May Pricing Analysis - European Naphtha

European naphtha NWE CIF Cargoes fell 25.9% open-to-close in May, from $976.25/mt to $723.75/mt, averaging $877.22/mt (-7.31% MoM, +64.13% YoY). The month opened at Hormuz-risk-premium highs before a -$96.50/mt collapse on 06-May on de-escalation signals, a brief W3 recovery, then relentless selling through W4-W5 as a US-Iran MOU sent Brent down almost 19% for the month. Naphtha underperformed crude throughout: the NWE CIF vs Brent Futures crack deteriorated from -$5.98/bbl (April avg) to -$9.40/bbl (May avg), closing at -$11.07/bbl, as Asian petrochemical demand destruction capped any recovery. The M1-M2 prompt spread collapsed from $56.00/mt (open) to $17.50/mt (close) as forward supply expectations improved faster than near-term physical balances eased. Beneath the selloff, grade bifurcation was the structural story: LVN premiums surged to +$115/mt at close (+70% MoM avg) and N+A Heavy to +$58/mt (+109%) as gasoline blending pulled light ends from a petchem feedstock market facing demand destruction. The key forward question is whether the MOU translates into resumed Middle East flows sufficient to ease the Asian deficit, or infrastructure damage and tanker-route uncertainty sustain the disruption premium into Q3.

Price Trends

NWE CIF opened $976.25/mt (01-May), closed $723.75/mt (29-May), monthly avg $877.22/mt vs April's $946.39/mt (-7.31% MoM, +64.13% YoY).
Monthly high $982.75/mt on 05-May as Hormuz violence flared; low $723.75/mt on 29-May as the US-Iran MOU was agreed; intra-month range $259.00/mt.
Largest single-day move: -$96.50/mt on 06-May ($982.75 to $886.25) as de-escalation signals reversed the prior session's surge; the spike-and-collapse on 05-06 May defined the month's ceiling.
W3 (+2.37% WoW, avg $927.20/mt) offered a brief recovery as ceasefire talks stalled; the recovery did not hold, confirming the W3 bounce as a counter-trend move rather than a floor.
W5 (-14.52% WoW, avg $754.56/mt) was the capitulation leg as Brent fell almost 19% on the MOU agreement; the close at $723.75/mt represents the lowest print since pre-March 2026.

Cross-Commodity Dynamics

NWE CIF vs Brent Futures (Month 1) averaged -$9.40/bbl in May vs -$5.98/bbl in April, a -$3.42/bbl deterioration; the spread opened -$9.12/bbl and closed -$11.07/bbl, widening through the month as demand destruction offset the supply-risk unwind.
NWE CIF vs Dated Brent (Prompt) averaged -$8.97/bbl vs -$14.09/bbl in April; the improvement was front-loaded, opening at -$7.66/bbl but reversing to -$12.04/bbl at close, confirming naphtha's inability to sustain outperformance.
The mechanism: the Hormuz closure had driven a supply-disruption premium into naphtha; as ceasefire signals emerged, that premium unwound in crude faster than Asian petrochemical demand recovered, leaving naphtha ex-crude spreads structurally weaker at month-end.
Grade bifurcation: LVN and N+A Heavy premiums diverged sharply from the benchmark as gasoline blending demand captured light ends while petchem-grade naphtha faced demand destruction.

Market Activity

Trading offer-side dominated (bid/offer ratio 0.54) consistent with a market where sellers were setting the pace.
Intermediary selling dominated: Vitol SA led the offer side, having been the rank-2 buyer in April with 33 bids; this regime shift from net long to net short is consistent with intermediary repositioning, unwinding April length accumulated during the supply-disruption rally into the ceasefire-driven price decline.
Aramco Trading, BP Oil International, and TOTSA TotalEnergies Trading SA reinforced the sell side; all three appeared on both sides, indicating two-way intermediary positioning rather than directional flow.
Shell International Trading appeared as a seller, absent in April; new entrant on the offer side in a declining market is a bearish signal.
Buy side: Trafigura Pte Ltd. maintained bid-side dominance but at reduced pace vs April, signalling continued but lower-conviction coverage buying into the decline; Glencore Energy UK Ltd was the notable new entrant (absent from April top participants).
Vitol SA was the biggest seller, with Glencore and Trafigura the primary buyers on matched deals, confirming the Vitol-to-buyer flow of length redistribution.

Top Sellers

Top Buyers

Trafigura Pte Ltd.
Glencore Energy UK Ltd
TOTSA TotalEnergies Trading SA
Vitol SA
BP Oil International / Aramco Trading Limited

Cross-Regional Dynamics

Japan CIF Swaps (M1) averaged $895.96/mt in May vs NWE CIF avg $877.22/mt; Japan premium ~$53/mt vs ~$57/mt in April, a modest $4/mt compression
Japan CIF opened $950.00/mt and closed $745.00/mt (-21.6% open-to-close), tracking but underperforming the NWE selloff in absolute terms; the Japan close implies the Asia-Pacific arb tightened as the month-end ceasefire repricing hit Asian buyers harder
The East-West premium persisting at ~$53/mt despite the global selloff reflects the structural nature of Asian demand disruption: IEA naphtha demand in Asia fell an estimated 430 kb/d year-on-year in April and is set to fall 110 kb/d for 2026 as a whole, as Middle East feedstock volumes remain unavailable; European cargoes remain the marginal alternative supply source even as the ceasefire bid for normalisation advances
If the MOU progresses to a full reopening of Hormuz transit, Middle East naphtha re-entering the Asian market would compress the E-W premium further and reduce European export pull

Curve Structure

Front collapse pattern; M1-M2 opened May at$56.00/mt and fell progressively to $17.50/mt by 29-May.

M1-M2 averaged $38.20/mt vs April's $64.16/mt average (-$25.96/mt MoM); the month's high for M1-M2 was the opening print ($56.00/mt, 01-May); the entire month was one-directional decompression, with no recovery in the prompt spread even during the W3 flat-price bounce.
Mechanism: elevated backwardation in April priced acute prompt scarcity tied to Hormuz supply disruption; as ceasefire signals advanced through May, deferred supply expectations improved faster than near-term physical availability, flattening the front.
At $17.50/mt M1-M2, the curve is no longer pricing acute scarcity; a compression toward zero would indicate physical easing and likely further flat-price pressure; a reversal back above $40/mt would signal ceasefire expectations collapsing and renewed prompt tightness.

European Naphtha Curve Structure | General Index — Source: GX Go

Price Volatility

Prompt 1 CV rose to 8.69% in May vs 5.90% in April, reflecting the binary ceasefire-driven swings (05-06 May spike-and-collapse, W5 capitulation); CV remains 4x the pre-conflict Dec-25/Feb-26 range of 2.19-2.28%.
Japan CIF Swaps (M1) CV 7.28% in May vs 5.91% in April; the near-parallel move confirms the volatility driver is global (Hormuz/crude) rather than NWE-specific.
Risk models calibrated to the pre-conflict 2-4% CV regime remain inadequate; at 8-9% CV, position sizing and margin requirements for NWE naphtha exposure are running at approximately 3-4x pre-conflict levels; elevated CV should be assumed as the baseline until Hormuz transit normalises.

Something To Watch

M1-M2 spread as the prompt scarcity signal: M1-M2 closed May at $17.50/mt, down from April's $74.50/mt close and the month's own $56.00/mt open; compression toward zero or inversion to contango would confirm the Hormuz prompt scarcity premium has fully unwound, removing key support for flat price; a reversal above $40/mt would signal resumed supply tightness and bullish re-pricing of the prompt; monitor: daily M1-M2 close, Hormuz transit vessel counts (Kpler), confirmation or collapse of the US-Iran MOU.
LVN premium as the gasoline-blending demand indicator: LVN closed May at +$115/mt vs the CIF benchmark, 70% above its April average of +$50.70/mt; a sustained LVN premium above $100/mt signals that gasoline blending demand is absorbing light-end naphtha faster than petrochemical demand recovers; compression of the LVN premium would indicate either a resumption of petchem feed demand or a deterioration of gasoline margins, both of which would reprice the grade-differential complex; monitor: weekly NWE gasoline crack spreads, European steam cracker operating rates, LVN vs CIF Cargoes weekly close.
Hormuz reopening timeline as the binary catalyst for the East-West arb and flat price: the US-Iran MOU was agreed 29-May but partial; a confirmed full reopening would re-introduce Middle East naphtha flows to Asia, compressing the East-West premium (~$53/mt) and reducing demand pull for European cargoes; a collapse of the MOU would reverse May's crude selloff and reignite the Hormuz supply-scarcity premium; monitor: Kpler Hormuz transit vessel counts, US-Iran diplomatic statements, tanker war-risk insurance premiums, Japan CIF Swaps vs NWE CIF weekly spread.

Note: All figures, prices and market activity referenced in this report are based on the period 1–29 May 2026.