The S&P 500 has extended its historic weekly winning streak to nine consecutive weeks, propelled by a relentless artificial intelligence (AI) rally that has left other sectors in the dust. While the broader market celebrates repeated records, the divergence between tech giants and traditional industries is widening dramatically.
An Unprecedented Surge
The S&P 500's rapid rise history just entered rare territory, closing higher for a ninth straight week—a feat achieved only 10 other times since 1957. Over an exceptional eight-week window leading into late May, the index advanced 17.3%, marking its second-best eight-week stint ever.
This momentum carried into early June as a ninth-consecutive day of gains secured the index's longest daily winning streak in over a year.
The broader rally has pushed the Dow Jones Industrial Average and the Nasdaq Composite to fresh all-time highs alongside the S&P 500, marking the first time since February 2017 that all three indexes closed at records for five sessions in a row.
The Divergent Market
However, the underlying mechanics of this boom reveal a top-heavy market. Massive capital spending for AI infrastructure—evidenced by Hewlett Packard Enterprise Co.'s (NYSE:HPE) soaring server demand, Marvell Technology Inc.‘s (NASDAQ:MRVL) record-breaking day, and Alphabet Inc.'s (NASDAQ:GOOG) (NASDAQ:GOOGL) massive $80 billion stock sale—has consolidated market power into a single sector.
This hyper-focus on AI has created an undiversified environment for portfolios. “It's all about tech. It's thankless to own the other sectors now,” Jay Hatfield, chief executive officer and portfolio manager at Infrastructure Capital Advisors, told WSJ. “Everything that's working is AI-related.”
Headwinds On The Horizon
While history suggests the index could post an average 12-month return of 10% to 16% following such historic streaks, there is some warranted caution.
Surging inflation driven by geopolitical energy disruptions could force the Federal Reserve into a surprising pivot toward interest rate hikes later this year.
With the S&P 500 trading at a premium of 21.2 times forward earnings, any shift in monetary policy could trigger a sharp consolidation.
How Have Markets Performed In 2026?
The S&P 500 index has advanced 10.95% year-to-date. Similarly, the Nasdaq Composite index was up 16.60%, and the Dow Jones gained 6.05% YTD.
The SPDR S&P 500 ETF Trust (NYSE:SPY) and Invesco QQQ Trust ETF (NASDAQ:QQQ), which track the S&P 500 and Nasdaq 100, respectively, closed higher on Tuesday. The SPY ended up 0.14% at $759.57, while the QQQ was higher by 0.46% to $746.16.
Meanwhile, Dow tracker, State Street SPDR Dow Jones Industrial Average ETF Trust (NYSE:DIA), closed 0.51% higher on Tuesday. In premarket on Wednesday, SPY was down 0.049%, DIA declined by 0.27%, but QQQ was up 0.054%.
Disclaimer: This content was partially produced with the help of AI tools and was reviewed and published by Benzinga editors.
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