Markets eye U.S.-Iran talks, Hormuz Rrisk and de Guindos

Global markets focused on U.S.-Iran negotiations and tensions in the Strait of Hormuz after the first round of talks ended without an agreement and the U.S. imposed a blockade on Iranian ports. Investors also awaited remarks from European Central Bank Vice President Luis de Guindos and U.S. existing home sales data.

The first round of negotiations concluded with no deal. Both delegations indicated they remain open to further talks. The U.S. blockade of Iranian ports followed the meeting and has increased the chance that the ceasefire could be breached.

European trading opened with a light economic calendar and several central bank speakers on the schedule. De Guindos, a voting member of the ECB, is set to speak at 12:00 GMT/08:00 ET. Market participants expect central bank commentary to address inflation and geopolitical uncertainty.

In the U.S. session, existing home sales figures are due. Economists forecast a muted market reaction and do not expect the release to change the Federal Reserve's policy trajectory.

Traders cited the Strait of Hormuz as the primary source of market attention. The waterway handles a large share of global oil shipments, and any interruption to transit could affect energy supply. Reports of clashes or supply disruption have already moved energy contracts and prompted flows into traditional safe-haven assets.

Market activity reflected caution. Portfolios shifted toward lower-risk assets and energy markets showed heightened volatility. Trading desks noted that further reports of hostilities or shipping disruptions would prompt larger moves in commodity and currency markets.

Background: the Strait of Hormuz is a key route for crude oil exports and refined fuel shipments. While the first round of talks did not produce an agreement, officials' willingness to meet again leaves open a diplomatic channel. Markets will monitor diplomatic developments and central bank comments for signals on how geopolitical events may affect energy supplies and economic growth in the near term.