A Wall Street analyst has outlined the chances of the S&P 500 climbing to 9,000 by 2026, amid ongoing debate over whether the artificial intelligence (AI) boom is fueling a lasting rally or an emerging bubble.Notably, the benchmark index has notched multiple record highs in 2025, led by technology stocks. At press time, the S&P 500 stood at 6,664, up nearly 15% year-to-date.S&P 500 YTD price chart. Source: Google FinanceRegarding the future outlook, Evercore ISI strategist Julian Emanuel sees only a 25% pro ...