SINGAPORE — September 8, 2026. Commodity shipping through the Strait of Hormuz slowed again at the start of the week after Iran threatened retaliation for any new U.S. attacks, according to Kpler data reported by Reuters and Al-Monitor. Only seven commodity vessels transited the strait on Monday, down from eight the previous day—traffic levels that remain near the lows of the past ten days and far below the pre-war norm when roughly a fifth of global oil supplies moved through the waterway.
The slowdown followed a weekend of kinetic escalation: U.S. Central Command said American forces struck three Iranian oil tankers linked to what it called an IRGC shadow network, including vessels near Kharg Island and Jask and one destroyed in the Gulf of Oman. Iranian officials answered with missile claims against U.S. warships and fresh warnings that Gulf energy infrastructure—including U.S. oil and gas interests—was “exposed.” Supreme National Security Council secretary Mohsen Rezaei had already said Tehran would announce a new restricted maritime zone outside Hormuz and maps for an Oman-linked corridor within days.
Markets and shippers are reading the same signal in different ways. U.S. Energy Secretary Chris Wright has insisted that Navy-escorted flows and pipelines around the strait have restored a large share of pre-conflict volumes. Kpler’s single-digit daily counts tell a narrower commercial story: fewer AIS-visible commodity ships are willing to risk the choke point after Tehran’s latest threats. Some vessels may also be sailing with transponders off, which would understate the true count but would itself be evidence of fear.
Meanwhile, Bab el-Mandeb traffic jumped—twenty-nine commodity vessels on Monday versus seventeen the day before—suggesting some cargoes and captains are rerouting through the Red Sea corridor even as that lane carries its own Houthi risk. For insurers, charterers, and OPEC+ exporters, the question is no longer whether Hormuz is “open” in a legal sense. It is whether enough commercial ships treat it as usable. On Monday’s data, the answer was still: barely.
