US stocks declined 0.6% on Tuesday as investors reacted to stalled peace negotiations between the United States and Iran and monitored Federal Reserve chair nominee Kevin Warsh’s testimony.

Key Points

• The Dow Jones, S&P 500, and Nasdaq Composite each fell 0.6% during Tuesday's trading session.
• President Trump announced an indefinite extension of the ceasefire with Iran, citing a fractured government in Tehran.
• Apple shares dropped over 2% following the announcement that CEO Tim Cook will step down, with John Ternus named as his successor.
• Oil prices rose approximately 4.5% as the US delayed a diplomatic trip to Pakistan, fueling concerns over potential inflation.
• Federal Reserve chair nominee Kevin Warsh testified before the Senate, explicitly denying he would act as a "sock puppet" for the president.
• Technology and semiconductor sectors maintained strong momentum, with the XLK and SOXX ETFs extending their winning streaks to 15 sessions.

Why it Matters

Market volatility reflects heightened investor anxiety regarding the intersection of geopolitical instability in the Middle East and upcoming shifts in monetary policy. The combination of rising energy costs and leadership transitions at major corporations like Apple creates a complex environment for traders navigating record-high valuations.