Gulf Oil Flows Drop 37% Below Prewar Average to 13M BPD as Japan Freight Hits $21 a Barrel | Tilt

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Gulf Oil Flows Drop 37% Below Prewar Average to 13M BPD as Japan Freight Hits $21 a Barrel

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Gulf Oil Flows Drop 37% Below Prewar Average to 13M BPD as Japan Freight Hits $21 a Barrel

Oil and petroleum product shipments from the Persian Gulf and Gulf of Oman dropped to a seven-day average of roughly 13 million BPD in late October, 37% below their 20.5 million BPD prewar average, according to provisional Kpler data that excludes Iran and Red Sea bypass routes. Even as exports slumped from a mid-October surge, Brent crude held near $110 a barrel as supertanker freight rates from the Gulf reached $36 a barrel to Singapore, $26 to the US, and $21 to Japan, where shipping costs are 15 times their $1.40 average in 2025.

If this story plays out

−0.8%Impact on the S&P 500 across 4 scenarios (−5.5% to +1.6%)

Scenarios

Each figure is the modeled move of the S&P 500 if the outcome occurs. For information only. Not investment advice.

If this story plays out

Scenarios

Story, if it plays out

4 ways this could read

Possible futures, not reported news · chances and moves from Tilt’s model

45%−0.6%
Prolonged Partial Disruption
Iran keeps pressure on Gulf shipping but avoids a full closure that would invite a larger U.S.-led military response. Tankers continue moving under naval escort, but insurance, fuel, and routing costs keep Gulf crude availability well below prewar levels.
Energy +2.2% · Consumer Cyclicals −1.4% · Industrials −1.1%
25%+1.2%
Maritime De-Escalation
Back-channel diplomacy through Oman, Qatar, and Japan creates limited guarantees for civilian oil tankers. Tehran preserves leverage but accepts monitored transit to avoid losing remaining buyers and provoking wider strikes.
Energy −2.9% · Industrials +1.8% · Consumer Cyclicals +1.6%
20%−4.4%
Direct Military Escalation
Further Iranian attacks on tankers or U.S.-linked cargoes trigger direct strikes on launch sites, radar, or IRGC naval assets. The immediate market reaction would be crisis-like because traders would price a risk of temporary Hormuz closure and broader U.S.-Iran conflict.
Energy +6.0% · Industrials −5.0% · Consumer Cyclicals −4.7%
10%+0.1%
Rerouting And Rationing
Governments and producers partially offset the Hormuz shock through pipelines, inventory draws, fuel switching, and refinery run cuts. This does not solve the conflict, but it caps near-term crude price upside by reducing spot demand for Gulf cargoes.
Consumer Services +0.4% · Energy −0.3% · Industrials −0.1%

Each figure is the modeled move of the S&P 500 if it happens. For information only. Not investment advice.

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