The S&P 500 and Nasdaq Composite indices closed at new all-time highs on Wednesday, April 15, 2026, fueled by growing optimism that diplomatic negotiations could soon end the U.S.-Iran conflict. The S&P 500 rose 0.80% to close at a record 7,022.95, while the tech-heavy Nasdaq Composite climbed 1.59% to 24,016.02, marking its 11th consecutive day of gains. This week alone, the S&P 500 is up 3% and the Nasdaq has added nearly 5%, effectively erasing losses incurred during the recent geopolitical tensions.
The rally's speed has become a notable story. The Nasdaq's Relative Strength Index (RSI) surged from oversold territory (below 30) on March 30 to overbought territory (above 70) in just 11 trading days. This represents the fastest such swing in data dating back to the early 1980s. Over this 11-day winning streak—its longest since November 2021—the Nasdaq has gained 15%.
The surge was largely driven by the technology sector, which rose 2.08%. Key performers included the iShares Expanded Tech-Software Sector ETF (up over 3% on the day), Microsoft (up nearly 4%), Salesforce (up about 3%), Datadog (up 7%), and ServiceNow (up 6%). Tesla staged a particularly strong comeback, closing nearly 8% higher at $391.95 after CEO Elon Musk announced progress on the company's AI5 chip and plans for two advanced chip factories in Austin, Texas, in partnership with SpaceX and Intel.
The improved market sentiment was directly tied to developments in the Middle East. President Donald Trump stated in a Fox Business interview that the war with Iran is "very close to being over," though he emphasized a final resolution depends on a successful negotiated deal. A second round of negotiations is scheduled to resume in Islamabad this week, with Vice President JD Vance leading the U.S. delegation.
This bullish momentum spilled over into the cryptocurrency market. Bitcoin climbed 1.07% to surpass the $75,000 mark, extending a two-week rally that has seen the cryptocurrency gain nearly 10% in value. Analysts like Tom Lee of Fundstrat have identified the current environment as a tactical entry point for investors and anticipate that the next phase of the rally will be led by major tech stocks, software, and crypto assets like Bitcoin and Ether.
