NWE CIF naphtha fell 16% open-to-close ($781.25/mt to $653.75/mt; avg $686.61/mt vs May’s $877.22/mt, −21.7% MoM, +22.7% YoY) as the Hormuz war premium unwound: the US-Iran MoU took effect mid-month, Gulf exports recovered toward 75% of prewar levels, and Brent fell to ~$72/bbl by 28-Jun, the lowest since 27-Feb. W3 was the breakdown week (−8.9% WoW), aligning with the MoU entering force, before a month-end bounce off the $621.75/mt low signalled stabilization rather than a fresh leg lower. The bid-side flipped to dominant (buy/sell 1.19 vs May’s 0.61) as buyers stepped in at the floor. Crude normalized faster than naphtha as Gulf flows resumed ahead of product, lifting both cracks from deep negatives to positive by month-end (vs Dated −$12.13 to +$1.99/bbl), while the LVN premium widened to +$95.48/mt on summer gasoline-blending pull and soft petchem demand capped the benchmark. Front backwardation held but compressed (M1-M2 avg +$13.38/mt vs +$38.20/mt). The residual Strait premium and the naphtha-crude crack are the levers into July.
Market Activity
- 65 bids vs 54 offers, 4 trades across 123 transactions; buy/sell ratio 1.19 vs May’s 0.61
- The regime flipped from offer-heavy to bid-heavy: May’s offer-side dominance (87 offers, sellers leaning into the crash) reversed as June prices found a floor and buyers stepped up.
- Intermediary repositioning drove the shift: the prior month’s dominant seller moved to the bid, consistent with short-covering and relative-value buying rather than directional selling.
- A petrochemical cracker operator featured among the top buyers, a genuine consumer-coverage signal at the lower flat price; producer-side selling (an NOC trading arm) led the offer stack as resumed Gulf flows were marketed, flow rather than distress, validating the month-end stabilization.
Price Action
- Opened $781.25/mt (1-Jun, also the monthly high), closed $653.75/mt (29-Jun); avg $686.61/mt vs May’s $877.22/mt (−21.7% MoM), +22.7% YoY vs Jun-25’s $559.79/mt.
- Monthly low $621.75/mt (24-Jun); intra-month range $159.50/mt, down from May’s $259/mt as spike volatility faded.
- Largest single-day move −$50.25/mt on 4-Jun (from $754.75/mt), a naphtha-specific weak session that also marked the crack trough.
- W3 was the breakdown, coinciding with the US-Iran MoU entering force (17–18 Jun); the slide ran W1–W4 and troughed 24-Jun before a modest month-end bounce.
Cross-Market Dynamics
- Crack vs Dated Brent averaged −$8.89/bbl (vs May −$8.97, flat MoM) but recovered within June from −$12.13 (open) to +$1.99/bbl (close); narrowest −$19.39 on 4-Jun. Crack vs Brent Futures averaged −$7.80/bbl, recovering −$9.23 to +$0.55.
- The crack recovery reflects crude normalising faster than naphtha: Gulf flows resumed ahead of product as the Strait reopened, pulling Brent to ~$72/bbl by 28-Jun (IEA, EIA), while naphtha held on product demand.
- LVN diff widened to +$95.48/mt avg (from +$86.26 May), opening +$103; summer gasoline blending pulled light virgin naphtha from cracker feed, richening the light grade vs the CIF benchmark.
- N+A Heavy diff firmed to +$50.14/mt avg (from +$38.26 May), closing +$58 on aromatics and reforming demand.
- Petchem pull stayed soft: ethane-based ethylene margins held above naphtha with the premium widening post-war (IEA), capping cracker demand and deepening the unwind even as gasoline and aromatics supported specific grades.
Cross-Regional Dynamics
- Japan CIF Swaps averaged $702.74/mt (vs May $895.96), closing $652; the East-West spread (Japan minus NWE) narrowed to ~+$16/mt from ~+$19/mt.
- Both basins repriced on the same war-premium unwind; the narrowing reflects soft Asian petchem demand and Chinese export pull-back absorbing regional volumes, limiting the eastern premium even as freight normalised.
- A flat-to-narrowing arb keeps westbound replacement uneconomic; a widening is the first signal of renewed eastbound pull.
Curve Structure
- M1-M2 opened +$24.00/mt (1-Jun), closed +$19.50/mt (29-Jun); avg +$13.38/mt vs May +$38.20, a ~65% compression in the front spread.
- Spread troughed +$6.25/mt on 15-Jun, coinciding with the W3 breakdown, before recovering; backwardation held at month-start and month-end, indicating prompt balances stayed tighter than the curve as the war premium left.
- Compression of front backwardation, not a flip to contango; only the M1-M2 prompt spread is assessed (M1-M6, M1-M12 not in the GX curve).
Price Volatility
- CV fell to 6.88% (Jun) from 8.69% (May), well below the March peak of 14.12%, tracking the narrower range ($159.50/mt vs $259/mt).
- Still ~3x the Jan–Feb calm (2.19–4.87%): the complex has not returned to pre-war stability, with residual two-way risk around Strait-reopening headlines.
- Models recalibrated to the March–May 6–14% regime will over-state risk into July if de-escalation holds; the CV trajectory is the recalibration signal.
Something To Watch
- Strait of Hormuz transit normalization:
- Observation: Gulf exports restored to ~75% of prewar levels by late June, Brent ~$72/bbl (28-Jun).
- Why it matters: full normalisation removes the residual premium and drags naphtha lower; a re-closure (as briefly seen around 22-Jun) spikes the complex.
- What to monitor: daily Strait transit/vessel counts; Ras Tanura loadings; the 60-day ceasefire implementation timeline.
- Naphtha-crude crack:
- Observation: crack turned positive by month-end (vs Dated +$1.99/bbl, 29-Jun).
- Why it matters: a sustained positive crack signals product demand outpacing crude normalisation; a relapse to deep negatives signals petchem weakness reasserting.
- What to monitor: weekly crack vs Dated Brent; ethane-naphtha cracker margin spread.
- LVN premium / gasoline pull:
- Observation: LVN diff at +$95.48/mt avg, near cycle highs
- Why it matters: the light-grade premium is the gasoline-season signal; sustained widening confirms blending pull, compression flags the seasonal pull ending and renewed petchem competition for light ends
- What to monitor: LVN diff weekly; summer gasoline crack; reformer/blending economics
Note: All figures, prices and market activity referenced in this report are based on the period 1 – 29 June 2026.
