S-Oil(010950) — Structural Implications of 1Q26 Profit Turnaround and Forward PER 6.0x
S-Oil(010950) recorded consolidated revenue of KRW 8.94T (≈$6.0B) and operating profit of KRW 1.23T (≈$821.8M) in Q1 2026, swinging to profit from an operating loss of KRW 21.5B (≈$14.4M) in the same period of the prior year. The refining segment accounted for 84% of total operating profit, while the Shaheen Project — with a total investment of KRW 9.26T (≈$6.2B) — is targeting commercial operations in early 2027 at 95% completion. The Trailing PER of 75.8x at the current share price of KRW 115,000 (≈$76.8) is a structural distortion driven by the low base effect in 2025; the Forward PER reflecting the 2026 earnings recovery stands at 6.0x*1, below the sector average of 8.8x.
1. Business Overview and Core Operations
S-Oil (010950) is a domestic refiner with Saudi Aramco (63.43% stake) as its largest shareholder, operating an integrated production complex for refining, petrochemicals, and lubricant base oil at the Onsan Industrial Complex in Ulsan. In Q1 2026, consolidated revenue reached KRW 8.9427T (≈$6.0B) and operating profit reached KRW 1.2311T (≈$821.8M), turning profitable compared to an operating loss of KRW 21.5B (≈$14.4M) in the same period last year — against a full-year 2025 baseline of revenue KRW 34.247T (≈$22.9B) and operating profit KRW 236B (≈$157.5M) (operating margin 0.7%). The Shaheen Project, with a total investment of KRW 9.258T (≈$6.2B), stood at 95% completion as of May 2026 and targets the establishment of an integrated refining-petrochemical value chain encompassing a steam cracker (annual ethylene capacity: 1.8 million tonnes), TC2C, and polymer plants.
📌 Q1 2026 operating profit KRW 1.2311T (≈$821.8M) — turnaround from an operating loss of KRW 21.5B (≈$14.4M) in the same period last year; refining segment operating margin of 14.6%
2. Core Product Competitiveness Analysis
The business comprises three segments: refining, petrochemicals, and lubricant base oil. In Q1 2026, the refining segment posted operating profit of KRW 1.039T (≈$693.6M) (margin: 14.6%), driving overall results, with inventory valuation gains of KRW 524.8B (≈$350.4M) and a lagging effect of KRW 430B (≈$287.0M) as key components. The petrochemical segment turned profitable at KRW 25.5B (≈$17.0M), supported by inventory valuation gains of KRW 87.1B (≈$58.1M), though underlying profitability remains structurally weak amid soft PX spreads. The lubricant base oil segment maintained a Q1 operating margin of 22.6% despite raw material tightness stemming from global diesel supply constraints. The parent company Aramco's pipeline bypass export system underpins stable feedstock procurement, given that approximately 90% of crude oil is sourced from the Middle East.
| Category | Details |
|---|---|
| Position | One of Korea's top three refiners. The refining segment accounts for approximately 79% of total Q1 revenue. |
| Competitive Advantages | Stable Middle Eastern crude procurement backed by parent Aramco. Lubricant base oil margin maintained at 22.6%, sustaining a high-margin profile. |
| Competitive Disadvantages | Persistently weak PX spreads leave the petrochemical segment fundamentally under-earning. Concentrated 90% exposure to Middle Eastern crude. |
3. Valuation Analysis
At the current price of KRW 115,000 (≈$76.8), the Trailing PER stands at 75.8x — significantly elevated relative to the sector average of 32.5x — but this is a structural distortion arising from the low base of 2025 annual operating profit of KRW 236 billion (≈$157.5M). The Forward PER, incorporating the anticipated 2026 earnings recovery, is 6.0x*1 — below the sector average of 8.8x — and PBR stands at 1.51x. Brokerage estimates diverge considerably: Hanwha Investment Securities projects 2026 annual operating profit at KRW 3.621 trillion (≈$2.4B)*1, while Hana Securities estimates KRW 2.7003 trillion (≈$1.8B)*1. For Q2, the divergence is particularly stark — Hanwha Investment Securities at KRW 1.342 trillion (≈$895.9M)*2 versus Hana Securities at KRW 587.7 billion (≈$392.3M)*2 — with the scope of the petroleum price ceiling policy impact and OSP levels serving as the key variables driving the divergence in quarterly estimates.
📌 Forward PER of 6.0x trails sector average of 8.8x — the gap versus Trailing PER of 75.8x reflects the low-base effect of 2025 operating profit of KRW 236 billion (≈$157.5M)
| Metric | Current | Sector Avg. | Interpretation |
|---|---|---|---|
| Trailing PER | 75.8x | 32.5x | Multiple distortion due to 2025 low-base effect |
| Forward PER | 6.0x | 8.8x | Below sector average upon 2026 earnings recovery |
| PBR | 1.51x | - | Market value premium relative to book assets |
| ROE | 2.0% | - | Reflects 2025 low base. Expected to improve to the 24–17% range upon 2026 earnings recovery*3 |
4. Risk Factors & Monitoring Points
The erosion of domestic refining margins from the petroleum maximum price regulation and the expansion of input cost pressure from sustained high Saudi OSP levels represent near-term downside risks to earnings. Key items to monitor include the risk of delays in the Shaheen Project commissioning schedule, and the interest burden arising from net borrowings of KRW 6.065 trillion (≈$4.0B) (as of end-2025) at a debt-to-equity ratio of 198.8%.
- ⚠️ Domestic selling price cap under the petroleum maximum price regulation — potential quarterly opportunity cost of approximately KRW 500 billion (≈$333.8M) in the refining segment
- ⚠️ Concentrated crude procurement from the Middle East (90% Middle Eastern origin) poses supply disruption risk if regional geopolitical tensions escalate
- ⚠️ Sustained weakness in PX spreads → risk of recurring losses in the petrochemicals segment
- ⚠️ Commissioning delays in the Shaheen Project could push back the 2027 earnings improvement timeline
- 📌 Dubai crude price: whether it falls below $80/bbl — trigger for termination of the petroleum price ceiling regulation
- 📌 Spot complex refining margin: track QoQ changes — verify validity of Hanwha Investment Securities' 2Q26 assumption of +$23/bbl
- 📌 Saudi OSP: monitor monthly announcements — sustained levels above $19.5/bbl will aggravate input cost pressure
- 📌 Shaheen Project construction progress and announcements of mechanical completion and commissioning commencement
5. Recent DART Disclosures
Two disclosures with high earnings relevance were selected.
| 날짜 | 공시명 | 요약 |
|---|---|---|
| 2026-05-11 | Consolidated Financial Statements-Based Operating (Preliminary) Results (Fair Disclosure) | Official preliminary disclosure of Q1 2026 consolidated revenue of 8조 9,427억원 (≈$6.0B) and operating income of 1조 2,311억원 (≈$821.8M). Confirms the turnaround to profitability compared to an operating loss of 215억원 (≈$14.4M) in the same period of the prior year. |
| 2026-04-27 | Investor Relations (IR) Conference Notice | Announcement of an IR conference held on April 27, 2026, covering the progress of the Shaheen Project and discussion of 2026 business direction. |
6. Key Changes Since Previous Analysis
The following new developments have been confirmed relative to the previous report. Hanwha Investment Securities and Hana Securities each published analyst reports on May 12, 2026, officially confirming in-line Q1 2026 results versus consensus. Hana Securities revised its 2026 annual operating income estimate down 5.6% from 2조 8,615억원 (≈$1.9B) to 2조 7,003억원 (≈$1.8B), while Hanwha Investment Securities maintained its estimate of 3조 6,210억원 (≈$2.4B). The consensus target price range across market coverage stands at KRW 130,000–150,000 (≈$86.8–$100.1 per share). In addition, the new base oil-derived immersion cooling fluid 'S-OIL e-Cooling Solution' was unveiled at the HVAC KOREA 2026 exhibition (COEX, Seoul, May 13–15), confirming an expansion of the high-value-added base oil application product lineup.
S-Oil(010950) is at an inflection point where two converging forces align — Q1 earnings recovery driven by inventory valuation gains and the imminent completion of the Shaheen Project — and the balance between the Forward PER 6.0x level and oil price cap/OSP risks will be the key variable shaping future quarterly earnings direction.
📎 출처 및 추정 근거
- *1 FY2026 annual operating profit and Forward PER estimates: Hanwha Investment Securities KRW 3.62T (≈$2.4B), EPS KRW 22,249 (≈$14.9); Hana Securities KRW 2.70T (≈$1.8B), EPS KRW 14,031 (≈$9.4) — each based on reports published 2026-05-12. Forward PER 6.0x is based on the average consensus EPS from multiple brokerages.
- *2 Q2 2026 operating profit estimates: Hanwha Investment Securities KRW 1.34T (≈$895.9M) (2Q26E: Dubai crude $90/bbl · lagged refining margin QoQ +$23/bbl), Hana Securities KRW 587.7B (≈$392.4M) (2Q26F: Dubai crude $90/bbl · lagged margin QoQ Flat) — each based on reports published 2026-05-12.
- *3 FY2026 ROE improvement estimates: Hanwha Investment Securities 2026E ROE 24.8%, Hana Securities 2026F ROE 16.94% — each based on reports published 2026-05-12.
- *4 USD equivalents (≈$) are approximate, calculated at 1 USD = 1,498 KRW (as of 2026-05-16, source: Yahoo Finance via TradeAlert).
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