Weekly Market Insights | U.S.-Iran Agreement Sends Oil Tumbling, Stocks Rising

Stocks rose over the shortened trading week as investors digested developments in the Middle East while the Fed held short-term rates steady.

The Standard & Poor’s 500 Index rose 0.93 percent through Thursday’s close, while the Nasdaq Composite Index gained 2.43 percent. The Dow Jones Industrial Average climbed 0.71 percent. The MSCI EAFE Index, which tracks developed overseas stock markets, advanced 0.96 percent over the same four-day period.1,2

Dow Hits 52,000

The week began with stocks rising and oil prices falling after the White House announced that the U.S. and Iran had reached an agreement over the weekend.

All three major averages climbed on Monday, ranging from 1 to 3 percent gains, while crude prices declined by roughly 5 percent.3

Tuesday was a split-screen performance. The Dow Jones Industrials rose to a record intraday high as oil prices fell, while the S&P 500 and Nasdaq slipped as investors rotated out of tech and into cyclical stocks such as banks and industrials. The Dow Industrials crossed the 52,000 threshold for the first time.4

The S&P and Nasdaq opened higher midweek as tech stocks recovered, and amid news that consumer spending unexpectedly rose in May. Investors also appeared to be in a risk-on mood as they awaited the Fed decision, confident that the Federal Open Market Committee (FOMC) would hold rates steady.5

Then, on Thursday, stocks rebounded, led by chipmakers and the AI trade. The S&P 500 capped its 11th winning week of the past 12.6

Footnotes And Sources

1. WSJ.com, June 18, 2026
2. Investing.com, June 18, 2026
3. CNBC.com, June 15, 2026
4. CNBC.com, June 16, 2026
5. WSJ.com, June 17, 2026
6. CNBC.com, June 18, 2026