U.S. Equities Post Best First-Half Performance Since 2021

In the first six months of 2026 the Dow Jones Industrial Average rose 8.9 % (CNBC) and 8.6 % (Bay Street), its strongest half-year since 2021. The S&P 500 advanced 9.6 % (CNBC) versus 8 % (Bay Street), while the Nasdaq Composite posted a gain of more than 12 % (CNBC) and 11 % (Bay Street). The Russell 2000 added almost 22 % (CNBC), the broadest half-year increase for the small-cap index since 1991. Quarterly performance was similarly robust: the S&P 500 climbed 14.9 % (CNBC) and 14 % (Bay Street); the Nasdaq rose 21.4 % (CNBC) and 19.6 % (Bay Street); the Dow gained 12.9 % (CNBC) and 12.6 % (Bay Street) between April and June.

CNBC

The rally was anchored by semiconductor and AI-related stocks. Nvidia shares rose 2.6 %, Advanced Micro Devices added 7.7 %, and Intel advanced 6 %. Memory-chip makers Micron Technology and SanDisk each more than tripled in price. The VanEck Semiconductor ETF (SMH) climbed over 3 % on the day, reaching an 82 % year-to-date gain. A parallel factor was the de-escalation of hostilities between the United States and Iran, which eased crude-oil price volatility and removed a source of market uncertainty that had weighed on energy-sensitive equities earlier in the year.

CNBC

Chief Investment Officer Tim Holland of Orion emphasized earnings quality and interest-rate dynamics as the primary market drivers. He noted that “earnings matter more than just about anything, except for maybe interest rates,” and that “value stocks are working year-to-date, especially in June, as opposed to growth stocks.” Holland expects the bull market to remain broad-based for the remainder of 2026, provided no new escalation occurs in the Iran conflict.

CNBC

Analysts flagged two lingering risks. First, the sustainability of AI-related capital expenditures remains uncertain, with some investors questioning whether current spending levels can be maintained. Second, elevated interest rates pose a structural headwind for high-growth technology firms, potentially curbing the momentum of AI-centric equities.

CNBC

The two primary sources differ on several performance metrics. CNBC reports Dow growth of 8.9 % versus Bay Street’s 8.6 %; S&P 500 gains of 9.6 % versus 8 %; and Nasdaq advances of “more than 12 %” versus 11 %. Quarterly gains for the S&P 500 and Nasdaq also vary by up to 0.9 % and 1.8 % respectively. The Russell 2000’s 22 % rise appears only in the CNBC data set.

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• “For me the lesson of the first half of 2026 is that earnings matter more than just about anything, except for maybe interest rates,” — Tim Holland, Chief Investment Officer, Orion

CNBC

• “The world continues to focus on the AI capex build out and AI trade, and I think rightly so, but if you look under the hood of the market, what's been working year to date, and at least for the month of June as well is value stocks as opposed to growth stocks,” — Tim Holland, CIO, Orion

CNBC

• “Interest rates are probably going to be a little elevated, which tends to be a headwind for higher price growth stocks, but tends to be a tailwind for economically sensitive stocks and the like.” — Tim Holland, CIO, Orion

CNBC

• “Stocks rose on Tuesday, boosted by sharp gains in chips, as Wall Street wrapped up a strong first half and second quarter.” — CNBC Market Update

CNBC

• “While the major averages hit all-time highs, they did so in spite of wild swings in energy prices due to the Iran war as well as uncertainty around the sustainability of AI spending.” — CNBC Market Update

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Looking ahead, analysts anticipate that market breadth will depend on the trajectory of U.S. interest rates, continued AI capital spending, and any resurgence of geopolitical tension in the Middle East. A stable policy environment could sustain the current value-oriented rotation, while renewed hostilities or a sharp rate hike would likely reverse the recent gains. The second half of 2026 will therefore be shaped by macro-economic policy decisions and the durability of AI-driven demand.

CNBC