOSPI |
| H1 2026 Revenue | KRW 3,045.19bn (YoY +17.1%) | Operating Profit | KRW 416.61bn (YoY +56.2%) |
| H1 2026 Operating Margin | 13.7% — improved from 10.3% a year earlier | Net Income (Controlling) | KRW 259.84bn (YoY +33.5%) |
| Order Backlog (end of Q2 2026) | KRW 17.5 trillion — up 63% YoY | Total Assets (H1 2026-end) | KRW 8,555.03bn |
| Total Equity | KRW 2,728.79bn | Debt Ratio | 213.5% (reflects working-capital build from expanding power equipment orders) |
| Basis of Analysis | DART 2026 semi-annual report + 2023–2025 annual business reports (consolidated financial statements) | ||
Hyosung Heavy Industries Business Structure — Two Pillars: Heavy Industry / Power Equipment and Construction
Hyosung Heavy Industries was established in 2018 through a spin-off from the Hyosung Group. Its business is split broadly into a Heavy Industry segment and a Construction segment. The Heavy Industry segment is further divided into power equipment (UHV transformers, circuit breakers, switchgear) and rotating machinery (motors, generators, reducers), with overseas production bases in the US, India, and China. Of these, the clear driver of results is the UHV transformer business. Hyosung Heavy Industries has held the No. 1 market share position in the US 765kV UHV transformer market since the early 2010s, and it currently supplies close to half of all 765kV transformers installed on the US grid. It recently signed a contract worth KRW 787 billion with a major US transmission operator covering 765kV transformers, reactors, and related equipment — the largest single project ever secured by a Korean power equipment company in the US.
This competitive edge doesn’t come from price alone — it comes from technology and a proven production track record. 765kV-class UHV transformers are products where design and testing know-how, along with an established track record, act as a real barrier to entry. Demand for replacing aging US transmission infrastructure has combined with a surge in power demand from AI data centers, leaving supply unable to keep pace with demand. The Construction segment covers housing, redevelopment/reconstruction, commercial buildings, civil/environmental works, and SOC projects, but the growth story behind recent results is being driven entirely by the Heavy Industry segment — and within that, specifically by power equipment. That’s the first thing worth understanding about this company. On a smaller scale, the company also runs a hydrogen infrastructure business through affiliates such as Hyosung Hydrogen, which holds a 40% share and the No. 1 position in Korea’s domestic hydrogen refueling station market.
Hyosung Heavy Industries 3-Year Financial Trend — Operating Margin Climbs from 6.0% to 13.7%
| Category | 2023 | 2024 | 2025 | H1 2026 |
|---|---|---|---|---|
| Revenue | KRW 4,300.57bn | KRW 4,894.98bn | KRW 5,968.51bn | KRW 3,045.19bn |
| Operating Profit | KRW 257.84bn | KRW 362.48bn | KRW 746.97bn | KRW 416.61bn |
| Operating Margin | 6.0% | 7.4% | 12.5% | 13.7% |
| Net Income (Controlling) | KRW 115.98bn | KRW 222.63bn | KRW 519.89bn | KRW 259.84bn |
| Order Backlog (Power Equipment Segment) | Not disclosed | Not disclosed | KRW 15,281.0bn (year-end) | KRW 20,196.4bn (end of Q1) |
| YoY Operating Profit | — | +40.6% | +106.1% | +56.2% |
| Debt Ratio | 289.0% | 202.6% | 190.3% | 213.5% |
What stands out most in this table is that the operating margin more than doubled in three years, from 6.0% in 2023 to 13.7% in H1 2026. Revenue grew 1.4x between 2023 and 2025, but operating profit grew 2.9x over the same period — meaning this isn’t simply a story of higher volume, but of an actual improvement in profitability as the mix shifted toward higher-value products like UHV transformers. That said, the debt ratio, which had fallen to 190.3% by the end of 2025, climbed back up to 213.5% by the end of H1 2026, and that deserves attention too. As I explain in more detail in the balance-sheet section below, this reflects rising inventory and payables tied to raw-material pre-purchasing and expanded production as order volume surges.
Hyosung Heavy Industries In-Depth Balance Sheet Analysis — What a 31.7% Jump in Inventory Really Means
| Item | End of 2025 | End of H1 2026 | Change |
|---|---|---|---|
| Total Assets | KRW 7,227.88bn | KRW 8,555.03bn | +18.4% |
| Total Equity | KRW 2,489.72bn | KRW 2,728.79bn | +9.6% |
| Total Liabilities | KRW 4,738.16bn | KRW 5,826.24bn | +23.0% |
| Debt Ratio | 190.3% | 213.5% | +23.2%p |
| Inventory | KRW 1,277.63bn | KRW 1,683.25bn | +31.7% |
| Trade & Other Receivables | KRW 1,407.78bn | KRW 1,524.51bn | +8.3% |
| Excess Billings on Construction Contracts | KRW 586.37bn | KRW 597.96bn | +2.0%, essentially flat |
| Cash and Cash Equivalents | KRW 216.77bn | KRW 172.59bn | -20.4% |
| Operating Cash Flow (H1 2026) | — | KRW 453.67bn | Sharply improved from KRW 162.04bn a year earlier |
| CAPEX (PP&E Acquisitions, H1 2026) | — | KRW 167.94bn | Already exceeds the full-year 2025 total of KRW 162.91bn |
A 31.7% jump in inventory in half a year looks less like a red flag and more like a natural consequence of the order surge. UHV transformers require substantial lead time between order and delivery to secure raw materials — copper, steel, and the like — and to complete production, so a spike in new orders naturally builds up work-in-progress and raw-material inventory first. That reading is supported by the fact that “excess billings on construction contracts” — where billing progress runs ahead of construction progress — stayed essentially flat, moving from KRW 586.37 billion to KRW 597.96 billion. That suggests the rise in receivables and inventory reflects a normal expansion of the production cycle rather than order delays or impairment. The rise in the debt ratio fits the same story: it’s driven less by interest-bearing debt and more by higher trade payables and short-term borrowing turnover tied to raw-material purchases. What’s actually worth highlighting is that operating cash flow improved sharply, from KRW 162.04 billion a year earlier to KRW 453.67 billion, and that CAPEX has already surpassed last year’s full-year total. That combination reads as a company generating cash while aggressively investing in future production capacity at the same time.
Hyosung Heavy Industries CAPEX & New Business — A Two-Front Expansion Race in Memphis and Changwon
The company plans to expand its UHV transformer plant in Memphis, Tennessee by 2028, boosting production capacity by more than 50% over current levels. Once complete, the Memphis plant will become the largest UHV transformer production base in the United States. Expanding US-based production capacity does more than just add capacity — it structurally reduces trade-related risk, including the roughly 18–20% tariff currently applied to transformers exported from Korea and the memory of a 37.42% anti-dumping duty imposed in the past. Domestically, the company is investing a total of KRW 100 billion in a new plant at its Changwon facility dedicated to export-only UHV circuit breakers rated at 420kV, 550kV, and 800kV, targeting completion in the first half of 2026. Once completed, UHV circuit breaker production capacity will increase to roughly 1.5x current levels, with output destined for markets including the US, Europe, and the Middle East.
On top of this, the company is also moving forward with plans to build an HVDC (high-voltage direct current) UHV transformer plant at the Changwon facility. Once it can produce both AC and DC UHV transformers, the company will be able to expand into the HVDC market, which is essential for renewable-energy integration and long-distance power transmission. The order book supports this aggressive expansion. Cumulative new orders in H1 2026 reached KRW 7,498.1 billion, close to last year’s full-year order total of roughly KRW 7.6 trillion, and the company raised its full-year new-order target from KRW 8.4 trillion to KRW 12 trillion. The power equipment segment’s order backlog grew from KRW 15,281.0 billion at the end of 2025 to KRW 20,196.4 billion at the end of Q1 2026 — a 32.2% increase in just three months. That also means that if the capacity expansion is delayed, the company may struggle to work through its own backlog.
Hyosung Heavy Industries — Three Drivers Behind the Doubling of Operating Margin
| Cause | Details | Temporary / Structural |
|---|---|---|
| ① A US UHV Transformer Super-Cycle | Surging power demand from AI data centers has combined with aging-grid replacement demand to create a persistent supply shortage, confirmed by the record KRW 787 billion single-project win | Structural (a multi-year infrastructure investment cycle) |
| ② An Improving High-Value Product Mix | A growing share of high-margin products such as UHV transformers and circuit breakers lifted the operating margin from 6.0% in 2023 to 13.7% in H1 2026, with gross margin rising over the same period | Structural (shift in product portfolio) |
| ③ Tariff Costs Passed Through to Customers | With US supply running short, importers are increasingly willing to absorb tariff costs, and more of that tariff burden is being reflected directly in selling prices | Mixed, partly temporary (subject to change with tariff policy and market supply-demand conditions) |
✅ 3 Investment Highlights
① No. 1 Market Share in US 765kV UHV Transformers
Built on a dominant position that supplies close to half of all installed 765kV transformers on the US grid, the company secured a record-breaking KRW 787 billion single project.
② KRW 17.5 Trillion Order Backlog, New-Order Target Raised to KRW 12 Trillion
Cumulative new orders in H1 2026 reached KRW 7,498.1 billion, near last year’s full-year total, while the power equipment segment’s backlog grew 32.2% in just three months — securing revenue visibility for years to come.
③ Memphis and Changwon Expansions Address Both Capacity and Tariff Risk
By expanding Memphis plant output more than 50% by 2028 and building a dedicated export UHV circuit breaker plant in Changwon, the company is working through its growing order book while also lowering trade-policy risk.
⚠️ 3 Risks
① Tariff and Trade Policy Uncertainty
Transformers exported from Korea to the US face tariffs of roughly 18–20%, and the company was previously hit with a 37.42% anti-dumping duty during the first Trump administration — trade policy shifts remain a real variable for results.
② Inventory and Debt Ratio Rising Together
Inventory grew 31.7% in half a year and the debt ratio climbed from 190.3% to 213.5%, adding to working-capital pressure. This looks like a normal consequence of order growth, but it needs to be monitored for whether it continues.
③ Execution and Delay Risk on Capacity Expansion
The Memphis expansion targets 2028 and the Changwon UHV circuit breaker plant targets completion in H1 2026 — construction delays or cost overruns could leave the company unable to work through its sharply expanded backlog on schedule.
My Investment Judgment After Analyzing Hyosung Heavy Industries
What struck me most after digging into this company is that the quality of its growth is changing, not just its scale. It isn’t simply that revenue is rising — operating margin has more than doubled in three years, underpinned by a structural combination of a dominant position in the US UHV transformer market and an improving high-value product mix. The rise in inventory and the debt ratio may look concerning at first glance, but with excess billings on construction contracts staying stable and both operating cash flow and CAPEX rising at the same time, this reads more like normal growing pains from a surge in orders than a warning sign.
My judgment is to increase my position (buying in tranches). There are two key reasons behind that. First, the company is responding to a structural, multi-year demand wave — aging US grid replacement plus surging AI data center power demand — from a position of clear market leadership as the No. 1 supplier in 765kV transformers. Second, an order backlog that has swelled to KRW 17.5 trillion, together with a new-order target raised to KRW 12 trillion, provides substantial revenue visibility for the next several years. That said, shifts in tariff policy or delays to the capacity expansion schedule are variables that could disrupt this trajectory, and I’m keeping both in mind.
Here are the triggers that would change my judgment: ① confirmation that the Memphis and Changwon expansions proceed on schedule and that the expanded backlog is actually converting into revenue, and ② a sharp shift in US trade policy that makes it harder to pass tariff costs on to customers, or the reimposition of anti-dumping duties. If clear signs of the latter emerge, I will stop adding to my position and move to a wait-and-see stance.
⚠️ Investment Disclaimer
This article is an individual investor’s analysis based on DART electronic disclosure filings and does not constitute investment advice.
All investment decisions must be made based on your own judgment and at your own responsibility.
Investing in stocks carries the risk of loss of principal.
References
- DART Electronic Disclosure System: https://dart.fss.or.kr
- Hyosung Heavy Industries official website: https://www.hyosungheavyindustries.com
- Hyosung Heavy Industries Q2 operating profit hits record, new-order target raised to KRW 12tn (Money Today): https://www.mt.co.kr/industry/2026/07/31/2026073116310699564
- Hyosung Heavy Industries Q2 operating profit KRW 264.3bn, “quarterly record”… order backlog at KRW 17.5tn (Bloter): https://www.bloter.net/news/articleView.html?idxno=669735
- Hyosung No.1 in US UHV transformer market share… record results (Hankyung): https://www.hankyung.com/article/2026050562361
- Basis of analysis: DART 2026 semi-annual report + 2023–2025 annual business reports (consolidated financial statements)
