The Strait of Hormuz is not closed — that, according to a Bloomberg analysis, is the central fact oil traders should hold onto amid escalating talk of an Iranian blockade. Whatever the rhetoric from Tehran, the waterway that carries roughly a fifth of the world's seaborne crude has continued to function.

That distinction matters for anyone pricing Brent this quarter. Markets move on headlines about the 21-mile-wide channel between Iran and Oman, but a closure — partial or total — has not occurred. Fear of shutdown, not shutdown itself, is what has moved paper barrels.

What separates rhetoric from closure?

A genuine closure would mean warship escorts, insurance markets seizing up, and tanker owners refusing voyages. None of those conditions has materialized, Bloomberg's assessment indicates. Tanker owners and charterers have continued to load and sail.

For downstream readers the implication is straightforward. Refiners in Asia — the primary destination for crude moving through Hormuz — have kept booking cargoes. Terminals on the Gulf side of the strait have kept loading.

Why does the distinction matter for refiners?

Refinery planners work on cargo arrival schedules, not on commentary. If Hormuz were genuinely shut, planners at Gulf Coast and Asian complexes would be scrambling for alternative slates — Atlantic Basin grades, US exports, West African crude. So far the calculus has not forced that shift.

The price signal tells the same story. A full closure scenario would put double-digit premia into freight rates and war-risk insurance for Gulf calls. Traders have instead treated the risk as a tail event, per Bloomberg's framing — a risk premium in the price, not a physical disruption on the water.

What is the watch item?

The item to monitor is simple: actual tanker transit through Hormuz. Statements from Tehran about closing the strait have recurred for years; the operational reality has consistently lagged the rhetoric. Should war-risk insurers begin declining Gulf voyages, or should loadings at Ras Tanura, Fujairah or Basrah Oil Terminal slip, that would mark the shift from talk to disruption.

Until then, the market's working assumption — shared by the Bloomberg analysis — is that the world's most important oil chokepoint remains open for business.