Red Sea attacks land: naphtha holds its bid on firm cracker demand and open Western arbs

Deep Dive Summary:

• Houthis have now claimed attacks on two Saudi oil tankers in the Red Sea, with several other vessels diverting or pausing before crossing Bab el-Mandeb, pushing Brent to new month highs.
• The second chokepoint is now materially compromised, with the Red Sea attacks threatening the southbound Yanbu flows that reach Asian refiners and forcing Cape reroutes that add weeks and freight to any West-to-East voyage, tightening an already stretched clean tanker market further.
• Naphtha arbs into Asia from both MED and Houston remain open with steam cracker demand still firm, keeping the eastbound pull alive and confirming the physical bid behind the paper repricing of the past two weeks as frozen AG supply keeps the structural deficit in place.
• Gas-nap has weakened as the strength of the arb to Asia pulls naphtha into the cracker pool and away from blending, with the move dragging E5 blend and E10 into a deep negative territory.

The market is now pricing a two-chokepoint disruption with no diplomatic track in sight. The escalation into a twelfth night and the first confirmed Houthi strikes on Saudi tonnage in the Red Sea remove any lingering assumption that Bab el-Mandeb offers a workaround to the Hormuz closure.

For naphtha specifically the read is constructive and consistent with the setup that built through the middle of the month: AG loadings remain frozen, the August arb slate into Asia is the thinnest of the year, and the only replacement channel, Western barrels via the Med and the USGC, now carries Cape-routing freight and war-risk premiums on top of the FOB repricing.

The delivered cost of every marginal barrel into Asia keeps climbing, which is exactly what sustains the E/W and the backwardation even on days without a fresh supply headline.

(Arbitrage margins showing double digits from MED and US into the East of Suez for September deliveries)

(Paper markets keep trading in war mode)

The clean tanker math continues to favour early Asian buying. With Bab el-Mandeb attacks forcing Cape reroutes, voyage times from the Med and USGC push fixtures concluded now well into Q4 delivery, and war-risk insurance adds a structural layer to delivered cost across both basins.

Every week the fixture lists stay thin against frozen AG loadings is another week of deferred demand stacking up against a supply picture that cannot improve while both straits are compromised.

The competition for Med barrels between the eastbound arb and European cracker demand keeps Med premiums firm, and Western sellers retain the pricing power that a two-outlet market confers.

(Physical premiums tightening in Europe already, USGC still lagging)

The gas-nap is finally weakening as naphtha is bid strongly enough as cracker feed that it is being pulled out of the gasoline blend pool, dragging E5 and E10 blend margins negative as European blend costs rise.

In New York, the Rotterdam naphtha arb has closed too, which lifts harbour blend economics and sets a high floor under gasoline crack values for as long as Asian cracker demand holds. The whole complex is being organised around a naphtha molecule that the East cannot get from its usual AG source, and every downstream market is adjusting to that scarcity.

(Gas-nap has finally decreased by $40/mt as naphtha market is more exposed to the current disruptions. The tight gasoline balance in the West threatens with a new recovery soon)

Pro/Nap East sits at -$120/mt, it remains deeply negative and close to the lows of the range seen over recent months. The US propane inventories remain well above seasonal average and Mont Belvieu continues to lag the wider complex, keeping propane cheap relative to naphtha.

That relative cheapness is doing real work, with flexible crackers across Asia maximising C3 and C4 feed to defer spot naphtha purchases, which is now the only reason holding back the physical naphtha scramble.

The medium-term bias stays lower on high US inventories and expanding USGC export capacity, with the main risk to that view being a prolonged AG closure that eventually cuts Gulf LPG exports alongside naphtha and narrows the gap.

(Pro-nap has weakened recently on tighter naphtha market, but will US incremental LPG exports be enough to keep the trend?)

Risk stays firmly to the upside. Brent over $100, two chokepoints compromised, the thinnest August arb of the year and cracker demand strong enough to pull naphtha out of the blend pool.

The open Rotterdam and Houston arbs are doing the work of channelling Western supply East, and the confirmation to watch remains the fixture lists and any sign that Red Sea transit is being restored.

About the Author
Jorge is Sparta’s Commodity Owner for gasoline and light ends. He began his career as a financial analyst at BBVA before spending four years as a naphtha analyst at Repsol. His market analysis is cited by Reuters, Bloomberg, and Financial Times.
Connect: LinkedIn

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