China Fuel Export Halt and HD Hyundai (267250.KS) Refining Margins

On 1 October 2026, China halted exports of gasoline, diesel and jet fuel to destinations other than Hong Kong and Macau, with no end date, according to OilPrice and other outlets. The China fuel export halt tightens Asian product supply, and Korean refiners' export margins may widen as a result.[1][2]

China suspended approvals for product exports beyond Hong Kong and Macau, and PetroChina cancelled several October gasoline and jet fuel cargoes.[3]

Before the halt, China exported 6.01 million tonnes of refined products in August 2026, up from 4.65 million tonnes in July.[4] At the August rate, that is roughly 6 million tonnes a month leaving the Asian market.[4]

Beijing has changed course before this year. In late June, sources said China would raise its July refined fuel export allowance and remove destination restrictions.[5] In early July, China was reported to have decided to lift export restrictions for the rest of July.[6]

How refining margins work in Asia

Refineries turn crude oil into gasoline, diesel, jet fuel and other refined products. A refiner mainly earns the "crack spread": the selling price of a refined product minus the cost of crude. The wider the spread, the more a refinery makes on each barrel it processes.

Singapore is Asia's pricing hub. Southeast Asia, Australia and the Philippines lack enough refining capacity and import from China, Korea, India and Singapore. Australia, for example, sourced about 32% of its jet fuel from China in 2025.[7]

Korea's refining capacity far exceeds domestic demand, and the country exports about 1.1 million barrels a day of gasoline, diesel and jet fuel.[8]

In March this year, the Korean government capped refiners' export volumes at 2025 monthly levels to protect domestic supply, and also controlled domestic fuel prices.[8] Korean refiners cannot sell more abroad or raise prices at home, but nothing caps what each exported barrel fetches.

From China's halt to Korean export margins

Step one: China's halt removes gasoline, jet fuel and diesel that had been sold into Southeast Asia, Australia and the Philippines.[3][4]

Step two: buyers in those markets turn to refineries in Korea, Taiwan, India and Singapore, and Singapore gasoline, jet and diesel cracks may widen.

Step three: Korean refiners' export volumes are capped and domestic prices are controlled, so the export crack is their only uncapped source of margin.[8]

Step four: a higher export crack multiplied by about 1.1 million barrels a day of exports flows into the refining-segment operating profit of Korean refiners, and from there into their parent companies' earnings per share.[8]

Others may lose: Chinese refiners give up export margin, and import-dependent buyers in Australia and the Philippines, plus regional airlines, may pay more; Hong Kong is exempt.

HD Hyundai (267250.KS) and the refining link

HD Hyundai (267250.KS) is a Korean holding company. Its subsidiaries include the shipbuilder HD Korea Shipbuilding & Offshore Engineering (HD KSOE) and the refiner HD Hyundai Oilbank.

It sits at the last link: a wider export crack could show up first in HD Hyundai Oilbank's export revenue and operating profit, then in HD Hyundai's consolidated profit.

In 2025, HD Hyundai Oilbank posted revenue of KRW28.02 trillion and operating profit of KRW474 billion, up 83.7% year on year; group revenue was KRW71.26 trillion, so refining made up about 39%.[10] In the second quarter of 2026, group operating profit was KRW4.12 trillion, of which HD Hyundai Oilbank contributed KRW1.82 trillion, about 44%.[9]

On the source material's estimate, HD Hyundai Oilbank accounts for about 20% of Korea's refined-product export volume, or about 225,000 barrels a day. If the export crack widened by $5 a barrel, that would add about $100 million a quarter, roughly KRW150 billion, equal to 3.6% of second-quarter consolidated operating profit. Adjusted for the group's roughly 74% stake, that is about 5% to 6%.[9]

The export share, $5 spread and stake are assumptions, not company disclosures. The outcome also depends on how long the wider spread lasts and whether losses from Korea's domestic price cap offset the export gain.

On 1 October, HD Hyundai closed at KRW197,500, down 2.5% from KRW202,500 the previous trading day. The stock is down 9.8% over the past month and up 27% over the past year, with a market capitalization of about KRW13.96 trillion.[11][12]

What to watch next

The fastest signal is price. Crack spreads reprice within days, so the first test is whether Singapore 92 RON gasoline, jet fuel and 10ppm gasoil cracks average above their September levels through October.

In late October, Korean refiners report third-quarter results; watch for stronger export margins in commentary and fourth-quarter guidance.

In mid-November, Chinese customs publish October refined-product exports; watch whether they come in well below August's 6.01 million tonnes.[4] Korea's monthly trade data also matter: rising refined-product export values on flat volumes would show a price-led gain.

The final check comes in late January 2027: whether HD Hyundai Oilbank's fourth-quarter operating profit holds at or above the second-quarter level of KRW1.82 trillion.[9]

The following would break this chain: China issues new export approvals after the 7 October Golden Week holiday and October and November exports stay at 4 to 6 million tonnes; Gulf product supply recovers and Singapore cracks are flat or lower in October; Korea tightens export caps below 2025 levels or imposes a windfall levy; or HD Hyundai Oilbank's fourth-quarter profit falls quarter on quarter despite a wider crack.

The halt is open-ended but may be reviewed after 7 October; if China resumes exports quickly, the effect will fade fast.

This analysis only maps transmission chains that may be overlooked. It is not a stock recommendation.

Sources

[1] OilPrice · 2026-10-01 · China Halts Fuel Exports Until Further Notice · https://oilprice.com/Latest-Energy-News/World-News/China-Halts-Fuel-Exports-Until-Further-Notice.html [2] YourNews · 2026-10-01 · China Halts Most October Fuel Exports as Global Diesel Supplies Tighten · https://yournews.com/2026/10/01/7212448/china-halts-most-october-fuel-exports-as-global-diesel-supplies/ [3] Drillr event data · 2026-10-01 · China export approvals suspended; PetroChina cancels October cargoes [4] Drillr event data · 2026-09-08 · China refined oil exports, July and August 2026 [5] Business Times · 2026-06-25 · China to raise refined fuel export allowance for July · https://www.businesstimes.com.sg/companies-markets/energy-commodities/china-raise-refined-fuel-export-allowance-july-sources-say [6] investinglive · 2026-07-08 · China reportedly decides to lift restrictions on refined fuel exports for the rest of July · https://investinglive.com/news/china-reportedly-decides-to-lift-restrictions-on-refined-fuel-exports-for-the-rest-of-july-20260708/ [7] The Conversation · 2026-03 · China's ban on fuel exports is deeply worrying for Australian air travellers · https://theconversation.com/chinas-ban-on-fuel-exports-is-deeply-worrying-for-australian-air-travellers-278313 [8] Argus · 2026-03 · South Korea caps fuel exports to safeguard supply · https://www.argusmedia.com/en/news-and-insights/latest-market-news/2801979-south-korea-caps-fuel-exports-to-safeguard-supply [9] The Asia Business Daily · 2026-07-31 · HD Hyundai Surpasses 4 Trillion Won in Q2 Operating Profit · https://www.asiae.co.kr/en/article/2026073116574951167 [10] The Public (더퍼블릭) · 2026-02 · HD Hyundai 2025 revenue KRW71.3 trillion, operating profit KRW6.1 trillion · https://www.thepublic.kr/news/articleView.html?idxno=294380 [11] Drillr market data · 2026-10-01 · HD Hyundai daily closing prices on KRX [12] Drillr company snapshot · 2026-10-01 · HD Hyundai market capitalization and period returns