S-Oil (010950) In-Depth Analysis: Imminent Shaheen Project Completion and Normalization of Refining Segment Earnings
S-Oil is a domestic refiner with Saudi Aramco as its parent company. In Q1 2026, it recorded an operating profit of KRW 1.23 trillion (≈$821.1M), turning profitable from an operating loss in the same period a year earlier. With completion of the Shaheen Project — which has absorbed a total investment of KRW 9.258 trillion (≈$6.2B) — drawing near, the wide gap between the Trailing PER of 75.8x and the Forward PER of 6.0x is attracting market attention, centered on whether 2025 marked the trough in earnings.
1. Company Overview and Core Business
S-Oil (010950) is a domestic refiner that operates an integrated production facility for refining, petrochemicals, and lube base oil at the Ulsan Onsan Industrial Complex, with Saudi Aramco (63.4% stake) as its largest shareholder. In Q1 2026, consolidated revenue reached KRW 8.94T (≈$6.0B) with operating profit of KRW 1.23T (≈$821M), turning profitable from an operating loss of KRW 21.5B (≈$14.4M) in the same period of the prior year. Full-year 2025 revenue was KRW 34.2T (≈$22.8B) with operating profit of KRW 236B (≈$157.5M), yielding an operating margin of 0.7%; market capitalization as of May 14, 2026 stood at KRW 12T (≈$8.0B). With approximately 90% of crude oil sourced from the Middle East, Aramco's pipeline bypass export system underpins supply stability.
📌 Q1 operating profit of KRW 1.23T (≈$821M) — turnaround to profitability | Aramco's 63.4% stake is the cornerstone of crude oil procurement stability
2. Competitive Analysis of Core Products
The refining segment accounts for approximately 79% of total revenue and drove overall results with Q1 2026 operating profit of KRW 1.04T (≈$694M). The Shaheen Project, with total investment of KRW 9.26T (≈$6.2B), had reached an EPC completion rate of 96.9% as of end-April 2026; following mechanical completion in June, it will undergo commissioning in H2 2026 targeting commercial operations in early 2027. Upon completion, an integrated refining-petrochemical value chain will be established, incorporating a steam cracker (1.8 million tonnes per year of ethylene capacity), TC2C, and polymer plants. The lube base oil segment recorded a Q1 operating margin of 22.6% amid tight diesel supply conditions, while the petrochemical segment turned profitable with operating profit of KRW 25.5B (≈$17.0M).
| Category | Details |
|---|---|
| Position | Among domestic refiners, holds a direct Aramco-linked crude procurement system; vertically integrated in lube base oil |
| Competitive Advantages | Stable crude supply via parent Aramco | Establishment of olefin self-sufficiency upon completion of the Shaheen Project |
| Competitive Disadvantages | Weak PX spread undermines petrochemical segment profitability | High earnings sensitivity to refining margin fluctuations |
3. Valuation Analysis
As of May 14, 2026, the Trailing PER at the current price of KRW 115,000 (≈$76.8) stands at 75.8x, significantly above the sector average of 32.5x. This is attributable to the low earnings base of KRW 236.0B (≈$157.5M) in annual operating profit for 2025; the Forward PER reflecting 2026 earnings recovery stands at 6.0x, below the sector average of 8.8x*1. Hanwha Investment Securities estimates 2026 annual operating profit at KRW 3.621T (≈$2.4B)*2, while Hana Securities estimates KRW 2.700T (≈$1.8B)*3. PBR stands at 1.51x at the current price, and ROE, which was 2.0% in 2025, is expected to improve depending on the scale of earnings recovery in 2026.
📌 Forward PER of 6.0x is in discount territory versus the sector average of 8.8x — whether 2025 marks the earnings trough is the critical variable
| Metric | Current | Sector Average | Interpretation |
|---|---|---|---|
| Trailing PER | 75.8x | 32.5x | Reflects 2025 earnings trough; temporarily elevated multiple |
| Forward PER | 6.0x | 8.8x | Trades at a discount to the sector upon pricing in 2026 earnings normalization |
| PBR | 1.51x | — | Moderate level relative to asset value |
| ROE | 2.0% | — | Based on 2025 earnings trough |
4. Risk Factors and Monitoring Points
The domestic petroleum price ceiling policy continues to erode domestic refining margins, and the historically elevated Aramco OSP (Official Selling Price) adds to cost pressures. Persistent weakness in PX spreads maintains loss pressure in the petrochemical segment, and delays in the Shaheen Project's commissioning and commercial operations schedule could impair the earnings visibility of the chemical segment in 2027.
- ⚠️ Erosion of domestic refining margins due to the continued domestic petroleum price ceiling policy
- ⚠️ Rising raw material procurement costs if Aramco OSP remains at elevated levels
- ⚠️ Risk of the petrochemical segment swinging to a loss amid continued PX spread weakness
- ⚠️ Weakened 2027 chemical segment earnings visibility in the event of Shaheen Project commercial operations delays
- 📌 Monthly monitoring of whether the complex refining margin (spot) falls below $10/bbl
- 📌 Shaheen Project EPC progress rate and mechanical completion schedule (target: June 2026)
- 📌 Monthly Aramco OSP movement and timing of the domestic petroleum price ceiling policy termination
5. Recent DART Disclosures
Two key DART disclosures from S-OIL as of May 2026 have been selected.
| 날짜 | 공시명 | 요약 |
|---|---|---|
| 2026-05-11 | Consolidated Financial Statements Based Operating (Preliminary) Results (Fair Disclosure) | Q1 2026 consolidated revenue reached 8조 9,427억원 (≈$6.0B) with operating profit of 1조 2,311억원 (≈$821.8M), a turnaround from an operating loss of 215억원 (≈$14.4M) in the same period last year. Inventory-related gains of 6,434억원 (≈$429.5M) were disclosed as the primary driver of the earnings improvement. |
| 2026-04-27 | Investor Relations (IR) Conference Held (Notice Disclosure) | Disclosed the holding of an investor relations conference for institutional investors ahead of the Q1 2026 earnings announcement. Key agenda items previewed include the progress update on the Shaheen Project and segment-level earnings outlook. |
S-Oil appears to have passed the 2025 earnings trough, with Q1 2026 refining segment profits entering a normalization trajectory. The Shaheen Project completion timeline and trends in refining margins and OSP will serve as the key variables determining the company's future earnings path.
📎 출처 및 추정 근거
- *1 Forward PER of 6.0x and sector-average Forward PER of 8.8x: Values derived by dividing the Forward EPS consensus from the TradeAlert DB (as of 2026-05-14) by the current share price of KRW 115,000 (≈$76.8)
- *2 Hanwha Investment & Securities FY2026 annual operating profit estimate of KRW 3,621 billion (≈$2.4B): Based on a company analysis report published on 2026-05-12 (Analyst Lee Yong-wook, Hanwha Investment & Securities Research Center)
- *3 Hana Securities FY2026 annual operating profit estimate of KRW 2,700.3 billion (≈$1.8B): Based on an Earnings Review report published on 2026-05-12 (Analyst Yoon Jae-sung, Hana Securities)
- *4 USD equivalents (≈$) are approximate, calculated at 1 USD = 1,498 KRW (as of 2026-05-16, source: Yahoo Finance via TradeAlert).
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