Geopolitical developments and renewed market volatility combined to steer trading on Wednesday, as a spike in tensions between the United States and Iran pushed oil prices up while a continued selloff in semiconductor names weighed on equity indexes across regions.
The immediate catalyst was fresh military exchanges between U.S. forces and Iranian targets following recent attacks on oil tankers in the Strait of Hormuz. U.S. strikes on Iranian positions took place after several tankers were struck by projectiles in the narrow Gulf waterway. Iran subsequently launched attacks on U.S. bases in the region. In public remarks, President Donald Trump said the memorandum of understanding between the two sides was "over".
Energy markets
Crude futures reacted quickly. Oil settled about 3% higher on Tuesday following the military exchanges and after Washington moved to revoke a sanctions waiver on Iranian oil that will take effect on July 17. Prices pushed higher again into Wednesday trading, with Brent trading above $78 per barrel early in the session.
Traders are likely to be nervous about the immediate supply uncertainty, though many may regard the flare-up as a temporary disruption rather than the start of sustained large-scale hostilities. Still, the combination of attacks on tankers, retaliatory strikes and the loss of a sanctions waiver sharpened short-term risk perceptions in oil markets.
Equities and semiconductors
Equity markets felt the strain. Semiconductor stocks continued to sell off on Wednesday, amplifying pressure on major indexes in Asia and the United States. The SOX chip index slipped nearly 5% in U.S. trading on Tuesday, and the Nasdaq fell by more than 1%.
New entrants to benchmark indices were not immune: SpaceX fell about 7% on its first day as a Nasdaq 100 constituent. In South Korea, shares of major chipmakers such as Samsung and SK Hynix closed lower again on Wednesday despite Samsung reporting notably strong results the prior day.
South Korea's KOSPI index, which is heavily weighted toward chip-related names, plunged more than 5% on Wednesday and has now dropped roughly 20% from its record close in late June - a decline that places the benchmark in bear market territory despite its exceptional cumulative gains earlier this year.
Monetary policy and other market moves
Monetary policy developments also influenced currency and bond markets. The New Zealand dollar jumped after the Reserve Bank of New Zealand raised its policy rate by a quarter-point to 2.5% to combat inflation, noting that some further tightening "is likely to be required." The move served as a reminder that price pressures remain a live concern globally.
Bond prices fell broadly on Wednesday amid the risk-off tone across markets.
On the U.S. policy front, market participants are awaiting the release of minutes from the Federal Reserve's June policy meeting. Those minutes predate the recent uptick in transits through the Strait of Hormuz and the related tensions, underscoring how quickly geopolitical events can alter the context for economic reports.
Chart of the day
South Korea's KOSPI index fell more than 5% on Wednesday, marking a decline of roughly 20% from a record close in late June and signaling bear market territory even after substantial gains this year.
Events to watch
- Release of minutes from the Federal Reserve's June policy meeting
- U.S. 10-year note auction (6 p.m. EDT)
- Second day of the NATO summit in Ankara, Turkey
With oil prices elevated, semiconductor stocks under pressure and central banks still active, markets are navigating a mix of geopolitical risk, sector-specific volatility and monetary policy signals. Traders and investors will be watching upcoming data and scheduled events closely for further guidance.
For perspective on related market topics, readers can consult mid-week commentary and the latest episodes of the Morning Bid podcast, which discuss major developments in finance and markets on a daily basis.