After nearly two months of sharp volatility, major U.S. stock indexes have staged a powerful breakout, with the S&P 500 reaching a new all-time high, rewarding investors who held their positions. This rally, led by tech giants and amplified by a wave of short-covering, has swiftly shifted market sentiment from extreme pessimism to widespread chasing.
The S&P 500 closed at a record high on Tuesday, marking its 25th record close this year and its first since June 2. At the same time, the Dow Jones Industrial Average and the small-cap Russell 2000 index also hit fresh highs, while the iShares MSCI ACWI ETF, which tracks global equities, set a new record. The Nasdaq surged 3.5% in a single day, its largest gain since May 2025, and has rebounded nearly 10% from its low of last week.
The immediate catalysts for this rally are multifaceted: U.S. Treasury Secretary Scott Bessent told CNBC that an agreement with Iran could be reached "within a day or two," sending oil prices sharply lower by about 6%. This, in turn, eased inflation expectations, with bond yields falling 3 to 5 basis points, providing strong support for the stock market.
Meanwhile, the Magnificent Seven gained nearly 10% over four days, with Amazon.com returning to a $3 trillion market cap and NVIDIA reclaiming a $5 trillion valuation. The full-scale recovery of the tech sector has been the core driver of the index breakout.
42-Day Wait: The Longest Interval to a New High
According to Dow Jones Market Data, the S&P 500's current record high came 42 trading days after its previous all-time closing high, marking the longest gap since the 53-day interval ending April 16 of this year. That April 16 breakout was the culmination of the index's fastest V-shaped recovery on record.
During this period, the market's apparent maximum drawdown was not severe—the intraday low on June 9 was only 4.9% below the all-time high. However, this figure masks the true pain beneath the surface: AI-related sectors like semiconductors, electric power, and industrials were hit hard, with stock correlations falling to multi-year lows. A large number of individual stocks moved in opposite directions to the broader market, creating extreme internal divergence.
The Roundhill Magnificent Seven ETF outperformed the S&P 500 by about 5 percentage points over the past two trading days, the largest two-day excess return in the ETF's history. The sustained weakness of large-cap tech stocks had previously been the key factor suppressing the S&P 500 and Nasdaq.
'Leopold Liquidation' Becomes a Market Bottom Signal
The turning point for the market was closely tied to a forced block trade. The hedge fund Situational Awareness, run by 20-something AI prodigy Leopold Aschenbrenner, was forced late last month to sell most of its public market stock positions in a block trade to Ken Griffin's Citadel due to margin call pressure.
Since then, multiple technical and sentiment indicators have turned positive. The Nasdaq has rebounded nearly 10% from the "Leopold low," and the market has moved from a one-month low to a new all-time high in just five trading days.
A senior equity volatility trader commented, "They went from 'get out now' to 'pile in' in four days... This is not sustainable."
Michael Monaghan, portfolio manager of the Founders 100 ETF, stated, "As they say, bull markets climb a wall of worry, and we've certainly had plenty of worry over the past few weeks. But the forced selling by Situational Awareness seems to have put a floor in the market, and I think we're seeing all the data points starting to align."
Technical Breakout and Sector Rotation Coincide
On a technical level, the S&P 500 on Tuesday broke strongly out of a pattern known as a "flag" or "wedge," typically seen as a bullish signal. Adam Turnquist, chief technical strategist at LPL Financial, said, "We broke through 7,600—that's the most important thing. That's the top of the range."
The Nasdaq also reclaimed its 50-day moving average, and the momentum factor has rebounded over 22% from its low last week. AI-related themes—including optics, AI infrastructure, semiconductors, data centers, and storage—led the rally across the board.
Notably, the sector divergence that had plagued the market also showed clear improvement: tech giants, software stocks, and semiconductor stocks all rose in tandem on Tuesday, breaking the previous pattern of alternating dominance and divergence.
According to analysis by Goldman Sachs trader Peter Callahan, as cited by ZeroHedge, four key factors underpin this rally: cleaner positioning (following significant deleveraging), improved technicals (momentum factor rebound and reduced leverage ETF exposure), more reasonable valuations (the Nasdaq 100's forward P/E is about 10% below its five-year average), and improved visibility into fundamentals (better expectations for return on capital following last week's earnings season).
Short-Covering and FOMO Sentiment Dominate the Rally
The structural characteristics of this rally are also noteworthy. Goldman Sachs data, cited by ZeroHedge, indicates that this is the largest short-covering rally in the past four days, the biggest since Thanksgiving, with the market exhibiting a classic "Spot Up, Vol Up" dynamic.
Additionally, 0DTE option traders are heavily buying straddles and strangles, betting on further volatility increases.
Goldman Sachs liquidity strategist Lee Coppersmith noted that demand for short-term index call options has been extremely strong this week, primarily focused on the S&P 500 and Nasdaq. After a massive de-risking operation in July, the one-day decline in the S&P 500 25-delta put/call skew was the largest since November 6, 2024 (the day after Trump's election victory).
Despite the high market sentiment, Goldman Sachs' trading desk also noted that Tuesday's total volume was down 7% from the five-day average, with activity scoring only 4 out of 10, suggesting this rally is not a broad-based, volume-driven breakout, and the sustainability of the chase remains in question.
Meanwhile, while oil prices fell sharply due to expectations of an Iran agreement, Qatar cautioned that no formal deal is yet in place. Rebecca Babin, senior energy trader at CIBC Private Wealth Group, pointed out that "this is a market that continues to reprice risk based on the prospect of flow restoration rather than the details required to achieve it," warning that the upside momentum lacks sustainability, while the downside is often more rapid.
Analysts believe that for investors who held their positions, this rally is undoubtedly a reward for patience. However, whether the market can maintain its high level after the FOMO fades will still depend on the progress of trade negotiations, oil price trends, and whether expectations for AI investment returns can continue to be realized.
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