U.S. stocks in the first half of 2026 can be described as "defying gravity." Despite facing geopolitical conflicts in the Middle East and persistent inflation concerns, the market has demonstrated remarkable resilience. 

Since the beginning of the year, the S&P 500 index(SPX.US)  has recorded a significant cumulative gain of approximately 9%, firmly standing in a new era above the 7,400-point mark and repeatedly hitting historic highs. 

This outstanding performance aligns with the Wall Street consensus formed late last year: driven by expanding AI capital expenditure, improving macro liquidity expectations, and broadening earnings growth, the upward trend of U.S. stocks is expected to continue.

Target Prices Raised Intensively: Wall Street's Highest Aims for 8,100

As corporate earnings have been verified and macroeconomic risks have partially receded, major financial institutions on Wall Street have recently raised their year-end 2026 target prices for the S&P 500 index in their mid-year outlooks.

The institutional forecast targets for the end of 2026 are organized below(Data Cut-off Date: June 29, 2026):

Core Drivers: Substantial Earnings Improvement and the AI Supercycle

The core driving force behind the collective upgrades mainly comes from strong, substantial improvements in corporate earnings and the AI capital expenditure "supercycle." This wave of gains does not rely solely on valuation premiums, but is supported by real profit growth driven by the demand for AI infrastructure, such as semiconductors and data centers. At the same time, the phased easing of geopolitical risks and recent technical corrections have cooled overheated market sentiment, further clearing upward space for the market.

Citi, Oppenheimer, and BCA Research are the most optimistic. Citi believes the current prosperity has transcended traditional economic cycles into a rare "capex supercycle" currently in its middle stage, expressing high confidence that corporate earnings will continue to beat expectations. BCA Research emphasizes that this target upgrade is entirely based on "substantial improvements in corporate earnings," rather than counting on higher valuation premiums.

Goldman Sachs' analysis concludes that steady corporate earnings expansion has been the core engine pushing the S&P 500 higher. Although high operating costs and weak consumer spending constitute macro headwinds, AI infrastructure-related companies are expected to contribute about half of the index's earnings growth this year, building a strong moat against risks. However, Goldman Sachs also warned that recent gains in the core semiconductor sector have partially overdrawn future expected returns.

Wells Fargo pointed out that mitigating macro risks cooled previous stock market sell-offs, and stabilizing market sentiment has created conditions for a new round of AI trading. The bank believes that under potential loose monetary policy, equities will become the "best inflation hedge tool." UBS and RBC, proceeding from fundamentals, affirmed the massive capital demand brought about by the construction of AI data centers.

Hidden Worries Behind the Optimism

On the other hand, JPMorgan, Barclays, and the Stifel Financial Group, which also remain positive, have turned more of their attention toward potential hidden reefs ahead.

JPMorgan reminded that while economic resilience and the AI boom have driven up earnings, consecutive strong results have raised market expectations, making it increasingly difficult to surpass performance thresholds in the future, stating that “the path upward is destined not to be linear.” Furthermore, a surge in stock issuance in the coming quarters and the prospect of tightening monetary policy could both pressure the current valuation system.

Stifel strategist Thomas Carroll explicitly stated that the current concentration of U.S. stocks has spiked to its highest level in 40 years. Capital is quietly showing signs of rotating out of overcrowded top-tier stocks and moving into equal-weighted and cyclical industries.

Outside of the generally high spirits, some institutions chose restraint or defense. HSBC and Ameriprise gave relatively conservative forecasts, primarily worrying that market gains are excessively concentrated in a few giants. An HSBC strategist stated, "Although earnings remain strong, market sentiment is relatively unstable," adding that the breadth of the recent rally has been relatively narrow.

Meanwhile, Paul Ciana, Head of Technical Research at Bank of America, issued a strong bearish warning. He pointed out that the S&P 500 has accumulated a gain of nearly 17% since its March low, but since touching its recent high on June 2, the upward momentum has shown clear signs of exhaustion and "excessive overvaluation." The market faces a very high probability of undergoing a sharp "three-wave correction" during the summer, where the index could plunge to as low as 6,850 points. He urged investors to adopt a "defensive stance" between July and September and to be vigilant against "bull traps."

Subsequent Risks to Monitor

As a JPMorgan strategist noted: "The path upward will not be linear because the market needs to overcome various obstacles." Looking ahead to the second half of 2026, investors need to closely guard against several major potential risks:

Inflation Rebound and the Federal Reserve Policy Game: Although the geopolitical situation has eased, hidden worries remain. Barclays warned that an overheated labor market and fears of an inflation rebound could trigger a repricing of Federal Reserve interest rate hikes, noting that "yields are once again becoming a key risk factor for the stock market."

Excessively High Market Concentration: Stifel equity market strategist Thomas Carroll reminded that currently, "stock concentration is at its highest level in 40 years, and dispersion has reached a peak." Once the AI craze cools down or capital flows out of large tech stocks to lock in profits, the broader market will face significant volatility risks.

U.S. Midterm Elections: The second half of the year will welcome the U.S. midterm elections. The policy games and the direction of fiscal budgets before and after the elections will act as uncontrollable macro variables, significantly elevating market sentiment volatility.

Summary

The U.S. stock market in the second half of 2026 is destined to be a continuous tug-of-war between an AI earnings carnival and macro inflation risks. Supported by strong corporate fundamentals, the S&P 500 index is expected to continue climbing higher; however, in the process of charging toward the 8,000-point mark or even higher peaks, investors should maintain a sharp awareness of inflation rebounds, high concentration risks, and potential technical corrections.