April Recap - European Naphtha

NWE CIF averaged $942.33/mt (+10.1% MoM, +72.1% YoY), consolidating the regime break that began in March. Mechanism: lingering supply pull from the Strait of Hormuz closure(4-Mar onwards) — pre-war Middle East flows that historically supplied roughly 60% of Asian naphtha imports remained absent, forcing Asian buyers to bid forWest-of-Suez barrels and dragging European prices structurally higher. The 8-Apr Iran-US ceasefire triggered the month's largest single-session collapse(-$128/mt, -12.4%), but prices recovered as the market priced that the ceasefire did not restore Hormuz transit; W4 closed at $1,025/mt, above March's close.

The East-West spread (Japan-NWE) collapsed from $139/mt to $78/mt average and inverted to -$8.75/mt on 21-Apr, signalling NWE-specific tightness as Asia-bound replacement flows tightened the European balance. Crack vs Brent collapsed deeper to -$14.43/bbl as crude led the complex; Open Spec petchem-grade premium widened +232% MoM as European steam crackers absorbed the pool Asian crackers (running 10-30% cuts) could not. Watch the East-West spread and any signal of normalised Hormuz transit; ceasefire alone did not unwind the price.

Price Action

• Open $951.75/mt (1-Apr), close $1,025.00/mt(29-Apr); monthly avg $942.33/mt vs March's $855.73/mt (+10.1% MoM) and April2025's $547.45/mt (+72.1% YoY).
• Monthly high $1,032.25/mt (7-Apr), low$831.75/mt (17-Apr); intra-month range $200.50/mt was about half March's$379.50/mt, reflecting the volatility shock fading from peak panic to elevated baseline.
• Largest single-day move -$128/mt on 8-Apr(-12.4%) coincided with the announced Iran-US ceasefire; the W3 unwind to the 17-Apr low and W4 recovery to the new highs confirms the market priced that ceasefire alone did not restore Hormuz transit.

Cross-Market Dynamics

• Crack vs Dated Brent averaged -$14.43/bbl inApril vs -$7.54/bbl in March; naphtha gained 10.1% MoM in absolute terms butBrent rallied harder, with crude pricing the broader Hormuz disruption that hit middle distillates hardest. The crack reading places naphtha as a follower in the rally, not a leader.
• Open Spec Naphtha vs CIF averaged +$30.37/mt vsMarch's +$9.14/mt (close +$37/mt vs +$23/mt at month-start); petchem-grade naphtha bid sharply over standard grade as European steam crackers absorbed the feedstock pool that Asian crackers (running cuts of 10-30%) could no longer take.
• N+A Heavy Naphtha diff narrowed slightly to+$18.16/mt (April) from +$20.55/mt (March); reformer/gasoline-blending pull eased modestly relative to petchem pull, consistent with petchem being the marginal buyer setting price.

Cross-Regional Dynamics

• Japan CFR averaged $1,031.20/mt vs March's$994.82/mt (+3.7% MoM); NWE rallied 2.7x harder than Japan despite Asia being the deeper-impacted Hormuz-exposed region.
• East-West peaked at $140.50/mt (1-Apr, full carry-over from March), inverted to -$8.75/mt (21-Apr, the structural anomaly of the month), recovered to +$18/mt by 29-Apr.

Curve Structure

• Backwardation every trading day; M1-M2 intra-month range +$45.00/mt (17-Apr) to +$83.00/mt (27-Apr).
• The structural break was March (M1-M2 +$7.50 end-Feb to +$98.00 end-Mar); April average +$63.62/mt vs March's +$59.89/mt is essentially flat at the new structurally backwardated level. Pattern is best described as prompt squeeze maintained: M1-M2 widened $9.75/mt while flat price gained $73.25/mt, the curve is holding the March repricing rather than running ahead of it.

Price Volatility

• Sustained higher-volatility regime, not a returnto baseline; until Hormuz transit normalises, the elevated CV should be treated as the operative baseline for position sizing.
• Japan CFR volatility (7.54%) exceeds NWE CIF(5.76%) for the first time in the six-month series; consistent with Asia being the demand-side shock-absorber (cracker rate cuts) while NWE settled into a tighter, more orderly tightness.

Something to Watch

• East-West spread(Japan CFR – NWE CIF) as the regional tightness signal:
  
  • Observation: $78/mt April avg vs $139/mt March; one inversion (-$8.75/mt on 21-Apr); month-end recovery to +$18/mt.
  • Why it matters: sustained narrowing below $20/mtor further inversions confirm structural Europe-specific tightness with implied west-to-east flow reversal; widening back above $100/mt signals Asia reabsorbing the marginal pull as Hormuz transit recovers, reopening the conventional Europe-to-Asia arb.
  • What to monitor: daily East-West close; Asian steam cracker run-rate surveys; Kpler/Vortexa data on West-of-Suez flow direction.
• Strait of Hormuz transit as the binary catalyst:
  
  • Observation: 8-Apr ceasefire triggered -12.4% single-session move but Hormuz transit remained well below pre-war levels through month-end; April closed above March close.
  • Why it matters: confirmed restoration of normalHormuz transit triggers a sharp unwind in M1-M2 backwardation and likely 20-30%flat-price retracement; sustained closure into Q3 entrenches the elevated CV regime and forces deferred-month repricing as the disruption shifts from prompt to structural.
  • What to monitor: IEA monthly oil market report; daily tanker transit data through Hormuz; Brent flat price as the lead indicator (naphtha is following).
• Petchem-grade Open Spec diff as the demand-side canary:
  
  • Observation: Open Spec premium currently +$30/mtvs March's +$9/mt.
  • Why it matters: a sustained widening above+$40/mt signals European steam crackers continuing to bid aggressively as the marginal buyer; compression toward March's +$9/mt would confirm the petchem bid is fading, prompt easing is underway, and flat-price retracement likely follows.
  • What to monitor: weekly Open Spec close;European cracker margins via the spread vs ethylene FD NWE.

Note: All figures, prices and market activity referenced in this report are based on the period 1–30 April 2026.