Polyethylene prices rebound sharply in July as naphtha costs surge and supply tightens

Polyethylene markets are experiencing a sharp rebound in July 2026, with Chinese futures on the Dalian Commodity Exchange touching approximately 8,016 CNY/t, representing a 16.7% gain over the past month and a 7.8% year-on-year increase. The rally is driven primarily by surging feedstock costs, with spot naphtha jumping 18.2% month-on-month to approximately USD 810/t as of late July, up 47% year-on-year from 2025 lows. The naphtha rebound reflects a tightening global crude market and persistent Middle East risk premiums.

This latest rally follows a volatile H1 2026 for polyethylene markets. The February 2026 Middle East conflict triggered a war-driven spike in March–April that saw US and European PE grades jump 40–80% on some assessments, per ICIS and Platts data. Prices then partially corrected through May–June as export volumes normalized and some demand softened. The current July rebound represents the second leg of the H1 volatility cycle, driven by renewed feedstock pressure rather than a sudden demand surge.

The ethylene chain is feeling the cost push directly. China ethylene was assessed at approximately USD 1,250/mt in late May, with Indian ethylene at USD 1,317/mt, as the naphtha rebound reversed the Q1 2026 downtrend. Global ethylene prices had fallen through 2025 to Q1 2026 lows of approximately USD 0.83/kg globally, but the H1 2026 chain of events — naphtha spike, war premium, then correction, then the current naphtha-driven rebound — has created an exceptionally volatile pricing environment for polyethylene producers and buyers alike.

US Gulf Coast producers are in a relatively advantaged position, with access to lower-cost ethane feedstock. US LDPE export prices are estimated in the USD 1,500–1,600/mt range for July, compared to Asian-produced grades. The US ethane advantage over naphtha-based production in Europe and Asia currently stands at approximately USD 300–400/mt, creating significant export opportunities for US PE producers. European PE buyers are facing the highest costs globally, with European naphtha-linked ethylene production costs estimated 30–40% above US Gulf Coast levels.

Demand fundamentals are supporting the price recovery. Global PE demand through H1 2026 has remained resilient, driven by steady packaging demand (the largest end-use sector) and restocking activity. The construction sector, a major PE consumer for pipe and conduit applications, shows mixed signals: US residential construction has softened, but infrastructure spending in Asia and public works in Europe provide a floor. Agricultural film demand in Asia remains seasonally strong.

Analyst views on the outlook diverge. ICIS expects the cost-driven rally to continue through Q3, with PE prices following naphtha higher, targeting China PE at 8,500–9,000 CNY/t by September. Argus Media is more cautious, noting that the current rally is not demand-led and risks stalling if crude oil corrects or new PE capacity in Asia (estimated 3–4 mtpa additions through late 2026) arrives on schedule. The base case: prices hold elevated through Q3 then edge lower in Q4 as capacity additions absorb demand growth. Key catalysts: US ethane-to-naphtha spread (determines export flows), Chinese PE futures curve (signals forward buying sentiment), and steam cracker operating rates in Europe and Asia.